South Fork Boise River below Anderson Ranch Dam


Photo by: Dylan Neild

The South Fork Boise River is a major tributary of the Boise River, and its confluence with the Boise River is inundated by the Arrowrock Reservoir. The 1,310-square mile basin is mountainous with an extensive network of perennial streams. A major portion of the basin is covered by timber. The USDA Forest Service administers about 80% of the total land area. Timber harvest, recreation, and grazing are major activities in the basin. Two major storage reservoirs, Anderson Ranch and Little Camas, provide for irrigation, recreation, and flood control.

WATER QUALITY
  • Passed water quality tests 60-95% of the time
  • Historical Status
  • This status is based on the latest sample, taken on . Snake River Waterkeeper updates the status of this beach as soon as test results become available. These results were posted to Swim Guide on at
For water quality icon legend, click:   
CURRENT WEATHER
16°C
Mostly clear
MONITORING FREQUENCY

South Fork Boise River below Anderson Ranch Dam is sampled from June 7th to August 30th

SOURCE INFORMATION

TBD

WATER QUALITY GRAPH

South Fork Boise River below Anderson Ranch Dam


WATER QUALITY
  • Passed water quality tests 60-95% of the time
  • Historical Status
  • This status is based on the latest sample, taken on . Snake River Waterkeeper updates the status of this beach as soon as test results become available. These results were posted to Swim Guide on at
For water quality icon legend, click:   
CURRENT WEATHER
16°C
Mostly clear
Photo by: Dylan Neild

The South Fork Boise River is a major tributary of the Boise River, and its confluence with the Boise River is inundated by the Arrowrock Reservoir. The 1,310-square mile basin is mountainous with an extensive network of perennial streams. A major portion of the basin is covered by timber. The USDA Forest Service administers about 80% of the total land area. Timber harvest, recreation, and grazing are major activities in the basin. Two major storage reservoirs, Anderson Ranch and Little Camas, provide for irrigation, recreation, and flood control.

MONITORING FREQUENCY

South Fork Boise River below Anderson Ranch Dam is sampled from June 7th to August 30th

SOURCE INFORMATION

TBD

WATER QUALITY GRAPH



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