World Weather/Climate Extremes Website

North America: Greatest Average Annual Precipitation

Record Value 7 meters (276") per year (highest 7.982 m; lowest 4.900 m) over the period of record (1923-1935; 1998-2000)
Averaging Period 15 years
Length of Record 1923-1935; 1998-2000 (Henderson Lake Hatchery)
Instrumentation manual raingauge
Geospatial Location Henderson Lake, British Colombia [49°88'N, 125°08'W, elevation: 3.66 m (12 ft)]

References

Environment Canada (Dr. David Phillips and Malcolm Geast)

Discussion

Because of relative uncertainty in comparative measurements over time of record, this record is averaged to the value of 7 meters per year. Greater accuracy (e.g. to the nearest millimeter) is not suggested.

Henderson Lake, British Colombia [48°08'N, 125°08'W, elevation: 35 m (115 ft)]

Closeup and Regional Satellite Images of Henderson Lake, British Colombia

Henderson Lake, British Colombia [48°08'N, 125°08'W, elevation: 35 m (115 ft)]

Closeup and Regional Satellite Images of Henderson Lake, British Colombia