RedactedNarrative: On 7/1/17 at approx. 6:45pm. 2 vessels were involved in a minor collision in Anderson Creek during the Elk River Boat Party.  V2 drifted into V1, which was at anchor.  See Accident photos for damage.  Before Lt. and I arrived on scene, V2 had left the area.  See operator and witness statements to reason.  No fatalities or injuries reported at scene.