The following table, designated as appendix A to this chapter, should be used in implementing the provisions of this chapter.
APPENDIX A
REFERENCE EVAPOTRANSPIRATION (ETo) TABLE1
County And City
|
Jan.
|
Feb.
|
Mar.
|
Apr.
|
May
|
Jun.
|
Jul.
|
Aug.
|
Sep.
|
Oct.
|
Nov.
|
Dec.
|
Annual ETo
|
County And City
|
Jan.
|
Feb.
|
Mar.
|
Apr.
|
May
|
Jun.
|
Jul.
|
Aug.
|
Sep.
|
Oct.
|
Nov.
|
Dec.
|
Annual ETo
|
Plumas | |||||||||||||
Portola | 0.7 | 0.9 | 1.9 | 3.5 | 4.9 | 5.9 | 7.3 | 5.9 | 4.3 | 2.7 | 0.9 | 0.5 | 39.4 |
Quincy | 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 |
Riverside | |||||||||||||
Beaumont | 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 |
Blythe | 2.4 | 3.3 | 5.3 | 6.9 | 8.7 | 9.6 | 9.6 | 8.7 | 6.9 | 5.0 | 3.0 | 2.2 | 71.4 |
Cathedral City | 1.6 | 2.2 | 3.7 | 5.1 | 6.8 | 7.8 | 8.7 | 7.8 | 5.7 | 4.0 | 2.1 | 1.6 | 57.1 |
Coachella | 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 |
Desert Center | 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 |
Elsinore | 2.1 | 2.8 | 3.9 | 4.4 | 5.9 | 7.1 | 7.6 | 7.0 | 5.8 | 3.9 | 2.6 | 1.9 | 55.0 |
Indio | 3.1 | 3.6 | 6.5 | 8.3 | 10.5 | 11.0 | 10.8 | 9.7 | 8.3 | 5.9 | 3.7 | 2.7 | 83.9 |
La Quinta | 2.4 | 2.8 | 5.2 | 6.5 | 8.3 | 8.7 | 8.5 | 7.9 | 6.5 | 4.5 | 2.7 | 2.2 | 66.2 |
Mecca | 2.6 | 3.3 | 5.7 | 7.2 | 8.6 | 9.0 | 8.8 | 8.2 | 6.8 | 5.0 | 3.2 | 2.4 | 70.8 |
Oasis | 2.9 | 3.3 | 5.3 | 6.1 | 8.5 | 8.9 | 8.7 | 7.9 | 6.9 | 4.8 | 2.9 | 2.3 | 68.4 |
Palm Desert | 2.5 | 3.4 | 5.3 | 6.9 | 8.7 | 9.6 | 9.6 | 8.7 | 6.9 | 5.0 | 3.0 | 2.2 | 71.6 |
Palm Springs | 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 |
Rancho California | 1.8 | 2.2 | 3.4 | 4.8 | 5.6 | 6.3 | 6.5 | 6.2 | 4.8 | 3.7 | 2.4 | 1.8 | 49.5 |
Rancho Mirage | 2.4 | 3.3 | 5.3 | 6.9 | 8.7 | 9.6 | 9.6 | 8.7 | 6.9 | 5.0 | 3.0 | 2.2 | 71.4 |
Ripley | 2.7 | 3.3 | 5.6 | 7.2 | 8.7 | 8.7 | 8.4 | 7.6 | 6.2 | 4.6 | 2.8 | 2.2 | 67.8 |
Riverside (cont.) | |||||||||||||
Salton Sea North | 2.5 | 3.3 | 5.5 | 7.2 | 8.8 | 9.3 | 9.2 | 8.5 | 6.8 | 5.2 | 3.1 | 2.3 | 71.7 |
Temecula East II | 2.3 | 2.4 | 4.1 | 4.9 | 6.4 | 7.0 | 7.8 | 7.4 | 5.7 | 4.1 | 2.6 | 2.2 | 56.7 |
Thermal | 2.4 | 3.3 | 5.5 | 7.6 | 9.1 | 9.6 | 9.3 | 8.6 | 7.1 | 5.2 | 3.1 | 2.1 | 72.8 |
Riverside UC | 2.5 | 2.9 | 4.2 | 5.3 | 5.9 | 6.6 | 7.2 | 6.9 | 5.4 | 4.1 | 2.9 | 2.6 | 56.4 |
Winchester | 2.3 | 2.4 | 4.1 | 4.9 | 6.4 | 6.9 | 7.7 | 7.5 | 6.0 | 3.9 | 2.6 | 2.1 | 56.8 |
Sacramento | |||||||||||||
Fair Oaks | 1.0 | 1.6 | 3.4 | 4.1 | 6.5 | 7.5 | 8.1 | 7.1 | 5.2 | 3.4 | 1.5 | 1.0 | 50.5 |
