The venomous western diamondback rattlesnake, and coral snake exist in the park.

Common birds sighted in the park include northern cardinal, northern mockingbird, white-winged dove, Inca dove, black vulture, red-tailed hawk, house finch, Carolina chickadee, black-crested titmouse, and chipping sparrow.

Endangered golden-cheeked warbler nest in the backcountry of the park each spring and summer.

Some plants documented in the park include chinkapin oak, plateau live oak, scaly-bark oak, pecan, cedar elm, honey mesquite, Buckley's yucca, frostweed, Mormon tea, agarita, tasajillo, Spanish dagger, Texas sotol and prickly pear cactus.

[4] The park draws visitors for water sports such as tubing, swimming, canoeing and kayaking.