Abstract

Improving Stream Flow Estimates in NHDPlus
Track: Water Resources
Authors: Timothy Bondelid, Richard Moore, Kernell Ries

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