Peakflow Forecasts Header

SF FLATHEAD--HUNGRY HORSE DAM
   State:  Montana    County:  FLATHEAD
   Latitude:  48 20' 28" North    Longitude:  114 0' 47" West
   Elevation:  3560 feet
   Supporting WFO:  Missoula    
   Inflow Data  

Forecasts are calculated from a forecast time series that approximates flow at a 6 hour time step interval. Observed instantaneous peaks can be higher than model forecast peaks.

SF FLATHEAD--HUNGRY HORSE DAM   (HHWM8)
Forecasts for Water Year
2025
Ensemble Date: 2025-07-05
Forecast Period: July 5 to November 1
Exceedence
Probability
Inflow
CFS
Probable
Date of Peak
95 % 2577 2025-07-06
90 % 2577 2025-07-06
70 % 2577 2025-07-06
50 % 2577 2025-07-06
30 % 3547 2025-10-05
10 % 6150 2025-10-30
05 % 8914 2025-11-01

Peakflow exceedence plot for HHWM8

 Click to download runoff traces used in forecast.  Click for comma delimited data used in plot.csv icon