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 October 30, 2025
Mean Stage: 24.02 ft  Mean Flow: 10500 cfs
Max Stage: 29.49 ft  Max Flow: 23100 cfs (1984)
Min Stage:  20.74 ft   Min Flow: 6370 cfs (2004)

Statistics based on water years: 1914-2025
* 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