USGS Water-Year Summary 2024

15087700

LOCATION - Lat 57°03'12", long 135°18'52" referenced to North American Datum of 1927, in SE 1/4 SW 1/4 NE 1/4 sec.36, T.55 S., R.63 E., City & Borough of Sitka, AK, Hydrologic Unit 19010212, on Baranof Island, in Tongass National Forest, on right bank 500 ft upstream from Sawmill Creek Road, 600 ft downstream from Sheldon Jackson College Diversion, and 0.6 mi above mouth.

DRAINAGE AREA - 12.1 mi².

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 1998 to September 2003; February 2016 to current year.

GAGE - Water-stage recorder. Elevation of gage is 30 ft above sea level, from topographic map.

REMARKS - GOES satellite telemetry at station. Flow is diverted 600 ft upstream to Sheldon Jackson College. No estimated daily discharge.

WATER-QUALITY RECORDS

PERIOD OF RECORD - Water years 1967-68, January 2001 to September 2002, February 2016 to current year.

PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: July 2001 to September 2002. WATER TEMPERATURE: May 2001 to September 2002, February 2016 to current year.

INSTRUMENTATION - Electronic water temperature from May 16, 2001 - September 30, 2002 and February 2016 to current year, recorder set to 15 minute recording interval. Specific conductance recorder July 24, 2001 to September 30, 2002.

REMARKS - Based on comparisons to water temperature recorded by the monitor and water temperature variability in the stream cross-section, water temperature at this site is well-mixed.

EXTREMES FOR PERIOD OF RECORD - SPECIFIC CONDUCTANCE: Maximum recorded, 62 us/cm, August 25, 2001; minimum recorded, 16 us/cm August 12, 2002. WATER TEMPERATURE: Maximum recorded, 12.6°C, July 18, 2016; minimum recorded, 0.0°C March 7,10, and 11 2017.