Displaying items by tag: cumberland plateau drought

Tennessee Aquarium Reintroduction Biologist II Teresa Israel examines a critically endangered laurel dace before its reintroduction to the wild in March 2025. In July 2024, about 300 of these fish — considered by scientists to be among the most imperiled in North America — were rescued out of rapidly drying streams on Walden Ridge north of Chattanooga.  Tennessee Aquarium

Improving drought conditions on Cumberland Plateau enabled return of fish after 2024 rescue

Casey Phillips is a communications specialist at the Tennessee Aquarium in Chattanooga.

CHATTANOOGA — After being saved from near-certain extinction last summer and overwintering in the expert care of biologists at the Tennessee Aquarium, more than 230 critically endangered laurel dace are finally back where they belong.

Last July, a prolonged regional drought caused many Southeast Tennessee streams to dwindle and, in some cases, dry up entirely. Atop Walden Ridge north of Chattanooga, water flow ceased at Bumbee Creek and Youngs Creek, the last sites known to support populations of laurel dace.

When conditions in these rapidly disappearing waterways reached a tipping point, the Aquarium led a series of emergency rescue operations to save as many of these red-bellied, highlighter yellow-finned minnows as possible. In coordination with the Tennessee Wildlife Resources Agency and with assistance from the U.S. Fish and Wildlife Service and the University of Georgia, about 300 laurel dace — the majority left on the planet — were relocated into the safety of human care at the Tennessee Aquarium in Chattanooga and Wolf Creek National Fish Hatchery in Jamestown, Kentucky.

According to the most recent report from the USDA’s U.S. Drought Monitor, much of Southeast Tennessee is still experiencing moderate drought conditions. However, a slightly wetter-than-average February made it safe to return these rescued minnows to the wild.

Tennessee Aquarium VP and Chief Conservation and Education Officer Dr. Anna George, right, and U.S. Fish and Wildlife Service Conservation Delivery Coordinator Geoff Call collect critically endangered laurel dace from a stream ravaged by a prolonged drought on the Cumberland Plateau. The rescue successfully relocated 105 adults into human care at the Tennessee Aquarium Conservation Institute’s headquarters near downtown Chattanooga.  Photos by Doug Strickland/Tennessee Aquarium

Drought prompts emergency rescue of one of America’s most endangered aquatic species

Casey Phillips is a writer for the Tennessee Aquarium.

CHATTANOOGA — Few things trigger louder or more distressing alarm bells among freshwater biologists than watching a waterway dry up during a severe, prolonged drought. That’s especially true when the disappearing stream is home to one of America’s most imperiled fish.

In late July, reports of dramatically withered streams atop Walden Ridge north of Chattanooga spurred an emergency rescue operation to prevent the extinction of the federally endangered laurel dace, which scientists consider to be among the 10 most at-risk fish in North America.

This effort was carried out by representatives from the Tennessee Aquarium, the U.S. Fish and Wildlife Service, and the University of Georgia’s River Basin Center in coordination with the Tennessee Wildlife Resources Agency. In all, 105 adult laurel dace were removed from dangerously dry streams and successfully relocated to the Tennessee Aquarium Conservation Institute (TNACI) near downtown Chattanooga.

All but one of the collected fish survived the relocation and are now thriving in temporary human care, where they will remain until conditions in their few native streams are sufficiently improved for them to be returned safely.

This laurel dace (Chrosomus saylori) was among dozens other collected from a stream on Walden Ridge north of Chattanooga to save the fish from drought. In the last 12 years, this minnow’s range has drastically dwindled to just two streams, and scientists consider it one of North America’s 10 most imperiled fish species.