Pollution

October 29, 2020

Cahaba Current: October 2020

Protecting drinking water lands, a proposed quarry in Clay, a proposed prison in Brierfield–find out about emerging threats to your River and what Cahaba River Society is doing to protect it.

October 29, 2020

Dams impact crayfish assemblages and genetic structure.

By Zanethia Choice Barnett, PhD Research Fisheries Biologist CBHR Dive Safety Officer Forest Service Center for Bottomland Hardwoods Research Southern Research Station Alabama has the most diverse crayfish fauna in the world, with more than 90 native species found in the state. Crayfishes play an important role in stream ecosystems by breaking down plant materials,

August 27, 2020

Cahaba Current: August 2020

With its amazing biodiversity, the Cahaba River is a top destination for anglers. Its fish have been an important food source for Cahaba communities from the earliest Native American inhabitants to the present day. But are they safe to eat?

August 25, 2020

Do you fish in the Cahaba? Here’s what you need to know about where fish is unsafe to eat in 2020.

Do you fish in the Cahaba? Here’s what you need to know about where fish is unsafe to eat in 2020.

Three of these advisories occurred in the Cahaba River, and all of these advisories were due to mercury, an airborne pollutant caused by the burning of fossil fuels, as is done by coal-fired power plants, and the burning of waste.

Fish consumption advisories for the Cahaba River have increased in recent years. In 2016, none of the Cahaba sampling locations detected mercury problems.  In the 2018 and 2019 Fish Consumption Advisories, THREE of FOUR sampling locations detected enough mercury to warrant limitations on consumption.

July 29, 2020

Alabama State Department of Environmental Management’s Nutrient Management Efforts

The Alabama Department of Environmental Management (ADEM) has recently released an interesting presentation about nutrient management for Alabama rivers and lakes that demonstrates much-needed progress in coping with the problem of nutrient pollution. The opening slides of the presentation describe programmatic approaches that have resulted in these impressive improvements.  A short history of the adoption