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Reference Evapotranspiration Zones Cimiscalifornia Irrigation Management Information System

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Reference Evapotranspiration Zones Cimiscalifornia Irrigation Management Information System REFERENCE EVAPOTRANSPIRATION ZONES CIMISCALIFORNIA IRRIGATION MANAGEMENT INFORMATION SYSTEM The color map inside shows the reference evapotranspiration zones in California. It may be used to help in urban and agricultural water management planning and water budgeting, as well as designing irrigation systems, planning irrigation schedules, and designing open water evaporation systems. The map was developed as a cooperative project between the Department of Land, Air and Water Resources, University of California, Davis and the Office of Water Use Efficiency, California Department of Water Resources; Baryohay Davidoff. The map was prepared by David W. Jones, 1999. The data was developed by Richard L. Snyder, Simon Eching, and Helena Gomez-MacPherson. The background data came from Teale and USGS sources. CALIFORNIA DEPARTMENT OF WATER RESOURCES JANUARY 2012 124∫ 123∫ 42∫ 122∫ 121∫ 120∫ 42∫ Goose CRESCENT CITY River Lake Reference EvapoTranspiration (ETo) Zones Klamath Tule Lake t Sump YREKA Clear COASTAL PLAINS HEAVY FOG BELT NORTH CENTRAL PLATEAU & CENTRAL COAST RANGE D E L Lake Res. Upper Cool, high elevation areas with strong summer sunlight. t Alkali 1 Lowest ETo in California. Characterized by dense fog 10 Lake This zone has limited climate data and the zones N O R T E MODOC selection is somewhat subjective Kl am CALIFORNIA IRRIGATION MANAGEMENT INFORMATIONCENTRAL SIERRA SY NEVSADTEA M (CIMIS) a COASTAL MIXED FOG AREA t SISKIYOU h ALTURAS 2 Less fog and higher ETo than zone 1 11 Sierra Nevada Mountain valleys east of Sacramento t Middle with some influence from the delta breeze in summer R ver Alkali iv Ri e Pit Lake r 10 COASTAL VALLEYS AND PLAINS AND NORTH COAST MOUNTAINS EAST SIDE SACRAMENTO-SAN JOAQUIN VALLEY Lower More sunlight than zone 2 Low winter and high summer ETo with slightly Alkali REFEREN3CE EVAPOTRANSPIRATION12 ZONES lower ETo than zone 14 13 7 Lake 41∫ 1 SOUTH COAST INLAND PLAINS AND MOUNTAINS NORTH OF NORTHERN SIERRA NEVADA T r 41∫ SAN FRANCISCO Northern Sierra Nevada mountain valleys with less i n 4 13 i ver t t Ri y Pi More sunlight and higher summer ETo than zone 3 marine influence than zone 11 Clair Engle 3 Ri v Lake er MID-CENTRAL VALLEY, SOUTHERN SIERRA NEVADA, M NORTHERN INLAND VALLEYS a d TEHACHAPI & HIGH DESERT MOUNTAINS R 5 Valleys north of San Francisco 14 i SHASTA t v WEAVERVILLE High summer sunshine and wind in some locations. EUREKA e r t LASSEN Lake Shasta UPLAND CENTRAL COAST AND LOS ANGELES BASIN NORTHERN & SOUTHERN SAN JOAQUIN VALLEY REDDING TRINITY t Eagle Lake 6 Higher elevation coastal areas 15 Slightly lower winter ETo due to fog and slightly higher S summer ETo than zones 12 & 14 a cr HUMBOLDT am en E t SUSANVILLE el o NORTHEASTERN PLAINS WESTSIDE SAN JOAQUIN VALLEY & MOUNTAINS EAST R R iv i t e v r e & WEST OF IMPERIAL VALLEY r 7 16 Honey Lake RED BLUFF t Lake INLAND SAN FRANCISCO BAY AREA HIGH DESERT VALLEYS 14 Almanor 8 Inland area near San Francisco with some marine influence 17 Valleys in the high desert near Nevada and Arizona 40∫ TEHAMA 40∫ IMPERIAL VALLEY, DEATH VALLEY AND PALO VERDE reek QUINCY SOUTH COAST MARINE TO DESERT TRANSITION 124∫ s C oma t 13 Inland area between marine and desert climates Low desert areas with high sunlight and considerable