USGS Water-Year Summary 2025
14184300 SOUTH SANTIAM RIVER AT UPPER SODA, OR
LOCATION - Lat 44°24'17.1", long 122°16'40.8" referenced to North American Datum of 1983, in SW 1/4 SW 1/4 sec.25, T.13 S., R.4 E., Linn County, OR, Hydrologic Unit 17090006, Willamette National Forest, on the right bank, 0.3 mi upstream of Soda Fork, and 0.2 mi southwest of Upper Soda.
DRAINAGE AREA - 41.6 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - August 2023 to current year (gage heights only).
GAGE - Water-stage recorder. Datum of gage is 1,370.67 ft above NAVD of 1988 determined by differential levels.
EXTREMES FOR PERIOD OF RECORD - Maximum gage height, 8.30 ft Sept. 27, 2023; minimum gage height, 8.01 ft Sept. 18-20, 24, 2023.
WATER-QUALITY RECORDS
PERIOD OF RECORD - WATER TEMPERATURE: August 2023 to current year.
INSTRUMENTATION - Temperature probe and data logger.
EXTREMES FOR PERIOD OF RECORD - WATER TEMPERATURE: Maximum, 18.6°C Aug. 2, 2024; minimum, 2.9°C Mar. 7, 2024.