HomeMy WebLinkAboutReso 31-1993RESOLUTION NO. 31-93
CITY COUNCIL, CITY OF SOUTH SAN FRANCISCO, STATE OF CALIFORNIA
A RESOLUTION ADOPTING WATER EFFICIENT
LANDSCAPING AND IRRIGATION GUIDELINES
WHEREAS, water is a limited commodity in California; and
WHEREAS, years of drought have proven that conservation is an
effective and efficient method of insuring future generations
enough water for general use; and
WHEREAS, the amount of water used to irrigate landscaped areas
may be reduced by the type of planting and efficient design of
irrigation systems; and
WHEREAS, the State Legislature adopted the Water Conservation
in Landscaping Act (Government Code §65590); and
WHEREAS, the City Council has considered the provisions of the
State's Model Ordinance in adopting the attached guidelines.
NOW, THEREFORE, the City Council of South San Francisco
resolves as follows:
1. APPLICABILITY AND EXCEPTIONS
These requirements apply to all public agency and private
developments that require a permit and that include a planted area
of more than 2,500 square feet of new and/or rehabilitated
landscapLng with the exception of:
ae
Ce
Single-family residences.
Homeowner-provided landscaping
residential projects.
Cemeteries.
Registered historical sites.
Ecological restoration projects.
Reclamation projects.
Parks.
Schools.
at multi-family
2. STANDARDS
A. GENERAL
1. Prior to the issuance of any permit by the City for
an applicable project, the property owner or his/her authorized
agent must receive the City's approval of landscaping and
irrigation plans that meet the following standards. The project's
landscaping must be installed and maintained in perpetuity in
conformance to these plans unless subsequent plans are approved by
the City. Said plans shall conform to the following general
requirements:
ae
Planting, Irrigation and Grading plans shall be
shown on separate sheets.
be
Planting, Irrigation and Grading Plans shall be
numbered and dated.
Ce
Planting, Irrigation and Grading Plans shall be
drawn to the same scale and format.
de
Existing conditions, planting, property boundaries,
existing and proposed buildings, structures and
other site improvements etc. shall be noted on each
sheet.
2. Applicable zoning requirements shall be met.
3. Applicable Design Review Board requirements shall be met.
4. A professional who is licensed by the State of California
to prepare such plans has stamped, signed and dated the drawings.
B. IRRIGATION
1. Irrigation schedule shall be included on drawings.
2. The following information shall be shown
irrigation plan:
on the
a. irrigation system point of connection.
b. water service pressure at point of connection.
c. water meter size.
d. backflow prevention device(s).
ee
major components of the irrigation system indicated
by symbol in plan and explained with manufacturers
name and model number and size on a legend.
fo
total precipitation rate shown in inches per hour
for each valve circuit using overhead irrigation.
total flow rate and operating pressure for each
irrigation circuit.
3. A pressure regulation valve shall be required where water
pressure exceeds 80 psi.
2
4. An automatic controller will repeat start times and
multiple program potential shall be specified.
5. Precipitation rates shall not exceed .85 inches per hour
on slopes exceeding 15%.
6. Check valves shall be included where low-head drainage
will occar due to elevation differences.
7. Separate irrigation circuits shall be included for each
type of planting area (turf must be on a separate valve).
8. Point application or subsurface irrigation systems shall
be used where appropriate.
9. Ail irrigation systems shall be designed to avoid runoff,
overspray or other similar conditions where water flows onto
adjacent property, non-irrigated areas, walks, roadways or
structures.
C. PL~NTING
shown:
The quantities and percentage of the following shall be
ae
total lot area.
planted area.
turf area.
area of high water use plants.
2. A legend shall be shown which summarizes botanical names,
common names and sizes of all plant materials.
3. Existing trees and other plant materials to be removed or
retained shall be identified and noted.
4. The combined area of turf shall not exceed 33% of the
entire pkanted area.
5. Where turf is proposed, Tall Fescue or another variety
with low water use shall be specified.
6. Higher water use plants shall not exceed 10% of the
planted area not including the turf area.
use.
The remaining plants shall be recognized as low water
General references include EBMUD's Water-Covering Plants
and Landscapes for the Bay Area and Bob Perry's Trees and
Shrubs for Dry California Landscapes. The city landscape
specialist may approve plants at his or her discretion.
8. A soil fertility report indicating the soil type,
composition and approximate infiltration rate shall be submitted
with the construction documents. The designer shall be responsible
for adjusting the plant selection and irrigation schedule in
accordance with the findings of the report.
9. A minimum of 2 inch layer of mulch shall be specified on
the drawings, except in areas intended for turf or hydroseeding
(not including the straw mulch typically included with the
hydroseeding procedure) and on slopes of ten percent or greater.
3. PROCEDURE
1. The City will provide the public with copies of the
guidelines at both the Planning Division and Building Inspection
Division.
2. The staff Landscape Architect will check the plans and
soils report according to the guidelines previous to submittal to
the design review board and subsequently at construction document
plan review.
3. The project Landscape Architect shall be required to
submit a certificate attesting that construction observation has
been performed and the installation substantially conforms to the
approved set of construction documents.
4. The staff Landscape Architect will perform a final
inspection after receipt of the certificate and sign-off on the
project if the installation is substantially in conformance with
the approved set of construction documents.
4. EFFECTIVE DATE
This Resolution shall take effect concurrently with Ordinance
No. 1127-93.
5. EXH2BITS
See attached.
4
I hereby certify that the foregoing Resolution was regularly
introduced and adopted by the City Council of the City of South San
Francisco at a regular meeting held on the 24th day of
M~rch , 1993 by the following vote:
AYES:
Councilmembers Jack Drago, Joseph A. Fernekes, John R. Penna,
Robert Yee, and Mayor Roberta Cerri Teglia
NOES: N0ne
ABSTAIN: None
ABSENT: None
ATTEST:
city
5
EXHIBITS TO RESOLUTION NO. 31-93
City of South San Francisco
Department of Economic and Community Development
Planning Division
WATER EFFICIENT
LANDSCAPING AND IRRIGATION
CHECKLIST
Project Acdress
Project Type
Owner
Responsible
Professior al
address
phone
fax
License No.
Other Design
Professio-~al
address
phone
fax
A. APPLICABILITY
ao
new landscaping
rehabilitated landscaping
NOT in one of the following categories
Single-family residences
Homeowner-provided landscaping at multi-family residential projects
Cemeteries
Registered historical sites
Ecological restoration projects
Reclamation projects
Parks
Schools
Project has a planted area of more than 2,500 square feet
Be
GENERAL
1. Planting, Irrigation, and Grading plans are on separate sheets.
2. Planting, Irrigation and Grading plans are numbered and dated.
o
Planting, Irrigation and Grading plans are drawn to the same scale
and format.
A licensed profcssional has stampcd, signed and datcd thc plans
pursuant to the appropriate statc laws.
o
Existing conditions, planting, property boundaries, existing and
proposed buildings, structures and other site improvements etc. are
noted on each sheet.
6. Zoning requirements are met when applicable.
7. Design Review Board requirements are met when applicable.
C. IR2IGATION
Irrigation schedule is included on drawings (showing establishment
period separately).
2. The following information is shown on the irrigation plan:
ao
irrigation system point of connection.
water service pressure at point of connection.
water meter size.
backflow prevention device(s).
major components of the irrigation system indicated by
symbol in plan and explained with manufacturers name and
model number and size on a legend.
total precipitation rate shown in inches per hour for each
valve circuit using over-head irrigation.
total flow rate and operating pressure for each irrigation
circuit.
3. Pressure regulation valve is required where water pressure exceeds 80
psi.
Automatic controller with repeat start times and multiple program
potential is specified.
5. Automatic rain shut off unit(s) is specified ~vith cach eontrollcr.
o
Precipitation rates do not exceed .85 inches per hour on slopes
exceeding 15%.
Check valves are included where low-head drainage will occur due to
elevation differences.
o
Separate irrigation circuits are included for each type of planting area
(turf must be on a separate valve).
Point application or subsurface irrigation systems are used where
appropriate.
10.
Mcdian strips and parking islands less than eight fe~t ~vide have no
overhead irrigation. All irrigation systems are designed to avoid
runoff, overspray or other similar conditions where water flows onto
adjacent property, non-irrigated areas, walks, roadways or structures.
11. A scparatc meter has been provided for irrigation only.
2
D. PLANTING
1. The quantities and percentages of the following are shown:
o
o
o
o
a. total lot area
b. planted area
c. turf area
d. area of high water use plants
A legend is shown which summarizes botanical names, common
names and sizes of all plant materials.
Existing trees and other plant materials to be removed or retained
are identified and noted.
The combined area of turf does not exceed 33% of the entire planted
area.
Where turf is proposed, Tall Fescue or another variety with low water
use is specified.
Higher water use plants do not exceed 10% of the planted area not
including the turf area.
The remaining plants are recognized as low water use.
A soils laboratory rcport is included on thc drasving and soil
amcndments arc specified as delineated in the rcport. A soil fertility
report indication the soil type, composition and approximate
infiltration rate are included with the construction documents. The
designer is responsible for adjusting the plant selection and irrigation
schedule in accordance with the findings of the report.
