The pilot reported that, he entered the traffic pattern, downwind, and that the airplane's airspeed was too fast, and the altitude was too high. The pilot decided to continue the landing and the airplane touched down about mid-field on the 1700ft runway. The pilot tried to use aerodynamic braking, but the airplane overran the end of the runway and collided with a drainage culvert.
The airplane sustained substantial damage to the left side elevator and the rudder.
The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.