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AcknowledgmentsThe project documented in this report was conducted as part of the U.S. Geological Survey (USGS) Cooperative Water Program in cooperation with the Oklahoma Water Resources Board (OWRB). The authors value the contributions of many OWRB and USGS staff that led to the successful completion of the project. The authors thank the OWRB for support on this project and OWRB Water Resources geologist Christopher Neel for help with defining study objectives and providing hydrogeologic data. OWRB geologist Jon Sanford compiled drawdown data from well completion reports.The authors also thank former USGS employees Noel Osborn, who provided initial project coordination and management, and Trevor Grout, who compiled, organized, and analyzed available hydrologic and spatial data. USGS employees Marty Phillips and Martin Schneider measured stream base flow, and Kevin Smith measured hydraulic conductivity and water-table altitudes in addition to siting and maintaining continuous water-level recorder wells. Shana Mashburn provided guidance on recharge estimation techniques and facilitated data entry to the National Water Information System database. The authors acknowledge and appreciate the professionalism, experience, and dedication of these helpful colleagues. Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83).Altitude, as used in this report, refers to distance above the vertical datum.
Supplemental Information
AbstractOn September 8, 1981, the Oklahoma Water Resources Board established regulatory limits on the maximum annual yield of groundwater (343,042 acre-feet per year) and equalproportionate-share (EPS) pumping rate (1.0 acre-foot per acre per year) for the North Fork Red River aquifer. The maximum annual yield and EPS were based on a hydrologic investigation that used a numerical groundwater-flow model to evaluate the effects of potential groundwater withdrawals on groundwater availability in the North Fork Red River aquifer. The Oklahoma Water Resources Board is statutorily required (every 20 years) to update the hydrologic investigation on which the maximum annual yield and EPS were based. Because 20 years have elapsed since the final order was issued, the U.S. Geological Survey, in cooperation with the Oklahoma Water Resources Board, conducted an updated hydrologic investigation and evaluat...