1. Home
  2. Items
  3. Evaluation of urbanization and changes in land use on the...
PDF

Evaluation of urbanization and changes in land use on the water resources of mountain valleys. Research technical completion report, project B-038-IDA Item Info

The impact of projected changes in land use on the aquifer and stream systems of the Big Wood River-Silver Creek area in southern Idaho was evaluated using a finite difference model of the groundwater system. Water budget components were measured for the 1975-76 irrigation season on the 30,000 acre area for calibration of the model. Both water table and confined aquifers were simulated. Simulated groundwater levels and spring flows were determined for several projected changes in land use including canal lining programs, subdivision development, conversion to sprinkler irrigation, groundwater development and for irrigation and artificial recharge. Severe decreases of up to 38 percent in the discharge of Silver Creek, a productive spring fed trout stream, were projected. Groundwater levels in the water table and artesian aquifers could decline up to 16 feet. The most severe impacts will result from conversion of present flood end furrow irrigated land to sprinkler irrigation with attendant decrease in aquifer recharge. The 1977 drought, during which irrigation diversions were only 28% of the 1975 diversions, was simulated and compared with measured data. Reasonable comparisons of simulated and measured groundwater levels and spring flows supports the validity of the model as a planning tool.

View on Timeline View on Map Download PDF
Title:
Evaluation of urbanization and changes in land use on the water resources of mountain valleys. Research technical completion report, project B-038-IDA
Authors:
Brockway, C. E.; Grover, Kenneth P.
Date Created (ISO Standard):
1978-10
Description:
The impact of projected changes in land use on the aquifer and stream systems of the Big Wood River-Silver Creek area in southern Idaho was evaluated using a finite difference model of the groundwater system. Water budget components were measured for the 1975-76 irrigation season on the 30,000 acre area for calibration of the model. Both water table and confined aquifers were simulated. Simulated groundwater levels and spring flows were determined for several projected changes in land use including canal lining programs, subdivision development, conversion to sprinkler irrigation, groundwater development and for irrigation and artificial recharge. Severe decreases of up to 38 percent in the discharge of Silver Creek, a productive spring fed trout stream, were projected. Groundwater levels in the water table and artesian aquifers could decline up to 16 feet. The most severe impacts will result from conversion of present flood end furrow irrigated land to sprinkler irrigation with attendant decrease in aquifer recharge. The 1977 drought, during which irrigation diversions were only 28% of the 1975 diversions, was simulated and compared with measured data. Reasonable comparisons of simulated and measured groundwater levels and spring flows supports the validity of the model as a planning tool.
Subjects:
simulation water table confined aquifers community development
Location:
Silver Creek
Latitude:
43.31
Longitude:
-114.16
Collection:
IWRRI
IWRRI number:
197802
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

Contact us about this record

Source
Preferred Citation:
"Evaluation of urbanization and changes in land use on the water resources of mountain valleys. Research technical completion report, project B-038-IDA", Idaho Waters Digital Library, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/iwdl/items/iwdl-197802.html
Rights
Rights:
Rights to the digital resource are held by the University of Idaho. http://www.uidaho.edu/
« Previous Back to Browse Next »