I haven't been there since September, so the water level has gone up a bit since then, but I would imagine you would still have a half mile to a mile of walking from Tejas to get to the lake.
There's some reasonably pretty hillcountry creekbed between the camp and the lake if you're into fly-fishing small perch in small pools. The lake itself has a bad reputation for being fishless and insofar as it has a whitebass run it's said to be a week later than everywhere else.
If you've got a boat you should launch from the lake itself and work some of the fish attractors they sunk out there. There's GPS locations for them somewhere on the web.