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首页> 美国政府科技报告 >Impacts of Irrigation on Instream Flow Quantity: Part 1. WISFOM, the Well Impact on Stream Flow Model, and Part 2. An Analytical Model Determination of Volume and Rate of Stream Depletion by Intermittently Pumping Wells
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Impacts of Irrigation on Instream Flow Quantity: Part 1. WISFOM, the Well Impact on Stream Flow Model, and Part 2. An Analytical Model Determination of Volume and Rate of Stream Depletion by Intermittently Pumping Wells

机译：灌溉对流量的影响：第1部分：WIsFOm，井流模型对井流的影响，以及第2部分。间歇泵井的流量和流量消耗的分析模型确定

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Well pumping for irrigation and other long-term groundwater use remove water from groundwater storage and alters the water flux across aquifer boundaries. WISFOM is a computer model which approximates the influence of groundwater pumping on stream flow based on Jenkin's (1968) equation. The simplifications that have been incorporated into the computer algorithm are: WISFOM introduced the impact of pumping at a point on the river path rather than representing it as spatially distributed along a reach on the river; There are no time delays on the stream system. Once a digitized map of the watershed that includes the stream path is available, WISFOM can be used interactively to integrate the watershed characteristic with the pumping network that may consist of up to 100 well points. The computation included depletion rate and volume for each pump, reduction in flow rate and volume for the points in the river. The information will help establish a mechanism for managing the development of consumptive water use to allow optimal use of water for irrigation while minimizing reduction of summer baseflows that are critical to instream water uses (biological, recreation, waste disposal).

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