The eggs of endangered Kootenai River white sturgeon are less likely to hatch on some of the surfaces that have been made more common by human, or anthropogenic, changes on the river, according to a new U.S. Geological Survey report. … Continued
Imaging sonar is being used to estimate the population of sockeye salmon in Ozette Lake, located in Washington State. Surveyors are using imaging sonar technology at the lake’s outlet and along its shoreline to quantify the number of adult sockeye … Continued
The U.S. Fish and Wildlife Service (USFWS) recently released its 2012 National Fish Passage Program Annual Report. More than 200 dams and other fish passage obstacles on U.S. waterways were removed in 2012 through the U.S. Fish and Wildlife Service’s … Continued
Great Lakes resource managers can now determine rivers that may be vulnerable to Asian carp spawning if they were to spread into the Great Lakes Basin, according to a new U.S. Geological Survey report. Findings indicate that silver and bighead … Continued
A multi-year walleye tagging study that will eventually include thousands of fish was initiated on the Missouri River earlier this spring. The study area is big, running from Garrison Dam in central North Dakota downstream to Lake Oahe Dam in … Continued