WWRC 87-07
Influence of Surface vs Subsurface Irrigation on Consumptive Use of Mountain Meadow Vegetation
Abstract
Measurements were taken in the Green River Basin of Wyoming to
investigate the effects of surface versus subsurface irrigation on
the consumptive use of mountain meadow vegetation. Water balance
lysimeters were used to measure mountain meadow water use with
surface irrigation during 1984 and 1985 and with both surface and
subsurface irrigation during 1986.
Results indicate that for July through September, water use
rates of mountain meadow vegetation for subsurface irrigation as
compared to surface irrigation were 7%, 20%, and 33% lower for
water table depths that were 0.0 inches, 19.5 inches, and 45.0
inches, respectively. These results were for mountain meadow vegetation
during the first year of subsurface irrigation following a
series of years during which surface irrigation had been
practiced.
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