SNAKE − BELOW SWAN FALLS (SWAI1)
   State:  Idaho
   County:  Ada
   Latitude:  43 17' 30" North
   Longitude:  116 25' 12" West
   Elevation:  2271 ft

   Supporting NWS Forecast Office: WFO Boise
   Click for NWS Official River Forecasts for SWAI1
Daily Historical Statistics for June 25, 2025
Mean Flow: 11100 cfs
Max Flow: 44000 cfs (1918)
Min Flow: 4250 cfs (2021)

Statistics based on water years: 1914-2023
* statistics estimated based on current rating

The 4-10 Day Trend Forecast is based on model guidance and uncertainty during this period is greater.

Hydrograph plot for SWAI1


For Data Used In Plot   "label