Th 9 18 heat advection P L U M A S BUTTE MENDOCINO GLENN 12 OROVILLE t S I E R R A Monthly Average Reference Evapotranspiration by ETo Zone (inches/month) t DOWNIEVILLE WILLOWS r t e Lake iv Zone Jan FebMar AprMay JunJul AugSep OctNov Dec Total R Oroville r e h t r 1 0.93 1.40 2.48 3.30 4.03 4.50 4.65 4.03 3.30 2.48 1.20 0.62 a 32.9 e e iv F N E V A D A 4 R a b NEVADA CITY 2 1.24 1.68 3.10 3.90 4.65 5.10 4.96 4.65 3.90 2.79 1.80 1.24 39.0 COLUSA Yu t UKIAH t 3 1.86 2.24 3.72 4.80 5.27 5.70 5.58 5.27 4.20 3.41 2.40 1.86 46.3 YUBA CITY MAR YS VILLE t r e S tt iv 4 1.86 2.24 3.41 4.50 5.27 5.70 5.89 5.58 4.50 3.41 2.40 1.86 R PLACER Lake t 46.6 LAKEPORT r COLUSA U a Tahoe 39∫ R t e u YUBA B 5 0.93 1.68 2.79 4.20 5.58 6.30 6.51 5.89 4.50 3.10 1.50 0.93 43.9 s s T i a n Clear T 39∫ S 6 49.7 R Lake a 1.86 2.24 3.41 4.80 5.58 6.30 6.51 6.20 4.80 3.72 2.40 1.86 i c E AUBURN v r 1 e a r C m R t a e 7 0.62 1.40 2.48 3.90 5.27 6.30 7.44 6.51 4.80 2.79 1.20 0.62 L A K E c n 43.3 h t e o can R C ri iv r e e e Am r 8 1.24 1.68 3.41 4.80 6.20 6.90 7.44 6.51 5.10 3.41 1.80 0.93 49.4 e PLACERVILLE k Folsom WOODLAND Lake t 9 2.17 2.80 4.03 5.10 5.89 6.60 7.44 6.82 5.70 4.03 2.70 1.86 55.1 8 Ri t t v e r E L D O R A D O MARKLEEVILLE Lake SACRAMENTO 10 0.93 1.68 3.10 4.50 5.89 7.20 8.06 7.13 5.10 3.10 1.50 0.93 49.1 SONOMA Berryessa Y O L O t NAPA Putah Creek 11 1.55 2.24 3.10 4.50 5.89 7.20 8.06 7.44 5.70 3.72 2.10 1.55 53.1 SANTA ROSA N a O A L P I N E p T t a 12 53.4 R Ner 1.24 1.96 3.41 5.10 6.82 7.80 8.06 7.13 5.40 3.72 1.80 0.93 iv E iv A M A D O R e R r 14 M s e r 119∫ 13 1.24 1.96 3.10 4.80 6.51 7.80 8.99 7.75 5.70 3.72 1.80 0.93 54.3 A n e NAPA m t iv R u R t s JACKSON FAIRFIELD C o 14 1.55 2.24 3.72 5.10 6.82 7.80 8.68 7.75 5.70 4.03 2.10 1.55 57.0 A C t S SAN ANDREAS t ne BRIDGEPORT lum t 15 1.24 2.24 3.72 5.70 7.44 8.10 8.68 7.75 5.70 4.03 2.10 1.24 57.9 5 S O L A N O Moke 11 38∫ Suisin CALAVERAS 16 1.55 2.52 4.03 5.70 7.75 8.70 9.30 8.37 6.30 4.34 2.40 1.55 62.5 Bay Calaveras R. 38∫ MARIN 2 SONORA Mono 17 1.86 2.80 4.65 6.00 8.06 9.00 9.92 8.68 6.60 4.34 2.70 1.86 66.5 SAN STOCKTON Lake RAFAELt t t 123∫ MARTINEZ t 18 2.48 3.36 5.27 6.90 8.68 9.60 9.61 8.68 6.90 4.96 3.00 2.17 71.6 CONTRA r ve TUOLUMNE 1 SAN Ri New Don Variablity between stations within single zones is as high as 0.02 inches per day for t OAKLAND COS TA Pedro Res. SAN FRANCISCO t JOA QUIN Stanislaus M O N O zone 1 and during winter months in zone 13. The average standard deviation of the MODESTO ETo between estimation sites within a zone for all months is about 0.01 inches per 2 ver MARIPOSA 118∫ t Tuolumne Ri Lake S 6 ALAMEDA Crowley day for all 200 sites. A REDWOOD CITY iver N d R t ST ANISLA US Merce t M MARIPOSA A SAN JOSE 1 T t MERCED E t O SANTA O M A D E R A w e 3 n M E R C E D s SA CLARA San Luis 14 R i N Reservoir v TA e C 12 r 37∫ R 117∫ 37∫ t U MADERA S Z a t Millerton ro R. n Lake SANTA CRUZ ja J a o 122∫ P a q t u INDEPENDENCE in er Pine Flat HOLLISTER R iv t 15 iv FRESNO R Lake er s 2 g t in K t SALINAS SAN 18 FRESNO iver Owens Lake h R BENITO ea Sa w li Ka na INYO s R ive r K e VISALIA r n t t R 116∫ i HANFORD v e 12 r 6 16 TULARE . er R Tulare Riv Dry Lake 36∫ le n 36∫ Lake Tu r MONTEREY e K k r o F h t r KINGS u o S San Antonio Res. Searles Lake Nacimiento 14 Res. 16 Isabella Reservoir r ive Pos R SAN L UIS o Creek rn 14 Ke 1 115∫ 121∫ 10 15 t BAKERSFIELD SAN LUIS OBISPO t Soda Lake Buena Vista KERN Lake Bed 14 OBISPO 35∫ 35∫ Rogers Lake nta Maria R Sa .
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