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Predicting attainable irrigation efficiencies in the upper Snake River region. Project A-040-IDA Item Info

Present irrigation efficiencies and reasonably attainable irrigation efficiencies were evaluated in a study conducted on independent irrigation districts in the Upper Snake River Region of southern Idaho. Irrigation water use was investigated on six irrigation districts during the 1974 irrigation season. The irrigation districts selected typify most irrigation systems in the region, which was divided into 3 sub-areas having similar irrigation water use characteristics. River diversion data, conveyance system seepage loss data, crop distribution and return flow data were compiled. Deep percolation losses and irrigation efficiencies were derived using , an inflow-outflow water balance analysis. Present farm irrigation efficiencies varied from 11 to 62 percent on the districts. Project irrigation efficiencies ranged from 10 to 42 percent. By predicting attainable farm irrigation efficiencies of 60 percent, reasonably attainable project irrigation efficiencies were projected to range from 35 to 51 percent. Low present farm irrigation efficiencies were attributed to over-irrigation caused by long field runs combined with high intake rate soils. Lining main canal systems to reduce seepage would not significantly increase project irrigation efficiencies. Large decreases in river diversion could be obtained by increasing farm irrigation efficiencies.

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Title:
Predicting attainable irrigation efficiencies in the upper Snake River region. Project A-040-IDA
Authors:
Claiborn, Brent A.
Date Created (ISO Standard):
1975-05
Description:
Present irrigation efficiencies and reasonably attainable irrigation efficiencies were evaluated in a study conducted on independent irrigation districts in the Upper Snake River Region of southern Idaho. Irrigation water use was investigated on six irrigation districts during the 1974 irrigation season. The irrigation districts selected typify most irrigation systems in the region, which was divided into 3 sub-areas having similar irrigation water use characteristics. River diversion data, conveyance system seepage loss data, crop distribution and return flow data were compiled. Deep percolation losses and irrigation efficiencies were derived using , an inflow-outflow water balance analysis. Present farm irrigation efficiencies varied from 11 to 62 percent on the districts. Project irrigation efficiencies ranged from 10 to 42 percent. By predicting attainable farm irrigation efficiencies of 60 percent, reasonably attainable project irrigation efficiencies were projected to range from 35 to 51 percent. Low present farm irrigation efficiencies were attributed to over-irrigation caused by long field runs combined with high intake rate soils. Lining main canal systems to reduce seepage would not significantly increase project irrigation efficiencies. Large decreases in river diversion could be obtained by increasing farm irrigation efficiencies.
Subjects:
irrigation efficiency irrigation districts seepage loss
Location:
Upper Snake River Basin
Latitude:
46.11
Longitude:
-116.57
Collection:
IWRRI
Series:
Water for Idaho
IWRRI number:
197509
Rights:
Rights to the digital resource are held by the University of Idaho. http://www.uidaho.edu/
Publisher:
University of Idaho
Contributing Institution:
University of Idaho
Type:
Text
Format:
application/pdf
Cataloger:
wbv
Date Digitized:
2012

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Source
Preferred Citation:
"Predicting attainable irrigation efficiencies in the upper Snake River region. Project A-040-IDA", Idaho Waters Digital Library, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/iwdl/items/iwdl-197509.html
Rights
Rights:
Rights to the digital resource are held by the University of Idaho. http://www.uidaho.edu/
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