Predominant fish species found in Lake Georgetown include Largemouth bass, smallmouth bass, catfish, and white & hybrid striped bass.
Lake Georgetown contains a high density largemouth bass population. The size structure of this fish population has improved considerably since implementation of the 14 – 18 inch slot length limit in September 1993. Several catches of largemouth over 10 pounds were documented in 1999 and 2000. A moderately low-density smallmouth bass population seems limited to the lower end of the reservoir. The reservoir also has a good white bass population with runs occurring up the North Fork of the San Gabriel River in the spring (February-May). Hybrid striped bass have been stocked annually since 2003. A fishery for this species will develop in coming years. Lake Georgetown also supports a low-density white crappie population. Blue, channel, and flathead catfish are present in the reservoir.
Largemouth bass anglers have their best success on this reservoir during the spring and fall. During the hot summer months, largemouth bass anglers will experience greater success fishing at night. In the lower section of the reservoir where the water generally remains clear, topwater lures, metal flake willowleaf spinnerbaits, and shallow- to medium-depth crankbaits work well along rocky banks. Do not be surprised to catch a few smallmouth bass using this technique. In mid and upper sections of the reservoir, casting jigs, soft/hard jerkbaits, and spinnerbaits to wood or rock cover might bring strikes from hungry largemouth bass.
Starting in February, white bass begin their annual spawning run up the North Fork of the San Gabriel River. Productive lures for white bass include twister tail jigs, small hair jigs, small crankbaits, and small topwaters. Live bait fishing with minnows is also productive. Catfish anglers can find channel, blue, and flathead catfish throughout the reservoir. Stinkbaits and cutbaits work well for the blues and channels, while live bait is preferred for large flathead catfish.
Info courtesy of Texas Parks and Wildlife Department