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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2025
12184800 SKAGIT RIVER AT ROCKPORT, WA
LOCATION - Lat 48°29'06", long 121°35'36" referenced to North American Datum of 1927, Skagit County, WA, Hydrologic Unit 17110005,
DRAINAGE AREA - 1,245 mi²
SURFACE-WATER RECORDS
PERIOD OF RECORD - July 2023 to current year.
GAGE - Water-stage recorder. Datum of gage is 200 ft above NAVD of 1988 (USGS differential levels from WADOT BM).
REMARKS - Flow regulated for power generation on the Skagit River by Ross Reservoir (12175000), Diablo Reservoir (12176500) and Gorge Reservoir (12177700). U.S. Geological Survey satellite telemeter at station.
EXTREMES FOR PERIOD OF RECORD - Maximum gage height, 29.60 ft, Dec. 05, 2023. Minimum gage height, 16.38 ft, Aug. 22, and 24, 2023.
