A while back, one of the gates broke on the Folsom Lake Dam out here in
California. Some "less then bright" state park rangers went out to shoo
a boater from the area (which was entirely safe for them). However,
the ranger boat engine failed to start up. Their boat was drawn through
the dam flood gate and plunged 100Ft. or so down to the river bed.
The rangers bailed out over the side and swam for safety.

b.