Sacramento | 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 |
Twitchell Island | 1.2 | 1.8 | 3.9 | 5.3 | 7.4 | 8.8 | 9.1 | 7.8 | 5.9 | 3.8 | 1.7 | 1.2 | 57.9 |
San Benito | |||||||||||||
Hollister | 1.5 | 1.8 | 3.1 | 4.3 | 5.5 | 5.7 | 6.4 | 5.9 | 5.0 | 3.5 | 1.7 | 1.1 | 45.1 |
San Benito | 1.2 | 1.6 | 3.1 | 4.6 | 5.6 | 6.4 | 6.9 | 6.5 | 4.8 | 3.7 | 1.7 | 1.2 | 47.2 |
San Juan Valley | 1.4 | 1.8 | 3.4 | 4.5 | 6.0 | 6.7 | 7.1 | 6.4 | 5.0 | 3.5 | 1.8 | 1.4 | 49.1 |
San Bernardino | |||||||||||||
Baker | 2.7 | 3.9 | 6.1 | 8.3 | 10.4 | 11.8 | 12.2 | 11.0 | 8.9 | 6.1 | 3.3 | 2.1 | 86.6 |
Barstow NE | 2.2 | 2.9 | 5.3 | 6.9 | 9.0 | 10.1 | 9.9 | 8.9 | 6.8 | 4.8 | 2.7 | 2.1 | 71.7 |
Big Bear Lake | 1.8 | 2.6 | 4.6 | 6.0 | 7.0 | 7.6 | 8.1 | 7.4 | 5.4 | 4.1 | 2.4 | 1.8 | 58.6 |
Chino | 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 |
Crestline | 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 |
Lake Arrowhead | 1.8 | 2.6 | 4.6 | 6.0 | 7.0 | 7.6 | 8.1 | 7.4 | 5.4 | 4.1 | 2.4 | 1.8 | 58.6 |
Lucerne Valley | 2.2 | 2.9 | 5.1 | 6.5 | 9.1 | 11.0 | 11.4 | 9.9 | 7.4 | 5.0 | 3.0 | 1.8 | 75.3 |
Needles | 3.2 | 4.2 | 6.6 | 8.9 | 11.0 | 12.4 | 12.8 | 11.0 | 8.9 | 6.6 | 4.0 | 2.7 | 92.1 |
Newberry Springs | 2.1 | 2.9 | 5.3 | 8.4 | 9.8 | 10.9 | 11.1 | 9.9 | 7.6 | 5.2 | 3.1 | 2.0 | 78.2 |
San Bernardino | 2.0 | 2.7 | 3.8 | 4.6 | 5.7 | 6.9 | 7.9 | 7.4 | 5.9 | 4.2 | 2.6 | 2.0 | 55.6 |
San Bernardino (cont.) | |||||||||||||
Twentynine Palms | 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 | 2.0 | 2.6 | 4.6 | 6.2 | 7.3 | 8.9 | 9.8 | 9.0 | 6.5 | 4.7 | 2.7 | 2.1 | 66.2 |
San Diego | |||||||||||||
Chula Vista | 2.2 | 2.7 | 3.4 | 3.8 | 4.9 | 4.7 | 5.5 | 4.9 | 4.5 | 3.4 | 2.4 | 2.0 | 44.2 |
Escondido SPV | 2.4 | 2.6 | 3.9 | 4.7 | 5.9 | 6.5 | 7.1 | 6.7 | 5.3 | 3.9 | 2.8 | 2.3 | 54.2 |
Miramar | 2.3 | 2.5 | 3.7 | 4.1 | 5.1 | 5.4 | 6.1 | 5.8 | 4.5 | 3.3 | 2.4 | 2.1 | 47.1 |
Note:
1. The values in this table are derived from:
a. California irrigation management information system (CIMIS);
b. Reference evapotranspiration zones map, UC department of land, air and water resources and California department of water resources, 1999; and
c. Reference evapotranspiration for California, University of California, department of agriculture and natural resources (1987) bulletin 1922;
d. Determining daily reference evapotranspiration, cooperative extension UC division of agriculture and natural resources (1987), publication leaflet 21426.
(Ord. 2917, 2021: Ord. 2724 § 1, 2009)