USGS Water-Year Summary for Site 01104410

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	Available Parameters
	00010 Temperature, water(Mean)
	00060 Discharge(Mean)
	00095 Specific cond at 25C(Mean)

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Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023

01104410 CAMBRIDGE RES., UNNAMED TRIB 1, NR LEXINGTON, MA

LOCATION - Lat 42°26'11", long 71°15'53" referenced to North American Datum of 1927, Middlesex County, MA, Hydrologic Unit 01090001, on dirt road, 300 feet east of power lines, 500 ft upstream of Cambridge Reservoir, and 2.1 mi. southwest of Lexington.

DRAINAGE AREA - 0.35 mi².

SURFACE-WATER RECORDS

PERIOD OF RECORD - March 1997 to September 1998; November 2011 to October 2015 (discontinued).

GAGE - Water-stage recorder, downloaded manually.

COOPERATION - City of Cambridge, Water Department.

REMARKS - Records fair except those for estimated daily discharges, which are poor.

WATER-QUALITY RECORDS

PERIOD OF DAILY RECORD - March 1997 to September 1998; November 2011 to current year.

INSTRUMENTATION - Specific conductance and water temperature water-quality monitor.

REMARKS - EXTREMES FOR 2016 WATER-YEAR (min/max info): WATER TEMPERATURE: Maximum instantaneous water temperature: 23.8 °C on Jul. 01, 2016; Minimum instantaneous water temperature: 0.0 °C on Dec. 29, 2015 and many other days throughout the winter. SPECIFIC CONDUCTANCE: Maximum instantaneous specific conductance: 8,670 µS/cm on Feb. 16, 2016; Minimum instantaneous specific conductance: 80 µS/cm on Jul. 10, 2016 (new extreme for period of record). Records for water temperature are rated as excellent. Records for specific conductance are rated as excellent except for following daily ranges: 2015/11/14 to 2015/12/05, 2015/12/08 to 2015/12/10, 2015/12/31, 2016/03/21, 2016/04/04 to 2016/04/05, 2016/04/07, 2016/07/10, and 2016/08/10 which are rated as good; and 2015/12/06 to 2015/12/07 which are rate poor. EXTREMES FOR 2015 WATER-YEAR (min/max info): WATER TEMPERATURE: Maximum instantaneous water temperature: 25.2 °C on Aug. 04, 2015; Minimum instantaneous water temperature: 0.0 °C on Nov. 26, 2014 and many other days throughout the winter. SPECIFIC CONDUCTANCE: Maximum instantaneous specific conductance: 8,550 µS/cm on Dec. 09, 2014; Minimum instantaneous specific conductance: 88 µS/cm on Aug. 21, 2015. Records for water temperature are rated as excellent. Records for specific conductance are rated as excellent except for following daily ranges: 2014/10/01 to 2014/10/22, 2014/10/25 to 2015/03/12, 2015/03/17, 2015/03/21, 2015/04/15 to 2015/04/20, 2015/04/22 to 2015/06/16, 2015/08/21, and 2015/09/30 which are rated as good; and 2015/04/21 which are rated as fair. 2014 WATER-YEAR SUMMARY (min/max info): WATER TEMPERATURE: Maximum instantaneous water temperature: 25.0 °C on Jul. 02, 2014; Minimum instantaneous water temperature: 0.0 °C on Nov. 21, 2013 and many other days throughout the winter. SPECIFIC CONDUCTANCE: Maximum instantaneous specific conductance: 10,400 µS/cm on Dec. 09, 2013; Minimum instantaneous specific conductance: 97 µS/cm on Aug. 31, 2014. Record quality is described in the following publication: Wagner, R.J., Boulger, R.W., Jr., Oblinger, C.J., and Smith, B.A., 2006, Guidelines and standard procedures for continuous water-quality monitors—Station operation, record computation, and data reporting: U.S. Geological Survey Techniques and Methods 1–D3, 51 p. + 8 attachments; accessed April 10, 2006, at http://pubs.water.usgs.gov/tm1d3

EXTREMES FOR PERIOD OF DAILY RECORD - Water Temperature: 27.2 °C on Aug. 9, 2012; minimum, 0.0 °C on Jan. 3, 2012 and many other days throughout the winter. Specific conductance: maximum recorded, 13,400 µS/cm on Dec. 17, 2012; minimum, 80 µS/cm on July 10, 2016.