Birch: May 23. Elevation above normal, water upper 60s and dirty. For current elevation conditions go to the U.S. Army Corps of Engineers website at https://www.swt-wc.usace. army.mil/BIRC.lakepage.html. Largemouth bass fair on crankbaits and plastic baits around brush structure and shallows. Crappie fair on jigs and minnows around brush structure. Report submitted by Jeremy Bersche, game warden stationed in Osage County.