Upper Green River Basin Instream Flow Analysis – Wyoming Water Development Office

Follum Hydrologic Solutions (FHS) is conducting a Level I instream flow study for six stream segments in the Upper Green River Basin in Wyoming on behalf of the Wyoming Water Development Office. The project evaluates historic, current, and unappropriated streamflows to support defensible instream flow recommendations that balance ecological needs with existing water uses. FHS integrates long-term gage records, reconstructed streamflow datasets, water rights inventories, and geospatial analysis to quantify natural (“virgin”) flows, diversions, consumptive use, return flows, and storage influences across each study reach.