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• Primary Irrigation Structures in the San Juan/Dolores River Basin <br />• Primary Irrigation Structures in the Rio Grande River Basin <br />• Primary Irrigation Structures in the South Platte River Basin (coming soon). <br /> <br /> <br /> <br /> <br /> <br /> <br />AWAS <br />AWAS is a computer program that can calculate river depletions using the Stream Depletion <br />Factor method (Jenkins, 1968) or the Analytical Stream Depletion method developed in <br />1987 by Dewayne R. Schroeder. The AWAS model was adopted as a DWR standard after a <br />detailed analysis and review (Review and Comparison of Stream Depletion Models, Chunming Yu, <br />September 15, 2006). The AWAS model can calculate depletions using daily or monthly time <br />steps. The user has the option to evaluate a number of different boundary conditions: <br />alluvial, infinite, no flow, and effective SDF. Model input for AWAS can either be in the form <br />of pumping records for each well consisting of a pumping rate and duration or net <br />consumptive use or recharge in a daily or a monthly time step. Year type can be set to <br />calendar, irrigation, or USGS. Data can be projected into the future or past based on <br />historical records, and the effect of turning off the well by specifying an end date beyond <br />the period of record can be simulated.