We use cookies for a variety of purposes, including to enhance your experience on our website and keep our sites reliable and secure. It is late February. A 2-foot drawdown started Sept. 15, and riprap will be added beginning Sept. 27. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. High water levels have left some areas closed at Lake Keystone. By using our sites, you agree to our use of cookies. Share sensitive information only on official, secure websites. Fishing activities near the Keystone Diversion at Lake Ogallala will not be available this fall as maintenance work on the gates of the Keystone Diversion Dam will be undertaken by Nebraska Public PowerDistrict (NPPD). [CDATA[/* > 7 A horn will sound when water releases begin and during the time water is being released. Video: See whats inside the Tulsa World Magazines summer edition. body {top:0 !important;} Sudden swift rises may occur when water is being released for power below the dam. Its significant. affected by ice at some streamgages. /*-->