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Water-Year Summary for Site 15015595

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Available Parameters
00010 Temperature, water(Max.,Min.,Mean)  
00060 Discharge(Mean)  
00095 Specific cond at 25C(Min.,Max.,Mean)  
00300 Dissolved oxygen(Min.,Max.,Mean)  
00400 pH(Med.,Min.,Max.)  
63680 Turbidity, Form Neph(Mean,Max.,Min.)  

Water year 2019: 2019-10-01 to 2020-09-30
 

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USGS Water-Year Summary 2019
15015595 UNUK RIVER BELOW BLUE RIVER NEAR WRANGELL, AK
LOCATION - Lat 56°14'26", long 130°52'49" referenced to North American Datum of 1927, in NW 1/4 NW 1/4 NE 1/4 sec.16, T.65 S., R.94 E., Ketchikan Gateway Borough, AK, Hydrologic Unit 19010105, (Bradfield Canal A-3 quad), in Misty Fiords National Monument, on right bank 17 mi upstream from the Post (Bishop Ranch), near the mouth of Burroughs Bay and approximately 60 mi southeast of Wrangell.
DRAINAGE AREA - 745 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - April 2003 to September 2007, November 2017 to current year.
GAGE - Water-stage recorder. Elevation of gage is 130 ft above sea level, from topographic map.
REMARKS - Ice effected days are estimated daily discharges. Records fair. GOES satellite telemetry at station.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Water years 2003 to 2007. November 2017 to current year.
PERIOD OF DAILY RECORD -

WATER TEMPERATURE: April 2003 to September 2007, November 2017 to current year.

SPECIFIC CONDUCTANCE:  November 2017 to current year.

PH:  November 2017 to current year.

TURBIDITY:  November 2017 to current year.

DISSOLVED OXYGEN:  November 2017 to current year.

INSTRUMENTATION - Water-quality monitor recording Water Temperature, Specific Conductance, pH, Turbidity, and Dissolved Oxygen set at 15-minute recording interval.
REMARKS - River is well mixed at gage station.
EXTREMES FOR PERIOD OF DAILY RECORD -

WATER TEMPERATURE: Maximum recorded, 12.2°C, July 27, 2018; minimum recorded, 0.0°C, many days during most winter periods.

SPECIFIC CONDUCTANCE: Maximum recorded, 220 Us/cm, March 6, 2018; minimum recorded, 60 Us/cm, August 9, 2018.

pH: Maximum recorded, 8.5 September 14, 2018; minimum recorded, 7.3, May 22, 2018.

TURBIDITY: Maximum recorded, 1,080 FNU, August 10, 2018; minimum recorded, 0.1 FNU, February 20 and 23 2018, but may have been lower during period of missing record.

DISSOLVED OXYGEN: Maximum recorded, 14.8 mg/L, February 20, 2018; minimum recorded, 10.3 mg/L, June 29, 2018.