Peakflow Forecasts Header

ALSEA--NEAR TIDEWATER
   State:  Oregon    County:  LINCOLN
   Latitude:  44 23' 9" North    Longitude:  123 49' 50" West
   Elevation:  48 feet
   Supporting WFO:  Portland    
   Action Stage:  16'   Flood Stage:  18'   Moderate Flood Stage:  21'
   Major Flood Stage:  23'

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.

ALSEA--NEAR TIDEWATER   (TIDO3)
Forecasts for Water Year 2025
Ensemble Date: 2025-05-12
 Forecast Period: May 12 to September 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 2.67 509 2025-05-13
90 % 2.67 509 2025-05-13
70 % 2.67 509 2025-05-13
50 % 2.67 509 2025-05-13
30 % 2.98 652 2025-06-03
10 % 3.98 1224 2025-06-10
05 % 4.50 1573 2025-06-13

Peakflow exceedence plot for TIDO3

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