United States, Arkansas, Clark, DeGray Lake; Alpine Ridge Recreation Area; from Knox; 16 air miles SW of Hot Springs. UTM 15S/478219/3791384. Bismarck Quad T5S R21W S34 NE4
34.263371 -93.236591
15S 478219 3791384
Egeria densa infested lake with Hibiscus moscheutos, Cephalanthus occidentalis and Salix nigra.