Analysis of Low Flows and Selected Methods for Estimating Low-Flow Characteristics at Partial-Record and Ungaged Stream Sites in Western Washington

Download or read book Analysis of Low Flows and Selected Methods for Estimating Low-Flow Characteristics at Partial-Record and Ungaged Stream Sites in Western Washington written by Christopher A. Curran and published by CreateSpace. This book was released on 2014-07-11 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: A regional low-flow survey of small, perennial streams in western Washington was initiated by the Northwest Indian Fisheries Commission (NWIFC), NWIFC-member tribes, and Point-No-Point Treaty Council in cooperation with the U.S. Geological Survey in 2007 and repeated by the tribes during the low-flow seasons of 2008–09. Low-flow measurements at 63 partial-record and miscellaneous streamflow-measurement sites during surveys in 2007–09 are used with concurrent flows at continuous streamflow-gaging stations (index sites) within the U.S. Geological Survey network to estimate the low-flow metric Q7,10 at each measurement site (Q7,10 is defined as the lowest average streamflow for a consecutive 7-day period that recurs on average once every 10 years).