INITIAL NOTIFICATION
On 8/21/2010, I was informed by the park seasonal working at Gunlock State Park that there had been a boat accident. He told me there didn't seem to be any injuries and that it had occurred in the north arm (Santa Clara River) of Gunlock Reservoir. I told park worker to gather as much accident information as he could and to have the operator/boat stay at the reservoir until I arrived. As I was on my way to the area, I was called by the operator and we agreed to meet in Ivins city for me to take the report.  
INVESTIGATION 
Upon meeting in Ivins, I began gathering all relevant boat accident information. I was told that as they were traveling up the north arm of the reservoir, they struck something very solid just under the water's surface. They said it appeared to be rocks or some kind of concrete refuse left in the channel. VESSEL #1 immediately began taking on water due to the hull damage and nearby boat was able to assist. They were able to locate the fin that was torn off as it was still lodged in the rocks/refuse that it struck. I took pictures of the damage to VESSEL #1 including the hull, propeller and propeller shaft, and the fin which was torn off from the bottom of the hull. The propeller and propeller shaft were severely bent. The interior or VESSEL #1 had been submerged in water including the engine and all electrical components. The pictures will be on file at Sand Hollow State Park with a copy of this report. I had the operator complete a witness statement about the incident which will be attached to this report. 

I learned that two passengers had been ejected from VESSEL #1 upon impact without injury and the operator had injured his R. arm/elbow upon impact as he struck the console. He said he was planning on stopping at a medical facility to have the injury checked out. I was told that VESSEL #1 was nearly submerged as it was being loaded onto the trailer. Another boater had assisted in towing VESSEL #1 to the dock to be loaded on it's trailer.

Gunlock Reservoir had been worked on a year previous by Washington County Water Conservancy District or sub-contracters. The north end of the reservoir had been dredged and inlet from the Santa Clara River had been widened and otherwise cleaned out providing access farther up the Santa Clara than in previous years. There may also be additional water access points on the Santa Clara River.  It is unknown whether it is or was meant to be safe for boat travel. This is also an area that has been subject to frequent flooding and illegal dumping.
 
TIME DETAIL;
Initial notification of accident - 1400 Hours
Accident according to operator - 1315 Hours
Meet with operator - 1500 Hours
Initial investigation complete - 1545 Hours

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