A minimum of 2 inch layer of mulch has been specified on the
drawings except in areas intended for turf or hydroseeding (not
including the straw mulch typically included with the hydroseeding
procedure) and on slopes of ten percent or greater.
THIS IS THE STATE'S MODEL ORDINANCE
IT IS P~AESENTED TO THE COUNCIL FOR CONSIDERATION
AS REQUIRED BY STATE LAW PRIOR TO ACTION ON THE
CITY'S GUIDELINES
MODEL
WATER EFFICIENT
LANDSCAPE
ORDINANCE
In Division
Sections
TEXT OF PROPOSED REGULATIONS
Title 23, California Code of Regulations, add Chapter 2.7,
0 through 495, inclusive to read as follows:
Chapter
490. Purp(
2
.7. Model Water Efficient Landscape Ordinance.
Page
INDEX
,se 4
491. Defiritions
5
492. Provi
a.
b.
C.
;ions for New or Rehabilitated Landscapes 11
Applicability 1 1
Landscape Documentation Package 1 2
Elements of the Landscape Documentation Package 13
1. Sample Water Conservation Concept Statement 1 4
2. Maximum Applied Water Allowance 1 6
3. Estimated Applied Water Use 1 7
4. Estimated Total Water Use 1 7
5. Landscape Design Plan 1 8
(A) Plant Selection and Grouping 1 8
(B) Water Features 18
(C) Landscape Design Plan Specifications 19
6. Irrigation Design Plan 1 9
(A) Irrigation Design Criteria 20
(B) Recycled Water 21
(C) Irrigation Design Plan Specifications 22
7. Irrigation Schedules 23
8. Maintenance Schedules 24
9. Landscape Irrigation Audit Schedules 24
10. Grading Design Plan 24
11. Soils 25
12. Certification 26
Sample Cert. of Substantial Completion 27
Public Education 29
do
6/15/92
MODEL
WATER EFFICIENT
LANDSCAPE
ORDINANCE
3
493. Provisions for Existing Landscapes
a. Water Management
b. Water Waste Prevention
3O
3O
3O
494.
Effective Precipitation
Sample Effective Precipitation Disclosure Statement
31
32
495. Reference Evapotranspiration Rates
33
4
490. Purpose.
(a) The State Legislature has found:
(1) that the limited supply of state waters are subject to ever
increasing demands;
(2) that California's economic prosperity depends on adequate
supplies of water;
(3) that state policy promotes conservation and efficient use
of water;
(4) that landscapes provide recreation areas, clean the air and
water, prevent erosion, offer fire protection, and replace
ecosystems displaced by development; and
(5) that landscape design, installation, and maintenance can
and should be water efficient.
(b) Consistent with the legislative findings, the purpose of this
model ordinance is to:
(1) promote the values and benefits of landscapes while
recognizing the need to invest water and other resources as
efficiently as possible;
(2) establish a structure for designing, installing, and
maintaining water efficient landscapes in new projects; and
(3) establish provisions for water management practices and
water waste prevention for established landscapes.
Note: Authority cited: Sections 65591.5, 65594, Gov. Code. Reference:
Sections 65591, 65591.5, 65597, Gov. Code.
491. Definitions.
The words used in this ordinance have the meaning set forth below:
(a) "anti-drain valve" or "check valve" means a valve located
unde' a sprinkler head to hold water in the system so it minimizes
drainage from the lower elevation sprinkler heads.
(b) "application rate" means the depth of water applied to a
given area, usually measured in inches per hour.
(c) "applied water" means the portion of water supplied by the
irrigation system to the landscape.
(d) "automatic controller" means a mechanical or solid state
timer, capable of operating valve stations to set the days and length
of time of a water application.
(e) "backflow prevention device" means a safety device used to
prewgnt pollution or contamination of the water supply due to the
reve'se flow of water from the irrigation system.
(f) "conversion factor (0.62)" means a number that converts the
max'mum applied water allowance from acre-inches per acre per
year to gallons per square foot per year. The conversion factor is
calcJlated as follows:
(325,851 gallons/ 43,560 square feet)/12 inches =
325,851 gallons = one acre foot
43,560 square feet = one acre
12 inches = one foot
(0.62)
To convert gallons per year to l O0-cubic-feet per year, another
corrmon billing unit for water, divide gallons per year by 748. (748
gallons = 100 cubic feet.)
6
(g) "ecological restoration project" means a project where the
site is intentionally altered to establish a defined, indigenous,
historic ecosystem.
(h) "effective precipitation" or "usable rainfall" means the
portion of total precipitation that is used by the plants.
Precipitation is not a reliable source of water, but can contribute to
some degree toward the water needs of the landscape.
(i) "emitter" means drip irrigation fittings that deliver water
slowly from the system to the soil.
(j) "established landscape" means the point at which plants in
the landscape have developed roots into the soil adjacent to the root
ball.
(k) "establishment period" means the first year after installing
the plant in the landscape.
(I) "Estimated Applied Water Use" means the portion of the
Estimated Total Water Use that is derived from applied water. The
Estimated Applied Water Use shall not exceed the Maximum Applied
Water Allowance. The Estimated Applied Water Use may be the sum
of the water recommended through the irrigation schedule, as
referenced in Section 492 (c) (3).
(m) "Estimated Total Water Use" means the annual total
amount of water estimated to be needed to keep the plants in the
landscaped area healthy. It is based upon such factors as the local
evapotranspiration rate, the size of the landscaped area, the types
of plants, and the efficiency of the irrigation system, as described
in Section 492 (c) (4).
(n) "ET adjustment factor" means a factor of 0.8, that, when
applied to reference evapotranspiration, adjusts for plant factors
and irrigation efficiency, two major influences upon the amount of
water that needs to be applied to the landscape.
7
A combined plant mix with a site-wide average of 0.5 is the basis of
the plant factor portion of this calculation. The irrigation
efficiency for purposes of the ET Adjustment Factor is 0.625.
There'ore, the ET Adjustment Factor (0.8) = (0.5/0.625).
(o) "evapotranspiration" means the quantity of water evaporated
from adjacent soil surfaces and transpired by plants during a
specific time.
(p) "flow rate" means the rate at which water flows through
pipes and valves (gallons per minute or cubic feet per second).
(q) "hydrozone" means a portion of the landscaped area having
plants with similar water needs that are served by a valve or set of
valves with the same schedule. A hydrozone may be irrigated or non-
irrigated. For example, a naturalized area planted with native
vegetation that will not need supplemental irrigation once
estab ished is a non-irrigated hydrozone.
(r) "infiltration rate" means the rate of water entry into the soil
expressed as a depth of water per unit of time (inches per hour).
(s) "irrigation efficiency" means the measurement of the
amotnt of water beneficially used divided by the amount of water
applied. Irrigation efficiency is derived from measurements and
estimates of irrigation system characteristics and management
practices. The minimum irrigation efficiency for purposes of this
ordinance is 0.625. Greater irrigation efficiency can be expected
from well designed and maintained systems.
(t) "landscape irrigation audit" means a process to perform
site inspections, evaluate irrigation systems, and develop efficient
irrigztion schedules.
8
(u) "landscaped area" means the entire parcel less the building
footprint, driveways, non-irrigated portions of parking lots,
hardscapes- such as decks and patios, and other non-porous areas.
Water features are included in the calculation of the landscaped
area. Areas dedicated to edible plants, such as orchards or
vegetable gardens are not included.
(v) "lateral line" means the water delivery pipeline that supplies
water to the emitters or sprinklers from the valve.
(w) "main line" means the pressurized pipeline that delivers
water from the water source to the valve or outlet.
(x) "Maximum Applied Water Allowance" means, for design
purposes, the upper limit of annual applied water for the established
landscaped area as specified in Section 492 (c) (2). It is based upon
the area's reference evapotranspi.ration, the ET Adjustment Factor,
and the size of the landscaped area. The Estimated Applied Water
Use shall not exceed the Maximum Applied Water Allowance.
(y) "mined-land reclamation projects" means any surface
mining operation with a reclamation plan approved in accordance
with the Surface Mining and Reclamation Act of 1975.
(z) "mulch" means any material such as leaves, bark, straw or
other materials left loose and applied to the soil surface for the
beneficial purpose of reducing evaporation
(aa) "operating pressure" means the pressure at which a system
of sprinklers is designed to operate, usually indicated at the base of
a sprinkler.
(bb) "overhead sprinkler irrigation systems" means those
with high flow rates (pop-ups, impulse sprinklers, rotors, etc.)
(cc) "overspray" means the water which is delivered beyond the
landscaped area, wetting pavements, walks, structures, or other non-
landscaped areas.
9
(dd) "plant factor" means a factor that when multiplied by
reference evapotranspiration, estimates the amount of water used
by pl~,nts. For purposes of this ordinance, the average plant factor
of Iow water using plants ranges from 0 to 0.3, for average water
using plants the range is 0.4 to 0.6, and for high water using plants
the r&nge is 0.7 to 1.0.
(ee) "rain sensing device" means a system which automatically
shuts off the irrigation system when it rains.
