SNAKE − AT HELLS CANYON DAM (HCDI1)
   State:  Idaho
   County:  Adams
   Latitude:  45 15' 5" North
   Longitude:  116 41' 49" West
   Elevation:  1400 ft

   Supporting NWS Forecast Office: WFO Pendleton
   Click for NWS Official River Forecasts for HCDI1
   
Daily Historical Statistics for June 17, 2026
Mean Stage: 67.91 ft  Mean Flow: 22900 cfs
Max Stage: 75.31 ft  Max Flow: 63800 cfs (1984)
Min Stage:  62.03 ft   Min Flow: 5780 cfs (1977)

Statistics based on water years: 1966-2024
* 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 HCDI1

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Hydrograph plot for HCDI1

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Hydrograph plot for HCDI1

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Hydrograph plot for HCDI1

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