A dam constructed at the outlet of Bradley Lake near Homer, Alaska has blocked natural flows to the lower Bradley River. To protect salmon egg incubation habitat during the period November 2 to April 30, a fish-water bypass was incorporated into the design of the dam to ensure a minimum discharge of 40 cubic feet per second in the lower river. This minimum flow determination was based on an open-water instream flow study that did not take into account effects of ice formation. A study was begun in March 1993 to determine winter flow conditions in the lower Bradley River. As a part of this study, data were collected at sites in the lower Bradley River to measure discharge, wetted perimeter, cross-sectional area, water depth, flow velocity, and specific conductance, as well as temperature and dissolved oxygen from both surface water and intragravel water. Discharge and specific conduc- tance in the Middle Fork Bradley River below North Fork Bradley River were also measured. This report presents data collected between March 1993 and April 1994.
Additional Publication Details
USGS Numbered Series
Hydrologic and water-quality data for the lower Bradley River, Alaska, March 1993 to April 1994
U.S. Geological Survey ;
Earth Science Information Center, Books and Open-File Reports Section [distributor],