(ff) "record drawing" or "as-builts" means a set of
reproducible drawings which show significant changes in the work
made during construction and which are usually based on drawings
marked up in the field and other data furnished by the contractor.
(gg) "recreational area" means areas of active play or
recreation such as sports fields, school yards, picnic grounds, or
other areas with intense foot traffic.
(hh) "recycled water," "reclaimed water," or "treated
sewa, ge effluent water" means treated or recycled waste water
of a quality suitable for nonpotable uses such as landscape
irrigation; not intended for human consumption.
(ii) "reference evapotranspiration" or "ETo" means a standard
measurement of environmental parameters which affect the water
use of plants. ETo is given in inches per day, month, or year as
represented in Section 495, and is an estimate of the
evapotranspiration of a large field of four- to seven-inch tall, cool-
season grass that is well watered. Reference evapotranspiration is
usec as the basis of determining the Maximum Applied Water
Allowances so that regional differences in climate can be
accommodated.
(jj) "rehabilitated landscape" means any relandscaping project
that requires a permit.
10
(kk) "run off" means water which is not absorbed by the soil or
landscape to which it is applied and flows from the area, For
example, run off may result from water that is applied at too great a
rate (application rate exceeds infiltration rate) or when there is a
severe slope.
(11) "soil moisture sensing device" means a device that
measures the amount of water in the soil.
(mm) "soil texture" means the classification of soil based on the
percentage of sand, silt, and clay in the soil.
(nn) "sprinkler head" means a device which sprays water through
a nozzle.
(oo) "static water pressure" means the pipeline or municipal
water supply pressure when water is not flowing.
(pp) "station" means an area served by one valve or by a set of
valves that operate simultaneously.
(qq) "turf" means a surface layer of earth containing mowed grass
with its roots. Annual bluegrass, Kentucky bluegrass, Perennial
ryegrass, Red fescue, and Tall fescue are cool-season grasses.
Bermudagrass, Kikuyugrass, Seashore paspalum, St. Augustinegrass,
Zoysiagrass, and Buffalo grass are warm-season grasses.
(rr) "valve" means a device used to control the flow of water in
the irrigation system.
(ss) "water' conservation concept statement" means a one-
page checklist and a narrative summary of the project as shown in
Section 492 (c) (1).
Note: Section 65594, Gov. Code. Reference: Section 65597, Gov. Code,
492. Provisions for New or Rehabilitated Landscapes
(a) Applicability
(1) Except as provided in Section 492 (a) (3), this section shall
apply to:
(A) all new and rehabilitated landscaping for public agency
projects and private development projects that require a
permit; and
(B) developer-installed landscaping in single-family and multi-
family projects.
(2) =rojects subject to this section shall conform to the provisions
in Section 492.
(3) This section shall not apply to:
(A) homeowner-provided landscaping at single-family and
multi-family projects;
(B) cemeteries;
(C) registered historical sites;
(D) ecological restoration projects that do not require a
permanent irrigation system;
(E) mined-land reclamation projects that do not require a
permanent irrigation system; or
(F) any project with a landscaped area less than 2,500 square
feet.
12
(b) Landscape Documentation Package
(1) A copy of the landscape documentation package conforming to
this chapter shall be submitted to the city or county. No permit shall be
issued until the city or county reviews and approves the landscape
documentation package.
(2) A copy of the approved landscape documentation package shall
be provided to the property owner or site manager along with the record
drawings and any other information normally forwarded to the property
owner or site manager.
(3) A copy of the Water Conservation Concept Statement and the
Certificate of Substantial Completion shall be sent by the project
manager to the local retail water purveyor.
(4) Each landscape documentation package shall include the
following elements, which are described in Section 492 (c):
(A) Water Conservation Concept Statement
(B) Calculation of the Maximum Applied Water Allowance
(C) Calculation of the Estimated Applied Water Use
(D) Calculation of the Estimated Total Water Use
(E) Landscape Design Plan
(F) Irrigation Design Plan
(G) Irrigation Schedules
(H) Maintenance Schedule
(I) Landscape Irrigation Audit Schedule
(J) Grading Design Plan
(K) Soil Analysis
(L) Certificate of Substantial Completion.
after installation of the project.)
(To be submitted
(5) If effective precipitation is included in the calculation of the
Estimated Total Water Use, then an Effective Precipitation Disclosure
Statement from the landscape professional and the property owner shall
be submitted with the Landscape Documentation Package.
(c) Elements of Landscape Documentation Package
(1) Water Conservation Concept Statement
Each landscape documentation package shall include a cover sheet,
referred to as the Water Conservation Concept Statement similar to the
following example. It serves as a check list to verify that the elements of
the landsca3e documentation package have been completed and has a
narrative s Jmmary of the project.
14
Sample Water Conservation Concept Statement
Project Site: Project Number:
Project Location:
Landscape Architect/ Irrigation Designer/ Contractor:
Included in this project submittal package are:
(Check to indicate completion)
Maximum Applied Water Allowance:
gallons or cubic feet/year
Estimated Applied Water Use:
gallons or cubic feet/year
*_ 2.(a) Estimated Amount of Water
Effective Precipitation' ___-_gallons
Expected from
or cubic feet/year
o
Estimated Total Water Use:
gallons or cubic feet/year
Note: * If the design assumes that a part of the Estimated Total
Water Use will be provided by precipitation, the Effective
Precipitation Disclosure Statement in Section 494 shall be
completed and submitted.
5.
6.
7.
8.
9.
10.
Landscape Design Plan
Irrigation Design Plan
Irrigation Schedules
Maintenance Schedule
Landscape Irrigation Audit Schedule
Grading Design Plan
Soil Analysis
(Sample Water Conservation Concept Statement, continued)
Descriptio ~ of Project
(Briefly describe the planning and design actions that are intended to
achieve conservation and efficiency in water use.)
Date: Prepared By:
16
(2) The Maximum Applied Water Allowance
(A) A project's Maximum Applied Water Allowance shall be
calculated using the following formula:
MAWA
= (ETo) (0.8) (LA) (0.62) where:
MAWA
ETo
0.8
LA
0.62
= Maximum Applied Water Allowance (gallons per year)
= Reference Evapotranspiration (inches per year)
= ET Adjustment Factor
= Landscaped Area (square feet)
= conversion factor (to gallons per square foot)
(B) Two example calculations of the Maximum ApPlied Water
Allowance are:
(i) PROJECT SITE ONE: Landscaped area of 50,000 sq. ft. in Fresno
MAWA : (ETo) (.8) (LA) (.62)
= (51 inches) (.8) (50,000 square feet) (.62)
Maximum Applied Water Allowance = 1,264,800 gallons per year
(or 1,691 hundred-cubic-feet per year: 1,264,800/748=1,691)
(ii) PROJECT SITE TWO: Landscaped area of 50,000 sq. ft. in San
Francisco
MAWA = (ETo) (.8)(LA) (.62)
= (35 inches) (.8) (50,000 square feet) (.62)
Maximum Applied Water Allowance = 868,000 gallons per year
(or 1,160 hundred-cubic-feet per year)
(C) Portions. of landscaped areas in public and private projects such
as parks, playgrounds, sports fields, golf courses, or school yards
where turf provides a playing surface or serves other recreational
purposes are considered recreational areas and may require water in
addition to the Maximum Applied Water Allowance. A statement
shall be included with the landscape design plan, designating
recreational areas to be used for such purposes and specifying any
needed amount of additional water above the Maximum Applied Water
Allowance.
(3) Estimated Applied Water Use
(A) The Estimated Applied Water Use shall not exceed the Maximum
Applied Water Allowance.
(B) A calculation of the Estimated Applied Water Use shall be
submitted with the Landscape Documentation Package. It may be
calculated by summing the amount of water recommended in the
irrigation schedule.
(4) Estimated Total Water Use
(A) A calculation of the Estimated Total Water Use shall be
subm tted with the Landscape Documentation Package. The
Estimated Total Water Use may be calculated by summing the
amount of water recommended in the irrigation schedule and adding
any amount of water expected from effective precipitation (not to
exceed 25 percent of the local annual mean precipitation) or may be
calculated from a formula such as the following:
The Estimated Total Water Use for the entire landscaped area equals
the sum of the Estimated Water Use of all hydrozones in that
landscaped area.
EWU (hydrozone) = (ETo) (PF) (HA) (.62)
(IE)
EWU (hydrozone) =
ETo =
PF =
HA =
(.62~ =
IE =
Estimated Water .Use (gallons per year)
Reference Evapotranspiration (inches per year)
plant factor
hydrozone area (square feet)
conversion factor
irrigation efficiency
18
(B) If the Estimated Total Water Use is greater than the
Estimated Applied Water Use due to precipitation being
included as a source of water, an Effective Precipitation
Disclosure Statement such as the one in Section 494 shall be
included in the Landscape Documentation Package.
(5) Landscape Design Plan
A landscape design plan meeting the following requirements shall be
submitted as part of the landscape documentation package.
(A) Plant Selection and Grouping
(i) Any plants may be used in the landscape, providing the
Estimated Applied Water Use recommended does not exceed the
Maximum Applied Water Allowance and that the plants meet
the specifications set forth in (ii), (iii) and (iv).
