Drought conditions during August, 2000 lowered Lewisville Lake from the normal 722 feet above sea level to 707 feet. Mussels normally under 10 feet of water were stranded on dry land and an easy meal for raccoons, birds, and other predators. Conditions were ideal for collecting and allowed us to record some of the species existing in this lake. All specimens collected were recently dead.
Freshwater mussels collected from the Elm Fork of the Trinity River, near Lewisville Lake
The Elm Fork of the Trinity River below Lewisville Lake is home to many of the same mussel species that are found in the lake, including Bleufer, Fragile Papershell, Louisiana Fatmucket, Southern Mapleleaf, Threeridge, Deertoe, Giant Floater, Lilliput and Asian Clams. Here are a few species that we found in the river that we did not find in the lake: Pistolgrip, Yellow Sandshell and Threehorn Wartyback. These were collected in shallow water about 5 miles below the lake, during October, November and December, 2000:
These specimens were collected as part of the Texas Parks & Wildlife Mussel Watch Program by Judy Lewis and John Caldeira.
A few links:
North Texas Conchological Society
John's Home Page
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This page was first published by John Caldeira, firstname.lastname@example.org during August, 2000. Updated January, 2005. Content on this web site may be used without permission for any non-profit purpose, except internet duplication. Higher-resolution photos available upon request.