This is the time of year when the campgrounds close; check with the South Kaibab National Forest while planning your trip if you plan to camp at the lake. Only boats with a single electric motor are allowed on Whitehorse Lake. No gas-powered motors. The limit is 2 bass minimum size 13 inches, the limit is 4 channel catfish. Largemouth bass, bluegill, and black crappie activity will start to slow down as fall progresses