Incident Overview
According to the pilot, while flying over a river at an altitude of about 100 feet above water and ground level, at 250 knots, the airplane impacted unmarked power line wires that spanned the river. The power line wires are clearly identified on the Visual Flight Rules Sectional Aeronautical Chart.
Pilot Actions and Outcome
The pilot immediately established a climb and returned to the airport without further incident. The airplane sustained substantial damage to the nose, left wing, and vertical stabilizer.
Mechanical Status
The pilot reported that there were no pre-impact mechanical failures or malfunctions that would have precluded normal operation.