(ii) Plants having similar water use shall be grouped together
in distinct hydrozones,
(iii) Plants shall be selected appropriately based upon their
adaptability to the climatic, geologic, and topographical
conditions of the site. Protection and preservation of native
species and natural areas is encouraged. The planting of trees
is encouraged wherever it is consistent with the other
provisions of this ordinance.
(iv) Fire prevention needs shall be addressed in areas that are
fire prone. Information about fire prone areas and appropriate
landscaping for fire safety is available from local fire
departments or the California Department of Forestry.
(s)
Water Features
(i) Recirculating water shall be used for decorative water
features.
(ii) Pool and spa covers are encouraged.
(C) Landscape Design Plan Specifications
The landscape design plan shall be drawn on project base sheets at a
scale that accurately and clearly identifies:
(i) Designation of hydrozones.
(ii) Landscape materials, trees, shrubs, groundcover, turf, and other
vegetation. Planting symbols shall be clearly drawn and plants
labeled by botanical name, common name, container size, spacing,
and quantities of each group of plants indicated.
(iii):)roperty lines and street names.
(iv) Streets, driveways, walkways, and other paved areas.
(v) Pools, ponds, water features, fences, and retaining walls.
(vi) Existing and proposed buildings and structures including
elevation if applicable.
(vii) Natural features including but not limited to rock
outcroppings, existing trees, shrubs that will remain.
(viii) Tree staking, plant installation, soil preparation detailsl and
any other applicable planting and installation details.
(ix) A calculation of the total landscaped area.
(x) Designation of recreational areas.
(6) Irrigation Design Plan
An i'rigation design plan meeting the following conditions shall be
submitted as part of the Landscape Documentation Package,
20
(A) Irrigation Design Criteria
(i) Runoff and Overspray. Soil types and infiltration rate shall
be considered when designing irrigation systems. All irrigation
systems shall be designed to avoid runoff, Iow head drainage,
overspray, or other similar conditions where water flows onto
adjacent property, non-irrigated areas, walks, roadways, or
structures. Proper irrigation equipment and schedules, including
features such as repeat cycles, shall be used to closely match
application rates to infiltration rates therefore minimizing runoff.
Special attention shall be given to avoid runoff on slopes and to
avoid overspray in planting areas with a width less than ten feet,
and in median strips.
No overhead sprinkler irrigation Systems shall be installed in
median strips less than ten feet wide.
(ii) Irrigation Efficiency. For the purpose of determining the
maximum applied water allowance, irrigation efficiency is assumed
to be 0.625. Irrigation systems shall be designed, maintained, and
managed to meet or exceed 0.625 efficiency.
(i ii) Equipment.
Water meters. Separate landscape water meters shall be
installed for all projects except for single family homes or
any project with a landscaped area of less than 5,000 square
feet.
Controllers. Automatic control systems shall be required for
all irrigation systems and must be able to accommodate all
aspects of the design.
21
Valves. Plants which require different amounts of water
shall be irrigated by separate valves. If one valve is used for a
given area, only plants with similar water use shall be used in
that area, Anti-drain (check) valves shall be installed in
strategic points to minimize or prevent Iow-head drainage,
Sprinkler heads. Heads and emitters shall have consistent
application rates within each control valve circuit. Sprinkler
heads shall be selected for proper area. coverage, application
rate, operating pressure, adjustment capability, and ease of
maintenance.
Rain Sensing Override Devices. Rain sensing override
devices shall be required on all irrigation systems.
Soil Moisture Sensing Devices. It is recommended that
soil moisture sensing devices be considered where appropriate.
(El) Recycled Water
(i) The installation of recycled water irrigation systems (dual
distribution systems) shall be required to allow for the current and
future use of recycled water, unless a written exemption has been
grafted as described in the following section (B) (ii).
(ii) Irrigation systems shall make use of recycled water unless a
written exemption has been granted by the local water agency,
stat'ng that recycled water meeting all health standards is not
ava'lable and will not be available in the foreseeable future.
(iii) The recycled water irrigation systems shall be designed and
operated in accordance with all local and state codes.
22
(C) Irrigation Design Plan Specifications
Irrigation systems shall be designed to be consistent with
hydrozones.
The irrigation design plan shall be drawn on project base sheets. It
shall be separate from, but use the same format as, the landscape design
plan. The scale shall b® the same as that used for the landscape design
plan described in Section 492 (c) (5) (C).
The irrigation design plan shall accurately and clearly identify:
(i) Location and size of separate water meters for the landscape.
(ii) Location, type, and size of all components of the irrigation
system, including automatic controllers, main and lateral lines,
valves, sprinkler heads, moisture sensing devices, rain switches,
quick couplers, and backflow prevention devices.
(iii) Static water pressure at the point of connection to the public
water supply.
(iv) Flow rate (gallons per minute), application rate (inches per
hour), and design operating pressure (psi) for each station.
(v) Recycled water irrigation systems as specified in the Section
492 (c) (4) (B).
23
(7) Irrigation Schedules
Irrigation schedules satisfying the following conditions shall be
submitted as part of the Landscape Documentation Package.
(A) An annual irrigation program with monthly irrigation schedules
shall be required for the plant establishment period, for the established
landscape, and for any temporarily irrigated areas.
(B) -he irrigation schedule shall:
(i) include run time (in minutes per cycle), suggested number
of cycles per day, and frequency of irrigation for each station;
and
(ii) provide the amount of applied water (in hundred cubic
feet, gallons, or in whatever billing units the local water
supplier uses) recommended on a monthly and annual basis.
(C) The total amount of water for the project shall include water
designated in the Estimated Total Water Use calculation plus water
needed for any water features, which shall be considered as a high water
using hydrozone.
(D) Recreational areas designated in the landscape design plan shall
be highlighted and the irrigation schedule shall indicate if any additional
water is needed above the Maximum Applied Water Allowance because of
high plant factors (but not due to irrigation inefficiency.)
(E) Whenever possible, irrigation scheduling shall incorporate the
use of evapotranspiration data such as those from the California
Irrigation Management Information System (CIMIS) weather stations to
apply the appropriate levels of water for different climates.
(F) Whenever possible, landscape irrigation shall be scheduled
between 2:00 a.m. and 10:00 a.m. to avoid irrigating during times of high
wind or h gh temperature.
24
(8) Maintenance Schedules
A regular maintenance schedule satisfying the follOwing conditions
shall be submitted as part of the Landscape Documentation Package:
(A) Landscapes shall be maintained to ensure water efficiency. A
regular maintenance schedule shall include but not be limited to checking,
adjusting, and repairing irrigation equipment; resetting the automatic
controller; aerating and dethatching turf areas; replenishing mulch;
fertilizing; pruning, and weeding in all landscaped areas.
(B) Whenever possible, repair of irrigation equipment shall be done
with the originally specified materials or their equivalents.
(9) Landscape Irrigation Audit Schedules
A schedule of landscape irrigation audits, for all but single family
residences, satisfying the following conditions shall be submitted to the
city or county as part of the Landscape Documentation Package.
(A) At a minimum, audits shall be in accordance with the State of
California Landscape Water Management Program as described in the
Landscape Irrigation Auditor Handbook, the entire document, which is
hereby incorporated by reference. (See Landscape Irrigation Auditor
Handbook (June 1990) version 5.5 [formerly Master Auditor Training].)
(B) The schedule shall provide for landscape irrigation audits to be
conducted by certified landscape irrigation auditors at least once every
five years.
(10) Grading Design Plan
Grading design plans satisfying the following conditions shall be
submitted as part of the Landscape Documentation Package.
(A) A grading design plan shall be drawn on project base sheets.
shall be separate from but use the same format as the landscape design
plan.
It
-- 25
(B) The grading design plan shall indicate finished configurations
and elevations of the landscaped area, including the height of graded
slopes, drai3age patterns, pad elevations, and finish grade.
(11) Soils
(A) A soil analysis satisfying the following conditions shall be
submitted as part of the Landscape Documentation Package.
(i) Determination of soil texture, indicating the percentage of
organic matter.
(ii) An approximate soil infiltration rate (either measured or
derived from soil texture/infiltration rate tables.) A range of
infiltr~.tion rates shall be noted where appropriate,
(iii) Measure of pH, and total soluble salts.
(B) A mulch of at least three inches shall be applied to all planting
areas except turf.
26
(12) Certification
(A) Upon completing the installation of the landscaping and the
irrigation system, an irrigation audit shall be conducted by a certified
landscape irrigation auditor prior to the final field observation. (See
Landscape Irrigation Auditor Handbook as referenced in Section
492 (c)(9)(A)).
(B) A licensed landscape architect or contractor, certified
irrigation designer, or other licensed or certified professional in a related
field shall conduct a final field observation and shall provide a certificate
of substantial completion to the city or county. The certificate shall
specifically indicate that plants were installed as specified, that the
irrigation system was installed as designed, and that an irrigation audit
has been performed, along with a list o~ any observed deficiencies.
(C) Certification shall be accomplished by completing a Certificate
of Substantial Completion and delivering it to the city or county, to the
retail water supplier, and to the Owner of Record. A sample of such a
form, which shall be provided by the city or county is:
27
SAMPLE CERTIFICATE OF SUBSTANTIAL COMPLETION
Project Site:
Project Lo:ation:
Project Number:
Preliminary
submittal)
1.
