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USGS Water-Year Summary 2024
01036390 PENOBSCOT RIVER AT EDDINGTON, ME
LOCATION - Lat 44°49'36", long 68°41'48" referenced to North American Datum of 1983, Penobscot County, ME, Hydrologic Unit 01020005, on left bank 0.4 mi downstream from former Veazie Dam at Eddington, on Monument Drive, and 750 ft north of intersection with State Route 178.
DRAINAGE AREA - 7,515 mi² of which -,249 mi² probably is noncontributing. Drainage area is 7,764 mi², including 249 mi² drained by Chamberlain Lake through Telos Canal.
REVISIONS HISTORY - Erroneous unit-value discharge record from September 23-30, 2002 was removed on July 27, 2023.
SURFACE-WATER RECORDS
PERIOD OF RECORD -
GAGE HEIGHT: October 1998 to current year.
DISCHARGE: April 1979 to September 1996.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 7.20 ft above National Geodetic Vertical Datum of 1929.
REMARKS - Gage height affected by regulation of many reservoirs above station. Gaps in the record indicate missing data.
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum gage height, 23.53 ft, Apr. 3, 1987.
EXTREMES FOR PERIOD OF RECORD - Maximum gage height, 19.58 ft, May 1, 2008; minimum gage height, 0.46 ft, Aug. 29, 2002.
WATER-QUALITY RECORDS
PERIOD OF RECORD - CHEMICAL ANALYSES: Water years 1979 to August 1994.
PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: April 1979 to October 1984, seasonal records November 1984 to September 1994. August 2007 to September 2013 (discontinued).
pH: April 1979 to October 1984, seasonal records November 1984 to September 1994. August 2007 to September 2013 (discontinued).
WATER TEMPERATURE: April 1979 to October 1984, seasonal records November 1984 to September 1994. August 2007 to September 2015 (discontinued).
DISSOLVED OXYGEN: April 1979 to October 1984, seasonal records November 1984 to September 1994. August 2007 to September 2013 (discontinued).
TURBIDITY: August 2007 to September 2013 (discontinued).
INSTRUMENTATION - In-situ thermistor located on left bank, 1.5 ft above river bed. Water quality in-situ monitor from August 2007 to September 2013. Monitor located 150 ft streamward from left bank, 1.5 ft above river bed. (April 1979 to October 1984 continuous flow through system with submersible pump located at current monitoring location.)
REMARKS - Gaps in the record indicate missing data.
Water Year 2015: Records fair.
Water Year 2014: Records fair.
EXTREMES FOR PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: Maximum, 132 microsiemens/cm, Sept. 20, 1986; minimum, 16 microsiemens/cm, Feb. 5, 2008.
pH: Maximum, 9.3 standard units, Sept. 6, 1979; minimum, 5.3 standard units, Sept. 6-7, 1979.
WATER TEMPERATURE: Maximum, 28.9°C, July 16, 2013; minimum, -0.2°C, on many days during winter period in 2009.
DISSOLVED OXYGEN: Maximum, 16.5 mg/L, Dec. 14, 16 2009; minimum, 6.5 mg/L, July 17-18, 1980.
TURBIDITY: Maximum daily mean, 20 FNU, December 14, 2010, and November 1, 2012; minimum, 0.0 FNU on many days, 2007 through 2013.
