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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.
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- Not all sites have reports available for every water year.
USGS Water-Year Summary 2025
14208000 CLACKAMAS RIVER AT BIG BOTTOM, OR
LOCATION - Lat 45°01'01.5", long 121°55'24.7" referenced to North American Datum of 1983, in sec.26, T.6 S., R.7 E., Clackamas County, OR, Hydrologic Unit 17090011, Mt. Hood National Forest, on the right bank at lower end of Big Bottom, 0.5 miles downstream from Pot Creek, 28 miles southeast of Estacada, and at mile 65.1.
DRAINAGE AREA - 136 mi².
REVISIONS HISTORY - WSP 1218: Drainage area. WSP 1248: 1943.
SURFACE-WATER RECORDS
PERIOD OF RECORD - April 1920 to September 1970, August 2024 to current year. Monthly discharge only April 1920, published in WSP 1318.
GAGE - Water-stage recorder. Elevation of gage is 2,050 ft above NAVD of 1988, from digital elevation model. Prior to Dec. 27, 1962, at site 0.2 mile upstream at different datum.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 11,200 ft³/s Dec. 22, 1964, gage height 10.55 ft, from rating curve extended above 1,200 ft³/s on basis of slope-area measurement of peak flow; minimum, 184 ft³/s Sept. 12, 1942.
WATER-QUALITY RECORDS
PERIOD OF RECORD - WATER TEMPERATURE: June 2024 to current year.
INSTRUMENTATION - Temperature probe and data logger.
EXTREMES FOR PERIOD OF RECORD - WATER TEMPERATURE: Maximum, 13.4°C Aug. 2, 2024; minimum, 6.4°C Sept. 30, 2024.
