USGS Water-Year Summary 2024
12450650 WELLS POWERPLANT HEADWATER NEAR PATEROS, WA
LOCATION - Lat 47°56'52", long 119°51'45" referenced to North American Datum of 1927, Chelan County, WA, Hydrologic Unit 17020005,
WATER-QUALITY RECORDS
PERIOD OF RECORD - WATER TEMPERATURE: April 2014 to September 2015 (continuous record). November 2015 to current year. (seasonal record)
INSTRUMENTATION - Water-quality monitor with a 15-minute logging interval.
EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Upper Sensor, Maximum recorded, 21.5°C, August 15, 2021; minimum recorded, 3.4°C, part of each day Feb. 5 – 7, 2015. WATER TEMPERATURE: Middle Sensor, Maximum recorded, 21.4°C, August 15, 2021; minimum recorded, 3.2°C, part of each day Feb. 5 – 7, 2015. WATER TEMPERATURE: Lower Sensor, Maximum recorded, 20.7°C, August 15, 2021; minimum recorded, 3.0°C, April 1, 2018