AbstractImproving Stream Flow Estimates in NHDPlusTrack: Water Resources Author NHDPlus Version 1 (V01) included mean annual stream flow estimates using the Unit Runoff Method (UROM). There are proposals to improve the stream flow estimates in the NHDPlus Version 02 (V02). These improvements are based on the lessons learned from the UROM V01 stream flow estimates and opportunities to expand the stream flow estimates to include mean monthly and 7Q10 flows. The full proposal includes developing two other flow estimation methods. The second method is the development of Regional Regressions. Regression equations would be developed and used to compute the flow estimates. The third flow estimation technique proposed is to use the Spatially Referenced Regressions on Watershed Attributes (SPARROW) model. One major aspect of the proposed effort is the establishment of the selected set of stream flow gages upon which to base stream flow estimation. This gage database will provide an extremely valuable resource for other modeling efforts. Timothy Bondelid Independent Consultant 4661 Sperryville Pike Woodville, Virginia 22749 United States Phone: 540-987-8592 E-mail: timothy@trbondelid.com Richard Moore U.S. Geological Survey 331 Commerce Way Pembroke, New Hampshire 03275 United States Phone: 603-226-7825 E-mail: rmoore@usgs.gov Kernell Ries U.S. Geological Survey MD-DE-DC Water Science Center 5522 Research Park Drive Baltimore, Maryland 21228 United States Phone: (443)498-5617 E-mail: kries@usgs.gov |