* 2a.
Effective
Project Documentation Submitted: (check indicating
Maximum Applied Water Allowance:
(gallons or cubic feet per year)
Estimated Applied Water Use:
(gallons or cubic feet/year)
Estimated Amount of Water Expected from
Precipitation: ..... (gallons or cubic feet/year)
3. Estimated Total Water Use:
(gallons or cubic feet/year)
Note: * If the design assumes that a.part of the Estimated Total Water
Use will be provided by precipitation, the Effective Precipitation
Disclosure Statement in Section 495 shall be completed and submitted.
The Estimated Amount of Water Expected from Effective Precipitation
shall not exceed 25 percent of the local annual mean precipitation
(average rainfall.)
4. Landscape Design Plan
5. Irrigation Design Plan
6. Irrigation Schedules
7. Maintenance Schedule
8. Landscape Irrigation Audit Schedule
9. Grading Design Plan
10. Soil Analysis
Post-Installation
completion)
A.
B.
Inspection: (Check indicating substantial
Plants installed as specified
Irrigation system installed as designed
dual distribution system for recycled water
minimal run off or overspray
Landscape Irrigation Audit performed
28
(Certificate of Substantial Completion, continued)
__Project submittal package and a copy of this certification has been
provided to owner/manager and local water agency
Comments:
I/we certify that work has been installed in accordance with the contract
documents.
Contractor
Signature Date State License Number
I/we certify that based upon periodic site observations, the work has been
substantially completed in accordance with the Water Efficient Landscape
Ordinance and that the landscape planting and irrigation installation
conform with the approved plans and specifications.
Landscape Architect Signature Date State License Number
or Irrigation Designer/Consultant
or Licensed or Certified Professional in a Related Field
I/we certify that I/we have received all of the contract documents and
that it is our responsibility to see that the project is maintained in
accordance with the contract documents.
Owner Signature Date
Note: Authority cited: Section 65594, Gov. Code. Reference: Section
65597, Gov. Code.
(d) Publ'c Education
(1) Publications.
(A) Local agencies shall provide information to owners of all new,
single family residential homes regarding the design, installation, and
maintenance of water efficient landscapes.
(B) I~formation about the efficient use of landscape water shall be
provided to water users throughout the community.
(2) Model Homes.
At least one model home that is landscaped in each project
consisting of eight or more homes shall demonstrate via signs and
information the principles of water efficient landscapes described in this
ordinance.
(A) Signs shall be used to identify the model as an example of a
water efficient landscape and featuring elements such as hydrozones,
irrigation equipment and others which contribute to the overall water
efficient theme.
(B) nformation shall be provided about designing, installing, and
maintaining water efficient landscapes.
Note: Authority cited: Section 65594, Gov. Code. Reference: Section
65597.
30
493. PROVISIONS FOR EXISTING LANDSCAPES.
(a) Water Management
All existing landscaped areas to which the city or county provides
water that are one acre or more, including golf courses, green belts,
common areas, multi-family housing, schools, businesses, parks,
cemeteries, and publicly owned landscapes shall have a landscape
irrigation audit at least every five years. At a minimum, the audit shall
be in accordance with the California Landscape Water Management
Program as described in the Landscape Irrigation Auditor Handbook, the
entire document which is hereby incorporated by reference. (See
Landscape Irrigation Auditor Handbook, Dept. of Water Resources, Water
Conservation Office (June 1990) version 5.5.)
(1) If the project's water bills indicate that they are using less
than or equal to the Maximum Applied Water Allowance for that project
site, an audit shall not be required.
(2) Recognition of projects that stay within the Maximum Applied
Water Allowance is encouraged.
(b) Water Waste Prevention
Cities and counties shall prevent water waste resulting from
inefficient landscape irrigation by prohibiting runoff, Iow head drainage,
overspray, or other similar conditions where water flows onto adjacent
property, non-irrigated areas, walks, roadways, or structures. Penalties
for violation of these prohibitions shall be established locally.
(Authority cited: Section 65594, Gov. Code. Reference: Section 65597,
Gov. Code.)
Section 494. Effective Precipitation
If effective precipitation is included in the calculation of the
Estimated Total Water Use, an Effective Precipitation Disclosure
Statement (similar to the following Sample Effective Precipitation
Disclosure Statement) shall be completed, signed, and submitted with the
Landscape ~)ocumentation Package. No more than 25 percent of the local
annual me;.n precipitation shall be considered effective precipitation in
the calculation of the Estimated Total Water Use.
32
SAMPLE EFFECTIVE PRECIPITATION DISCLOSURE STATEMENT
I certify that I have informed the project owner and developer that this
project depends on (gallons or cubic feet) of effective
precipitation per year. This represents percent of the local mean
precipitation of inches per year.
I have based my assumptions about the amount of precipitation that is
effective upon:
I certify that I have informed the project owner and developer that in
times of drought, there may not be enough water available to keep the
entire landscape alive.
Licensed or Certified Landscape Professional
I certify that I have been informed by the licensed or certified landscape
professional that this project depends upon (gallons or cubic feet)
of effective precipitation per year. This represents percent of
the local mean precipitation of inches per year.
I certify that I have been informed that in times of drought, there may not
be enough water available to keep the entire landscape alive.
Owner Developer
33
495.
REFERENCE EVAPOTRANSPIRATION
in inches (Historical Data, extrapolated from 12-Month Normal Year
ETo Maps and U.C. publication 21426)
County
Alamecla
Alpine
Amador
Butte
'Calaveras
Colusa
Contra Costa
Del None
Et Dorado
Fresno
Glenn
HumOo~dt
Imperial
Inyo
Kern
C~
Livermore
Oakland
N~ arkleeville
Jackson
Chico
Grk:lley
Croville
San Andreas
Colusa
W~tliams
Benicia
Brentwood
Courtland
Concord
~V ar~nez
Pittsburg
Crescent C;t~
Cammo
C lOveS
Coalinga
F;ve Points
Fresno
Fr,ant
Kerman
Kingsburg
Reedley
OCand
Willows
Eureka
Ferndale
Garoerv~lte
Hoopa
Brawley
Calipatna
Et Centro
Holtville
Yuma
Bishop
Death Valley
Independence
Lower Haiwee
Oas~s
Arvin
Bakersfield
Buttonwillow
13elano
Grapevine
China Lake
nyokern
sabela Dam
.pst Hills
Shafter
Taft
Tehachapi
Ann.
