Operator was cruising along the east end of the dam at Carlyle Lake. As he cruised in front of the dam westward, Operator came up on the concrete/rock ledge on the west side of the dam. Operator struck the ledge at about 45 MPH breaking the lower unit off his outboard motor. Operator said he was not familiar with Carlyle Lake. The lake level at the time was approximately 443.00. At this level there is approximately 12 - 18 inches of water over the ledge along the west side of the dam. Operator had Isaak''s come out and tow his boat in.  There were no charges filed against Operator.
Carlyle                       