RedactedNarrative: The sheriff's office received a call from the Regional Watercraft Safety Program Manager, U.S. Geological Survey, Water Resources Division. He wanted to report a watercraft accident that had occurred a month earlier (he had just been notified) while the watercraft was being used in conjunction with work contracted by the USGS. While returning from a field site, the boat started taking on water. While it was sitting low in the water, it was struck by a large wave, which caused water to be sucked into the engine, causing it to stall. The operator and passenger used the radio that the National Park Service had issued to them to call for help. The NPS was there within 20 minutes. Although the boat was filled with water, it remained buoyant. The boat was removed from the water the following day. It was determined that the plug was missing (although it had been put in place by the field crew before launching). There were no injuries, and the only damage was to the motor.