J~ Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dm Eto
1.2 1,5 2.9 4,4 5.9 6,6 7.4 6.4 5.3 3.2 1.5 0.9 47.2
1.5 1.5 2.8 3.9 5,1 5.3 6.0 5.5 4,8 3.1 1.4 0.9 41.8
0.7 0.9 2.0 3.5 5.0 6.1 7.3 6.4 4.4 2.6 1.2 0.5 40.5
1,2 1,5 2.8 4.4 6.0 7.2 7.9 7.2 5.3 3.2 1.4 0.9 48.9
1.2 1.8 2.9 4.7 6.1 7.4 8.5 7.3 5.4 3.7 1.7 1.0 51.7
1.2 1,8 3.0 4.7 6.1 7.7 8.5 7.1 5.4 3.7 1.7 1.0 51.9
1.2 1.7 2.8 4.7 6.1 7.6 8.5 7,3 5.3 3.7 1.7 1.0 51.5
1.2 1.5 2.8 4.4 6,0 7,3 7.9 7.0 5.3 3.2 1.4 0.7 48.8
1.1 1.7 2.8 4.8 6.6 7.4 8.2 7.0 5.7 3.5 1.7 1.0 51.4
1.2 1.7 2.9 4.5 6.1 7.2 8.5 7.3 5.3 3.4 1.6 1,0 50.8
1.3 1.4 2.7 3,8 4.9 5.0 6.4 5.5 4.4 2.9 1.2 0.7 40,3
1.0 1.5 2,9 4.5 6.1 7.1 7.9 6.7 5.2 3.2 1.4 0.7 48.3
0.9 1.5 2.9 4.4 6.1 6.9 7.9 6.7 5.3 3.2 1.4 0.7 48.0
1.1 1.4 2.4 4.0 5.5 5.9 7.0 6.0 4.8 3.2 1.3 0.7 43.4
1.2 1.4 2.4 3.9 5.3 5.6 6.7 5.6 4.7 3.1 1.2 0,7 41.8
1,0 1.5 2.8 4.1 5.6 6.4 7.4 6.4 5.0 3.2 1.3 0.7 45.4
0.5 0.9 2.0 3.0 3.7 3.5 4.3 3.7 3.0 2.0 0.9 0.5 27.7
0.9 1.7 2.5 3.9 5.9 7.2 7.8 6.8 5.1 3.1 1.5 0,9 473
1.0 1.5 3.2 4.8 5.4 7.7 8.5 7.3 5.3 3.4 1.4 0.7 51.4
1.2 1.7 3.1 4.6 6.2 7.2 8.5 7.3 5.3 3.4 1.6 0.7 50.9
0.9 1.7 3.3 5.0 6.6 7.7 8.5 7.3 5.4 3.4 1.5 0.9 52.1
0.9 1.7 3.3 4.8 6.7 7.8 8.4 7.1 5.2 3.2 1.4 0.6 51.1
1.2 1.5 3.1 4.7 6.4 7.7 8.5 7.3 5.3 3.4 1.4 0.7 51.3
0.9 1.5 3.2 4.8 6.6 7.7 8.4 7.2 5.3 3.4 1.4 0.7 51.2
1.0 1,5 3.4 4,8 6.6 7.7 8.4 7.2 5.3 3.4 1.4 0.7 51.5
1.1 1.5 3.2 4.7 6.4 7.7 8.5 7.3 5.3 3.4 1.4 0.7 51.3
1.2 1.7 3.1 4.8 6.7 7.4 8.8 7.3 5.8 3.8 1.7 1.1 53.3
1.2 1.7 2.9 4.7 6.1 7.2 8.5 7.3 5.3 3.6 1.7 1.0 51.3
0.5 1.1 2.0 3.0 3.7 3.7 3.7 3.7 3.0 2.0 0.9 0,5 27.5
0.5 1.1 2.0 3.0 3.7 3.7 3.7 3.7 3.0 2.0 0.9 0.5 27.5
0.6 1.2 2.2 3.1 4.5 5.0 5.5 4.9 3.8 2.4 1.0 0.7 34.9
0.5 1.1 2.1 3.0 4.4 5.4 6.1 5.1 3.8 2.4 0.9 0.7 35.6
2.8 3.8 5.9 8.0 10.4 11.5 11.7 10.0 8.4 6.2 3.5 2.1 84.2
2.9 3.9 6.1 8.3 10.5 11.8 12.0 10.4 8.6 6.5 3.8 2.3 86,9
2.7 3.5 5.6 7.9 10.1 11.1 11.6 9.5 8.3 6.1 3.3 2.0 81.7
2.8 3.8 5.9 7.9 10.4 11,6 12.0 10.0 8.6 6.2 3.5 2.1 84.7
3.1 4.1 6.6 8.7 11.0 12.4 12.7 11.0 8.9 6.6 4.0 2.6 91.5
1.7 2.7 4.8 6.7 8.2 10.9 7.4 9.6 7.4 4.8 2.5 1.6 68.3
2.2 3.3 5.4 7.7 9.8 11.111.410.1 8.3 5.4 2.9 1.7 79.1
1.7 2,7 3.4 6.6 8.5 9.5 9.8 8.5 7,1 3.9 2.0 1.5 65.2
1.8 2.7 4.4 7.1 8.5 9.5 9.8 8.5 7.1 4,2 2,6 1.5 67.6
2.7 2.8 5.9 8.010,411.711.610.0 8.4 6.2 3.4 2.1 83.1
1,2 1.8 3,5 4.7 6.6 7.4 8.1 7.3 5.3 3.4 1.7 1.0 51.9
1.0 1.8 3.5 4.7 6.6 7.7 8.5 7.3 5.3 3.5 1.6 0.9 52.4
1.0 1,8 3.2 4.7 6.6 7.7 8.5 7.3 5.4 3.4 1.5 0.9 52,0
0.9 1.8 3.4 4.7 6,6 7.7 8.5 7,3 5,4 3,4 1.4 0.7 52,0
1.3 1.8 3.1 4.4 5,6 6.8 7.6 6.8 5.9 3.4 1.9 1.0 49.5
2.1 3.2 5.3 7,7 9,2 10.0 11.0 9.8 7.3 4.9 2.7 1.7 74.8
2.0 3.1 4.9 7.3 8,5 9,7 11.0 9.4 7.1 5.1 2.6 1.7 72.4
1.2 1.4 2.8 4.4 5.8 7.3 7.9 7.0 5.0 3.2 1.7 0,9 48.4
0.6 1.1 2,6 4.4 7.0 7.7 8.5 7.1 5.0 3.9 0.8 0.4 49,0
1,0 1.7 3.4 5.0 6.6 7.7 8.3 7.3 5.4 3.4 1.5 0.9 52.1
1.3 1.8 3,1 4.3 6.2 7,3 8.5 7.3 5.4 3.4 1.7 1.0 51.2
t.4 1.8 3.2 5.0 6.1 7.7 7.9 7.3 5.9 3.4 2.1 1.2 52.9
34
Section 495 Continued
County
Kings
Lake
Lassen
Los Angeles
' ,Mad era
'Mann
'Mariposa
Mencacma
Merced
Mono
Monterey
Napa
Nevada
Orange
Placer
City
Corcoran
Hanford
Ketlleman City
Lemoore
Lakeport
Lower Lake
Ravendale
Susanvflle
Burbank
Glendora
Gorman
Lancaster
Los Angeles
Long Beach
Palmdale
Pasadena
Pearblossom
Redondo Beach
San Fernando
Chowcmila
Madera
Raymor'd
Novato
San Rafael
Coulterwile
Mariposa
Ann.
Jan ~b Mar Apr MW Jun Ju Aug Sep Oct Nov D~ Eto
0.9 1.5 3.3 5.2 7.2 7.9 8,4 7.3 5.8 3.4 1.4 0,7 53.1
0.9 1.5 3.4 5.0 6.6 7.7 8.3 7.2 5.4 3.4 1.4 0.7 51.5
1.0 1.8 3.4 5.3 7,2 7.9 8.4 7.4 5.9 3.7 1.7 1.054.6
0.9 1.5 3.4 5.0 6.6 7.7 8.3 7.3 5.4 3.4 1.4 0.7 51.7
1.1 1.3 2.6 3.5 5.1 6.0 7.3 6.1 4.7 2.9 1.2 0.9 42.8
1.2 1.4 2.7 4.5 5.3 6.3 7.4 6.4 5.0 3.1 1.3 0.945.4
0.6 1.1 2.3 4.1 5.6 6.7 7.9 7.3 4.7 2.8 1.2 0.5 44.9
0.7 1.0 2.2 4.1 5.6 65 7.$ 7.C 4.6 2.8 1.2 0.5 44.0
2.1 2.8 3.7 4.7 5.1 6.0 6.6 6.7 5.4 4,0 2.6 2.051.7
2.0 2.5 3.6 4.9 5.4 6.1 7,3 6.6 5.7 4.2 2.6 2.0 53.1
1.6 2.2 3.4 4.6 5.5 7.4 7.7 7.1 5.9 3.6 2.4 1.1 52.4
2.! 3.0 4.6 5.9 8.5 9.7 11.0 9.8 7.3 4.6 28 1.7 71.1
2.2 2.7 3.7 4.7 5.5 5.8 6.2 5.9 5.0 3.9 2.6 2.050.1
22 2.5 3.4 3.8 4.8 5.0 5.3 4.9 4.5 3.4 2.4 2.0 44.0
2.0 2.7 4.2 5.1 7.6 8.5 9.9 9.8 6.7 4.2 2.6 1.7 64.8
2.1 2.7 3.7 4.7 5.1 6.0 7.1 6.7 5.6 4.2 2.6 2.0 52.3
17 2.4 3.7 4.7 7.3 7.7 9.9 7.9 6.4 4.0 2.6 1.6 59.9
2.2 2.4 3.3 3.8 4.5 4.7 5.4 4.8 4.4 2.8 2.4 20 42.8
2.0 2.7 3.5 4.6 55 5.9 7.3 6.7 53 3,9 2.6 2.0 52.0
1.0 1.4 3.2 4.7 6.6 7.8 8,5 7.3 5.3 3.4l 1.4 0.7 51.4
~ 3.41 .4 0.7 51
0.9 1.4 3.2 4.8 6.6 7.8 8.5 7.3 5,3 1 .5
1.2 1.5 3.0 4.6 6.1 7.6 8.4 7.3 5.2 3.4 1.4 0.750.5
1.3 1.5 2.4 3.5 4.4 6.0 5.9 5.41 4.4 2.8 1.4 3.7 39.5
12 13 2.4 3.3 z.0 4.8 4.8 4.91 4.3 2.7 !.3 0.7 358
1.1 1.5 2.8 4.4 5.9 7.3 8.1 7.0 5.3 3.4 1.4 0.748.8
1.1 1.5 2.8 4.4 5.9 7.4 8.2 7.1 5.0 3.4 1.4 0.7 49.0
YosemiteViilaoe 0.7 1.0 2.3 3.7 5.1 6.5 7.1 6.1 4.4 2.9 !.1 9.6 41.4
Fort Bragg
Point Arena
Hopland
Ukiah
Mercecl
Los Banos
Bridgeport
Castroville
King City
Long Valley
Monterey
Salinas
Soledad
St. Helena
Yountville
Grass Valley
Nevada City
Santa Aha
Laguna Beach
Auburn
Blue Canyon
Coif ax
Soda Springs
Tahoe City
Truckee
0.9 1.3 2.2 3.0 3.7 3.5 3.7 3.7 3.0 2.3 ;.2 0.7 29.0
1.0 1.3 2.3 3.0 3.7 3.9 3.7 3.7 3.0 2.3 1.2 0.729.6
1.1 1.3 2.6 3.4 5.0 5.9 6.5 5.7 4.5 2.8 1.3 0.740.9
1.0 1.3 2.6 3.3 5.0 5.8 6.7 5.9 4.5 2.8 1.3 0.7 40.9
