Stormwater Pollution is Killing Coho Before Spawning

Case Studies

E-Newsletter

News

Resources

Water Management Associations

Stormwater Pollution is Killing Coho Before Spawning

The sweet seep of autumn rain is bringing coho salmon back home to their natal streams all over the Puget Sound basin — where too often they encounter a bitter truth: pollution in a shocking 40 percent of their home range so bad it can inflict a swift death.

The culprit is stormwater, and it is causing death rates so high, some populations of wild coho are at risk of local extinction, researchers found.

Researchers at NOAA’s Northwest Fisheries Science Center in Seattle worked with collaborators, including the U.S. Fish and Wildlife Service, local tribes and the Wild Fish Conservancy, to survey 51 sites from 2000 to 2011 in streams all over the Puget Sound basin. They used the survey data with a new computer model to map predicted coho death rates. The results show that in an estimated 40 percent of their range in the Puget Sound Basin, 10 to 40 percent of coho salmon die before they can even spawn because of pollution.

Click for the full article

About Us

Categories

From The Gallery

News Updates

Our Company
Case Studies
Products
Site Map

Resources/Tools
Parts/Service
International

Knocking on the Great Lakes Door - An aquatic invasive species that was first found in North America in the 1940’s, Eurasian watermilfoil has spread to almost every state, where it grows into thick mats that can make lakes impenetrable for boats and swimmers. Milfoil can make it impossible for native plants to grow, affecting fish and wildlife.

info@aquarius-systems.com | (262) 392-2162