Lake Murray is about 1 1/2 hours from Oklahoma City. Surface conditions in the summer get into the 80?s. Diving below the Thermocline can get into the 60?s in the summer. The bottom composition is very silty. On the weekends the more popular sites get very stirred up. Although access is a bit of a goat trail down to the water, diving at the old tower is the choice of most divers.