1.0 1.5 3.2 4.7 6.6 7.9 8.5 7.2 5.3 3.4 1.4 0.7 51.5
1.0 1.5 3.2 4.7 6.1 7.4 8.2 7.0 5.3 3.4 1.4 0.750.0
0.7 0.9 2.2 3.8 5.5 6.6 7.4 6.7 4.7 2.7 1.2 0.5 43.0
1.6 1.8 2.7 3.5 4.4 4.4 4.5 4.2 3.8 2.8 1.8 1.336.7
1.7 2.0 3.4 4.4 4.4 5.6 6.1 6.7 6.5 5.2 2.2 1.3 49.6
1.5 1.9 3.2 4.1 5.8 6.5 7.3 6.7 5.3 3.6 2.0 1.2 49.1
1.7 1.8 2.7 3.5 4.0 4.1 4.3 4.2 3.5 2.8 1.9 1.5 36.0
1.6 1.9 2.7 3.8 4.8 4.7 5.0 4.5 4.0 2.9 1.9 1.339.1
1.7 2.0 3.4 4.4 5.5 5.4 6.5 6.2 5.2 3.7 2.2 1.5 47,7
1.2 1.5 2.8 3.9 5.1 6.1 7.0 6.2 4.8 3.1 1.4 0.9 44.1
1.3 1.7 2.8 3.9 5.1 6.0 7.1 6.1 4.8 3.1 1.5 0.9 44.3
1.1 1.5 2.6 4.0 5.7 7.1 7.9 7.1 5.3 3.2 1.5 0.9 48.0
1.1 1.5 2.6 3.9 5.8 6.9 7.9 7.0 5.3 3.2 1.4 0.9 47.4
2.2 2.7 3.7 4.5 4.6 5.4 6,2 6.1 4.7 3.7 2.5 2.0 48.2
2.2 2.7 3.4 3.8 4.6 4.6 4.9 4.9 4.4 3.4 2.4 2.0 ~.2
1.2 1.7 2.8 4.4 6.1 7.4 8.3 7.3 5.4 3.4 1.6 1.050.6
0.7 1.1 2.1 3.4 4.8 6.0 7,2 6.1 4.6 2.9 0.9 0.6 40.5
1.1 1.5 2.6 4.0 5.8 7.1 7.9 7.0 5,3 3.2 1.4 0.9 479
0.7 0.7 1.8 3.0 4.3 5.3 6.2 5,5 4.1 2.5 0.7 0.735.4
0.7 0.7 1.7 3.0 4.3 5.4 6.1 5.6 4.1 2.4 0.8 0.635.5
0.7 0.7 1.7 3.2 4.4 5.4 ~4 57 4~ 2.4 081 0.6 36~
-- 35
Section 495 Continued
County , City
Plumas Quincy
Po rtola
Riverside Beaumont
Blythe
Coachella
Desert Center
Elsinore
Indio
Palm Desert
Palm Springs
Riverside
Sacramento Rc~ewile
Sacramento
San Cen,to Hc hs:er
San ¢,ernarcmo Baker
Barstow
Chino
Cresfline
Needles
LJcerne Yailey
San Bernardino
Ann.
Jan Feb Mar Apr May Jun Ju Aug Sep Oct Nov Dec Eto
0.7 0.9 2.2 3.5 4.9 5.9 7.3 5.9 4.4 2.8 1.2 0.5 40.2
0.7 0.9 2.0 3.5 4.9 5.9 7.3 5.9 4.3 2.7 0.9 0.5 39.4
2.0 2.3 3.4 4.4 6.1 7.1 7.6 7.9 6.0 3.9 2.6 1.7 55.0
3.2 4.2 6.7 8.9 11.1 12.4 12.8 11.1 9.1 6.7 4.0 2.7 92.9
2.9 4.4 6.2 8.4 10.5 11.9 12.3 10.1 8.9 6.2 3.8 2.4 88.1
2.9 4.1 6.4 8.5 11.0 12.1 12.2 11.1 9.0 6.4 3.9 2.6 90.0
2.1 2.8 3.9 4.4 5.9 7.1 7.6 7.0 5.8 3.9 2.6 2.0 55.0
2.9 4.0 6.2 8.3 10.5 11.9 12.3 10.0 8.9 6.4 3.8 2.4 87.6
2.0 3.5 4.9 7.7 8.5 10.6 9.8 9.2 8.4 6.1 2.7 1.8 75.1
2.0 2.9 4.9 7.2 8.3 8.5 11.6 8.3 7.2 5.9 2.7 1.7 71.1
2.1 2.9 4.0 4.1 6.1 7.1 7.9 7.6 6.1 4.2 2.6 2.0 56.5
1.1 1.7 3.1 4.7 6.2 7.7 8.5 7.3 5.6 3.7 1.7 1.0 52.2
1.0 1.8 3.2 4.7 6.4 7.7 8.4 7.2 5.4 3.7 1.7 0.9 51,9
~.5 1.8 3.1 4,3 5.5 5.7 6.4 5.9 5.C 3.5 !.7 1.! z5.;
2.7 3.9 6.1 8.3 10.4 11.8 12.2 11.0 8.9 6.1 3.3 2.1 86.5
2.6 3.6 5.7 7.9 10.1 11.6 12.0 10.4 8.8 5.7 3.3 2.1 83.8
2.1 2.9 3.9 4.5 ,5.7 6.5 7.3 7.1 5.9 4.2 2.6 2.0 54.6
1.5 1.9 3.3 4.4 5.5 6.6 7.8 7.1 5.4 3.5 2.2 1.6 50.8
3.2 4.2 8.8 8.9 11.0 12.4 12.8 11.0 8.g, 6.5 4.0 2.7 92.;
2.2 2.9 5.1 6.5 9.2 11.0 11.4 9.9 7.4 5.0 3.0 1.8 75.3
2.0 2.7 3,8 4.6 '5.7 6.9 7.9 7.4 5.9 4.2 2.6 2.0 55.8
TwentyninePalms 2.6 3.6 5.9 7.9 10.1 11.2 11.2 10.3 8,6 5.9 3.4 2.2 82.9
Victorville
San D;c--,cjo Chula Vista
Escondido
Oceanside
Pne Vadey
Ramona
San Diego
Santee
Warner Springs
San Francisco San Francisco
'San Joaquin Farmington
Lo( i
Manteca
Stockton
Tracy
San Luls Obispo Arroyo Grande
Atascadero
Mo,to Bay
Paso Robles
San Luis Obispo
San Miguel
San Simeon
San Mateo Hal' Moon Bay
Redwood C~
Santa Barbara Carpenteria
Guadalupe
Los Alamos
Lompoc
Santa Barbara
Sacra Maria
Soh/ang
2.3 3.1 49 6.7 9.310,0!1.2 9.8 7.4 5.1 2.8 1.8 74.6
2.2 2.7 3.4 3.8 4.9 4.7 5.5 4.9 4.5 3.4 2.4 2.0 ~.2'
2.1 2.8 3.8 4.7 5.6 6.7 6.8 6.5 5.4 3.8 2.5 2.052.6
2.2 2.7 3.4 3.7 4.9 4.6 4.6 5.! 4.1 3.3 2.4 2.042.9
1.5 2.4 3.8 5.1 6.0 7.0 7.8 7.3 6.0 4.0 2.2 1.754.8
2.1 2.5 4.0 4.7 5.6 6.5 7.3 7.0 5.6 3.9 2.5 1.753.4
2.2,2.5 3.3 3.4 4.4 4.0 4.6 4.6 3.9 3.3 2.2 2.340.6
2.1 2.7 3.7 4.5 5.5 6.1 6.6 6.2 5.4 3.8 2.6 2.051.1
1.6 2.7 3.7 4.7 5.7 7.6 8.3 7.7 6.3 4.0 2.5 1.356.0
1.5 1.3 2.4 3.0 3.7 4.6 4.9 4.8 4.1 2.8 1.3 0.735.1
1.5 1.5 2.9 4.7 6.2 7.6 8.1 6.8 5.3 3.3 1.4 0.750.0
0.9 1.5 2.9 5.1 6.5 7.0 7.7 7.7 5.2 3.1 1.3 0.749.5
1.5 1.5 3.0 4.7 6.4 7.6 8.1 6.8 5.3 3.3 1.4 0.650.1
0.8 1.5 2.9 4.7 6.2 7.4 8.1 6.8 5.3 3.2 1.4 0.6 49.1
1.0 1.5 2.9 4.5 6.1 7.3 7.9 6.7 5.3 3.2 1.3 0.748.5
2.0 2.2 3.2 3.8 4.3 4.7 4.3 4.6 3.8 3.2 2.4 1.740.0
1.2 1.5 2.8 3.9 4.5 6.0 6.7 6,2 5.0 3.2 1.7 1.0 ~.7
2.0 2.2 3.1 3.5 4.3 4.5 4.6 4.6 3.8 3.5 2.1 1.739.9
1.6 2.0 3.2 4.3 5.5 6.3 7.3 6.7 5.1 3.7 2.1 1.449.0
2.0 2.2 3.2 4.1 4.9 5.3 4.6 5.5 4.4 3.5 2.4 1.7 ~.8
1.6 2.0 3.2 4.3 5.0 6.4 7.4 6.8 5.1 3.7 2.1 1.4 49.0
2.0 2.0 2.9 3.5 4.2 4.4 4.6 4.3 3.5 3.1 2.0 1.738.1
1.5 1.7 2.4 3.0 3.9 4.3 4.3 4.2 3.5 2.8 1.3 1.0 3.7
1.5 1.8 2.9 3.8 5.2 5.3 6.2 5.6 4.8 3.1 1.7 1.042.8
2.0 2.4 3.2 3,9 4.8 5.2 5.5 5.7 4.5 3.4 2.4 2.0 ~.9
2.0 2.2 3.2 3.7 4.9 4.6 4.5 4.6 4.1 3.3 2.4 1,741.1
1.8 2.0 3.2 4.1 4.9 5.3 5.7 5.5 4.4 3.7 2.4 1.6 ~.6
2.0 2.2 3.2 3.7 4.8 4.6 4.9 4.8 3.9 3.2 2.4 1.741.1
2.0 2.5 3.2 3.8 4.6 5.1 5.5 4.5 3.4 2.4 1.8 1.8 40.6
1.8 2.2 3.2 4.O 5.0 5.1 5.1 5.1 4.5 3.5 2.4 1.7 ~.7
2.0 2.0 3.3 4.3 5.0 5.6 6.1 5.6 4.4 3.7 2.2 1.6 45.6
Section
495
Continued
36
,County
Santa Clara
Santa Cruz
Shasta
'Sierra
Sisk~you
Soiano
'Sonoma
Stanislaus
Sutler
Tenama
Trinity
Toulomrne
Tulare
Ventura
Yolo
Yuba
City
Gilroy
Los Gatos
Polo Alto
San Jose
Santa Cruz
Watsonville
Burney
Fall River Milts
Glenburn
Reddin(:j
Downiewlle
Sierraville
Happy Camp
Mt, Shasta
Tulelake
Weed
Yreka
Faidield
Rio Vista
C_,:overdale
Fort Ross
Headdsburg
Lincoln
Petalurna
Santa Rosa
La Grange
Modesto
Newman
Oakdate
Turlock
Yuba
Red Bluff
Corning
Hay Fork
Weaverville
Groveland
Sonora
Alpaugh
Badger
Dinuba
Porterville
Visalia
Oxnard
Thousand Oaks
Ventura
Davis
Winters ·
Woodland
Brownsville
Ann.
