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Semitropic Water Storage District is one of eight water storage districts in California and is the largest in Kern County. The District delivers water to nearly 300 customers for the irrigation of approximately 140,000 acres for agricultural uses. Semitropic also supplies energy to a variety of users and provides groundwater banking and storage services.

Established in 1958, Semitropic Water Storage District covers an area of more than 220,000 acres. It began as an irrigation district for the purpose of securing State Water Project supplies to reduce groundwater overdraft.

In the early 90s, Semitropic began its groundwater storage program in response to several challenges from the 1980s, including:

  • groundwater overdraft
  • rising energy costs
  • rising water costs
  • water shortages
  • poor agricultural economy

The development of the Semitropic Water Storage Bank was based on three primary objectives:

  • Increase water supply reliability.
  • Decrease the cost of water for irrigation.
  • Correct overdraft in the groundwater basin.
Semitropic currently banks 700,000 acre-feet of water in a groundwater storage bank with a capacity of 1.65 million acre-feet. The banking program contributes to meeting the drought-year needs of more than 20 million people at 15 to 20 gallons per day.

Irrigation Demand

Semitropic Water Storage District provides water to customers for agricultural use only. Throughout the district, water is used for the following crops (based on a 2019 crop survey):

Crops
Acres Percentage
Alfalfa
10,839.62
8.43%
Cotton
1,649.42
1.28%
Duck Pond
6,879.59
5.35%
Fruits
907.76
0.71%
Grain/Pasture
14,688.37
11.42%
Grapes
5991.26
4.66%
Nursery
429.80
0.33%
Nut Crops
84,364.14
65.58%
Vegetables
2,661.13
2.07%
Unidentified Crop
236.64
0.18%
Unidentified Grains
-
0.0%
     
Total Irrigated Acres
128,647.74
100%
     
Wast & Miscellaneous Land
7,125.65
Undeveloped Native Vegetation
33,541.04
Exempt lands
41,826.39
Fallowed Ground
8,432.42
Farmer Spreading Ground
932.46
Irrigation Ponds
415.16
Trees removed of being Replaced
1,813.37
   
Total District Acres
222,618.42
Ground out of production for 2019
11,178.25

 


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© 2019 Semitropic Water Storage District • 1101 Central Avenue, Wasco, CA 93280-0877 • 661-758-5113 • mail@semitropic.com
In case of an emergency, or for after-hours service, call (661) 758-5115.