Maximum width is 52 inches or less, the trails are too narrow to benavigated by larger ATV's. Joseph Meagher and Hunter Spencer have a water gun fight Friday at Lake Keystone. An official website of the United States government. Riprap around the lake has degraded over time due to ice and erosion. Water levels in Lake Ogallala will be lowered in September while a coffer dam is installed at the lake in front of NPPDs canal diversion gates and the south river gates. WOW: Keystone Lake Reaches Record High Level. [CDATA[/* >