Jan Feb Mar Apr May Jun Ju Aug Sep Oct Nov D~ Eto
1.5 1.8 2.8 3.9 5.0 5.6 6.2 5.5 4.7 3.2 1.7 1.1 42.9
1.5 1.8 2.8 3.8 5.2 5,3 6.2 5.6 5.0 3.2 1,7 1.043.0
1.5 1.8 3.1 4.1 5.5 5.8 6.5 5.9 5.2 3.3 1,8 1.045.3
1.5 1.82.6 3.5 4.3 4.4 4.8 4.4 3.8 2.8 1.7 1.236.6
1,5 1.8 2.7 3.7 4.6 4.5 4,9 4.2 4.0 2.9 1.8 1.2 37.7
0,7 1.0 2.1 3.5 4,9 5.9 7.4 6.4 4.4 2.9 0.9 0,640.9
0.6 1.0 2.1 3.7 5.0 6.1 7,8 6,7 4.6 2.8 0.9 0.541.8
0,6 1.0 2.1 3.7 5.0 6.3 7.8 6.7 4.7 2.8 0.9 0.642.1
1.2 1.4 2.6 4.1 5.6 7.1 8.5 7.3 5.3 3.2 1.4 0.9 48.8
0.7 1.0 2.3 3.5 5.0 6.0 7.4 6.2 4.7 2.8 0.9 0.6 41.3
0.7 1.1 2.2 3.2 4.5 5.9 7.3 6.4 4.3 2.6 0.9 0.539.6
0.5 0.9 2.0 3.0 4.3 5.2 6.1 5.3 4.1 2.4 0.9 0.5 35.1
0.5 0.9 2.0 3.0 4.5 5.3 6.7 5.7 4.0 2.2 0.7 0,5 36.0
3.5 0.9 2.1 3.4 5.3 5.9 7.9 6.7 4.4 2.7 0.9 0.5 41.2
0.5 0.9 2.3 2.5 4.5 5.3 6.7 5.5 3.7 2.0 0.9 0.534.9
0.6 0.9 2.~ 3.0 z.9 5.8 7,3 6.5 4.3 2,5 0.9 0.5 39,2
1.1 1.7 2.8 4.0 5,5 6.1 7.8 6.0 4.8 3,1 1.4 0.9 45.2
0.9 1.7 2.8 4,4 5.9 6.7 7.9 6.5 5.? 3.2 1.3 0.747.0
1.1 1.4 2.6 3.4 5.0 5.9 6.2 5.6 z.5 2.8 1.4 0.740.7
1.2 1.z 2.2 3,0 3.7 4.5 4.2 4.3 3.4 2.4 1.2 0,5 31.9
1.2 1.5 2.4 3.5 5.0 5.9 6,1 5.6 4.5 2.8 1.4 0.740.8
1.2 1.7 2.8 4.7 6.1 7.4 8.4 7.3 5.4 3.7 1.9 1.2 51.9
1.2 1.5 2.8 3.7 4.6 5.6 4.6 5.7 4.5 2.9 1.4 0.939.6
1.2 1.7 2.8 3.7 5.0 6.0 6.1 5.9 4.5 29 '.5 0.7 42.3
1.2 1.5 3.1 4.7 6.2 7.7 8.5 7.3 5.3 3.4 1.4 0,751.2'
0.9 1.4 3.2 4.7 6.4 7.7 8.1 6.8 5.0 3.4 ~.4 0,749.7
1.0 1.5 3.2 4.6 6.2 7.4 8.1 6.7 5.0 3.4 1.4 0.749.3
1.2 1.5 3.2 4.7 6.2 7.7 8.1 7.~ 5.1 3.4 1.4 0.7 50,3
0.9 1.5 3.2 4.7 6.5 7.7 8.2 7.0 5.1 3.4 1.4 0.750.2
1.3 2.1 2.8 4.4 5.7 7.2 7.1 6.~ 4,7 3.2 1.2 0.946.7
1.2 1.8 ~9 4.4 5.9 7.4 6.5 7.3 5.4 3.5 1.7 1.0 51.1
1.2 1.8 2.9 4,5 6.1 7.3 8.1 7.2 5:3 3.7 1.7 1.1 50.7
0.5 1.1 2.3 3,5 4.9 5.9 7.0 6.0 4.5 2.8 0.9 0.7 40.1
0.6 1.1 2.2 3.3 4.9 5.9 7.3 6.0 4.4 2.7 0.9 0.740.0
1.1 1.5 2.8 4.1 5.7 7.2 7.9 6.6 5.1 3.3 1.4 0.7 47.5
1.1 1.5 2.8 4.1 5.8 7.2 7.9 6.7 5.1 3.2 1.4 0.7 47.6
0,9 1.7 3.4 4.8 6,6 7.7 8.2 7.3 5.4 3.4 1.4 0.751.6
1,0 1.3 2.7 4.1 6.0 7.3 7.7 7.0 4.8 3.3 1.4 0,747.3
1,1 1.5 3.2 4.7 6.2 7.7 8.5 7.3 5,3 3.4 1.4 0.751.2
1.2 1.8 3.4 4.7 6.6 7.7 8.5 7.3 5.3 3.4 1.4 0.752.1
1.0 1.8 3.4 5.4 7.0 8.2 8.4 7.2 5.7 3.8 1,7 0.954.3
2.2 2.5 3.2 3.7 4.4 4.6 5.4 4.8 4.0 3.3 2,4 2.0 42.3
2.2 2.7 3.4 4.5 5.4 5.9 6.7 6,4 5.4 3.9 2.6 2.0 51.0
2.2 2.7 3.2 3.8 4.6 4.7 5.5 4.9 4.1 3.4 2.5 2.0 43.5
1.0 1.9 3.3 5.0 6.4 7.6 8.2 7.1 5.4 4.0 1.8 1.0 52.5
1.7 1.7 2,9 4,4 5.8 7.1 7.9 6.7 5.3 3.3 1.6 1.0 49.4
1.0 1.8 3.2 4.7 6.1 7.7 8.2 7.2 5.4 3.7 1.7 1.0 51.6
1.1 1.4 2.6 4.0 5.7 6.8 7.9 6.8 5.3 3,4 1.5 0.9 47.4
Average "1.4 1.9 3.2 4.6 6,0 6,9 7.6 6.8 5.3 3.6 1.8 1.1 50.2 M~ 3.2 4.4 6.7 8.9 11.1 12.4 12.8 11.1 9.1 6.7 4.0 2.7 92.9
Uin 0.5 0.7 1.7 2.5 3.7, 35. 37 3.~. 3.0 2.0. ~. 0.4 27,5