In the spring of 2015 I went to "Crappie University" at Richland. One of the lectures was from a couple of TPWD's biologists, and they said that both White Rock and Bachman had abundant crappie populations. In the winter a lot of folks (sometimes a whoooole lot) fish the first 3/4 mile of creeks above NW Highway. You also might take a look in the bank fishing section of this forum.
When in doubt, set the hook