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Water-Year Summary for Site 12137800

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
00010 Temperature, water(Max.,Min.,Mean)  
00060 Discharge(Mean)  
00065 Gage height(Mean)  

Water year 2024: 2024-10-01 to 2025-09-30
 
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USGS Water-Year Summary 2024
12137800 SULTAN RIVER BELOW DIVERSION DAM, NEAR SULTAN, WA
LOCATION - Lat 47°57'34", long 121°47'46" referenced to North American Datum of 1927, in SE 1/4 NE 1/4 sec.32, T.29 N., R.8 E., Snohomish County, WA, Hydrologic Unit 17110009, on right bank 1000 ft downstream from City of Everett diversion dam on Sultan River, 6.8 mi north of Sultan, and at mile 9.4.
DRAINAGE AREA - 77.1 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - May 1983 to current year.
GAGE - Water-stage recorder and square notch sharp-crested weir in gate of dam. Datum of gage is 600.00 ft above NGVD of 1929 (City of Everett). Prior to Oct. 1, 1989, recording gage at site 350 ft downstream at different datum, Mar. 16 to Sept. 21, 1993, Jan. 7-10, 1994, Feb. 18 to Sept. 21, 1995, Dec. 3-7, 1995, Mar. 14 to Sept. 3, 1996, Mar. 13 to June 24, 1997, recording gage at site 1,200 ft downstream, at different datum.
REMARKS - Flow regulated at Spada Lake (station 12137300) since Apr. 5, 1965. Since May 1984, water is diverted at Spada Lake through a 10-ft diameter pipeline for power generation at the Jackson Project, and for municipal water supply at Lake Chaplain. Since July 1984, undetermined flows are returned to river at diversion dam by pipeline from Lake Chaplain for maintenance of instream flow requirements. U.S. Geological Survey satellite telemeter at station.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 19,000 ft³/s, Nov. 24, 1990, gage height, 63.79 ft, from rating curve extended above 3,200 ft³/s; minimum daily, 35 ft³/s, Aug. 23-25, 1983.
WATER-QUALITY RECORDS
PERIOD OF RECORD - WATER TEMPERATURE: October 2009 to current year.
INSTRUMENTATION - Temperature recorder with 15-min logging interval.
REMARKS - U.S. Geological Survey satellite telemeter at station.
EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum, 17.0°C, Sept. 2, 2023; minimum, 0.9°C, Jan. 28, 2013.