All normal LLELA facilities and activities are available as of noon on May 18!

The U.S. Army Corps of Engineers completed the maintenance work at the outlet ahead of schedule, and we are now open for fishing, camping, and other activities as normal. However, the water level in the river is still low. Check the release rate at the Lewisville Dam before you come, if you are counting on water in the river. Normal flow is 120-250 cfs, anything less is pretty dry.

LLELA Freshwater Mussel Checklist


Common Name

Scientific Name



Amblema plicata


Rock Pocketbook

Arcidens confragosus

Species of concern**

Asian Clam

Corbicula sp.

Invasive species

Texas Pigtoe

Fusconaia askewi

Species of concern**

Yellow Sandshell

Lampsilis teres


Fragile Papershell

Leptodea fragilis


Threehorn Wartyback

Obliquaria reflexa



Plectomerus dombeyanus



Potamilus purpuratus


Giant Floater

Pyganodon grandis


Western Pimpleback

Quadrula mortoni



Quadrula verrucosa


**Both the Rock Pocketbook and the Texas Pigtoe were listed at the Federal and State level as “species of concern.” Texas Pigtoe is ranked as imperiled due to restricted range and scarce populations. LLELA has a nice-sized population near the confluence of the Elm Fork with the original river channel. Conservation status was based on the 2005 Texas Comprehensive Wildlife Conservation Strategy.