Peakflow Forecasts Header

SNAKE--JACKSON LAKE AT DAM
   State:  Wyoming    County:  TETON
   Latitude:  43 51' 29" North    Longitude:  110 35' 8" West
   Elevation:  6728 feet
   Supporting WFO:  Riverton    
   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.

SNAKE--JACKSON LAKE AT DAM   (JLKW4)
Forecasts for Water Year
2025
Ensemble Date: 2025-05-15
Forecast Period: May 15 to September 1
Exceedence
Probability
Inflow
CFS
Probable
Date of Peak
95 % 5106 2025-05-26
90 % 5144 2025-05-26
70 % 5499 2025-05-28
50 % 5990 2025-06-01
30 % 6719 2025-06-07
10 % 7692 2025-06-12
05 % 10079 2025-06-18

Peakflow exceedence plot for JLKW4

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