(ISSW1) ISSAQUAH CREEK − NEAR MOUTH Station Summary

ISSAQUAH CREEK − NEAR MOUTH (ISSW1)

   State: Washington
   County: King
   Latitude: 47 33' 9" North
   Longitude: 122 2' 49" West
   Elevation: 36 ft

   Supporting NWS Forecast Office: WFO Seattle
   Click for NWS Official River Forecasts for ISSW1


   Action Flow: 1340 cfs (9.03 ft)
   Flood Flow: 2000 cfs (10.69 ft)
   Moderate Flood Flow: 2300 cfs (11.37 ft)
   Major Flood Flow: 2800 cfs (12.45 ft)

Daily Historical Statistics for March 12, 2026 Mean Stage: 5.04 ft Mean Flow: 212 cfs Max Stage: 6.72 ft Max Flow: 679 cfs (1971) Min Stage: 4.20 ft Min Flow: 50 cfs (1993) Statistics based on water years: 1964-2025 * statistics estimated based on current rating

Record Stage: 14.69 ft
Record Flow: 3200 cfs
Date of Record: January 9, 1990

The 4-10 Day Trend Forecast is based on model guidance and uncertainty during this period is greater.

Data Used In Plot

USGS Observations