RedactedNarrative: Both vessels were heading south with vessel 1 approximately 35-40 yards ahead and to the left of vessel 2.  Vessel 1 made a sharp turn to the right where here jet ski stalled for a brief second directly in front of vessel 2.  Vessel 2 operator tried to reduce his throttle to avoid the crash, but by reducing it he lost some steering power and was unable to manuever his jet ski.  Vessel 2 crashed into the center of the starboard side of vessel 1.  The two occupants of vessel 1 were ejected into the water from the impact.  The operator of vessel 2 was ejected and thrown over the handle bars and the vessel 1.  The occupants of vessel 1 were injured and taken to an area hospital.  The operator of vessel 2 refused treatment.
NameOfBodyOfWater: Carlyle Lake
NearestCityTown: Boulder                       