Peakflow Forecasts Header

YAAK--NEAR TROY
   State:  Montana    County:  LINCOLN
   Latitude:  48 33' 42" North    Longitude:  115 58' 9" West
   Elevation:  1839 feet
   Supporting WFO:  Missoula    
   Action Stage:  7.5'   Flood Stage:  8'   Moderate Flood Stage:  9'
   Major Flood Stage:  
10'

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.

YAAK--NEAR TROY   (TRYM8)
Forecasts for Water Year
2025
Ensemble Date: 2025-07-04
Forecast Period: July 4 to November 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 3.49 304 2025-07-06
90 % 3.49 304 2025-07-06
70 % 3.49 304 2025-07-06
50 % 3.49 304 2025-07-06
30 % 3.49 304 2025-07-18
10 % 3.63 368 2025-10-25
05 % 4.17 669 2025-10-30

Peakflow exceedence plot for TRYM8

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