Pollution

October 14, 2021

Cahaba Current: Flooding spotlights vulnerabilities

The scale of the rainfall on October 6 and the swiftness, level and power of the flooding it caused has been called “unprecedented.” Yet flooding and erosive damage to property and infrastructure has been increasing in our region for years, as development replaces forests and outdated stormwater systems prevent groundwater absorption and send more and more runoff gushing into drains and creeks. In fact, we’ve had two flash flood emergencies just in 2021, and multiple other deluge rains this calendar year.

Cahaba Current July 2021
July 30, 2021

Cahaba Current: July 2021

Learn about what our team has been working on this summer; find out what fish are unsafe to eat; read Cahaba River Society’s Equity, Diversity and Inclusion statement; help get lead out of drinking water; join us for the Cahaba River Fry-Down 2021, & more!

July 23, 2021

Do you fish in the Cahaba? Here’s what you need to know about where fish is unsafe to eat in 2021.

Fishing is a popular activity along the Cahaba and its tributaries, and many anglers rely on this food source to supplement their family’s diet. These people deserve to be able to rely on the fact that the fish they are eating are safe.  Right now, it is unlikely that consuming fish from the Cahaba River more than one time per month is safe. In some places on the Cahaba, the Alabama Department of Public Health recommend not eating any fish.

April 13, 2021

Cahaba Current: Spring 2021

This edition includes: Welcoming Ben Wegleitner, River Sustainability Director ~ A legal action to protect Birmingham Water Works Board lands that preserve our drinking water ~ CLEAN Environmental Education programs available ~ Army Corps commits funding to fish passage study ~ Catherine Coleman Flowers & The Guardian partner on sewage survey ~ Exploring Southeastern Biodiversity with Dr. Scot Duncan, & more!

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