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A digital model for planning water management at Benton Lake National Wildlife Refuge, west-central Montana

Scientific Investigations Report 2011-5133

Prepared in cooperation with the U.S. Fish and Wildlife Service
By:
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Abstract

Benton Lake National Wildlife Refuge is an important area for waterfowl production and migratory stopover in west-central Montana. Eight wetland units covering about 5,600 acres are the essential features of the refuge. Water availability for the wetland units can be uncertain owing to the large natural variations in precipitation and runoff and the high cost of pumping supplemental water. The U.S. Geological Survey, in cooperation with the U.S. Fish and Wildlife Service, has developed a digital model for planning water management. The model can simulate strategies for water transfers among the eight wetland units and account for variability in runoff and pumped water. This report describes this digital model, which uses a water-accounting spreadsheet to track inputs and outputs to each of the wetland units of Benton Lake National Wildlife Refuge. Inputs to the model include (1) monthly values for precipitation, pumped water, runoff, and evaporation; (2) water-level/capacity data for each wetland unit; and (3) the pan-evaporation coefficient. Outputs include monthly water volume and flooded surface area for each unit for as many as 5 consecutive years. The digital model was calibrated by comparing simulated and historical measured water volumes for specific test years.

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Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
A digital model for planning water management at Benton Lake National Wildlife Refuge, west-central Montana
Series title:
Scientific Investigations Report
Series number:
2011-5133
Year Published:
2011
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Reston, VA
Contributing office(s):
Montana Water Science Center
Description:
vi, 26 p.; Appendices; Appendix 2 Download
Time Range Start:
1983-01-01
Time Range End:
2008-12-31
Country:
United States
State:
Montana
County:
Cascade;Chouteau;Teton
Other Geospatial:
Benton Lake National Wildlife Refuge
Datum:
North American Datum of 1927
Projection:
Universal Transverse Mercator, Zone 12
Scale:
100000