Wilson Canyon is a gorge cut by the Walker River through a series of volcanic cliffs.
[1] The canyon runs through the Singatse Range in Lyon County, where the Walker River flows northeast into the Mason Valley.
These heavy rainstorms melted most of the snowpack below 7,000 feet (2,100 m) elevation, including that at the headwater of the Walker River.
This, plus additional heavy rain between 7,000–10,000 feet (2,100–3,000 m), increased the amount of runoff from the mountains, with the consequence being the worst flood western Nevada had seen in 150 years.
Large portions of Route 208 were destroyed, with pieces of roadway being found in the river after the flood subsided.