USGS Water-Year Summary for Site 422302071083801

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	Available Parameters
	00010 Temperature, water(Mean)
	00020 Temperature, air(Mean)
	00045 Precipitation(Sum)
	00095 Specific cond at 25C(Mean)
	72022 Reservoir storage(Mean)

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Water year 2024: 2024-10-01 to 2025-09-30

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USGS Water-Year Summary 2024

422302071083801 FRESH POND IN GATE HOUSE AT CAMBRIDGE, MA

LOCATION - Lat 42°23'02", long 71°08'38" referenced to North American Datum of 1983, Middlesex County, MA, Hydrologic Unit 01090001, Fresh Pond, in gate house at Cambridge Water Department facility, State Highway 2, 1.5 mi northwest of Cambridge.

DRAINAGE AREA - Kettle pond, only local drainage to pond.

SURFACE-WATER RECORDS

PERIOD OF RECORD - RESERVOIR ELEVATION: March 2002 to current year. RESERVOIR STORAGE: March 2002 to current year.

GAGE - Water-stage recorder with telephone telemeter.

COOPERATION - Cambridge Water Department.

REMARKS - Records of reservoir elevation and reservoir storage are good. Periods of missing record are not estimated.

EXTREMES FOR PERIOD OF RECORD - RESERVOIR ELEVATION: Maximum recorded: 17.92 ft, June 16, 2010; minimum 13.27 ft, June 27, 2002. RESERVOIR STORAGE: Maximum recorded: 1,554 Mgal, June 16, 2010; minimum 1,362 Mgal, June 27, 2002.

CLIMATOLOGICAL RECORDS

PERIOD OF RECORD - AIR TEMPERATURE: March 2002 to current year. PRECIPITATION: June 2004 to current year.

INSTRUMENTATION - Air temperature is measured by an air temperature probe housed in a radiation shield. Precipitation is measured from a heated tipping-bucket precipitation gage.

EXTREMES FOR PERIOD OF RECORD - AIR TEMPERATURE: Maximum recorded, 36.9 °C; June 10, 2008, minimum , -22.0 °C, Jan. 16, 2004.

REMARKS - 2016 WATER-YEAR SUMMARY for air temperature (min/max info): Maximum instantaneous air temperature: 35.0 °C on Aug. 11, 2016 Minimum instantaneous air temperature: -21.6 °C on Feb. 14, 2016 2015 WATER-YEAR SUMMARY for air temperature (min/max info): Maximum instantaneous air temperature: 33.3 °C on Jul. 29, 2015 and Sept. 09, 2015 Minimum instantaneous air temperature: -20.3 °C on Jan. 16, 2015 Records are not rated. Daily precipitation totals for periods of missing records were estimated from nearby stations.

WATER-QUALITY RECORDS

PERIOD OF RECORD - SPECIFIC CONDUCTANCE: October 2003 to current year. WATER TEMPERATURE: October 2003 to current year.

COOPERATION - Cambridge Water Department.

INSTRUMENTATION - Specific conductance and water-temperature sensor.

REMARKS -

2016 WATER-YEAR SUMMARY (min/max info): WATER TEMPERATURE: Maximum instantaneous water temperature: 27.9 °C on Jul. 27, 2016; Minimum instantaneous water temperature: 0.6 °C on Jan. 24, 2016. SPECIFIC CONDUCTANCE: Maximum instantaneous specific conductance: 926 µS/cm on Sept. 29, 2016); Minimum instantaneous specific conductance: 686 µS/cm on May 30, 2016. Daily records for water temperature are rated good. Daily records for specific conductance are rated as excellent, except for the following daily ranges: 2016/07/25 to 2016/08/18, 2016/08/26 to 2016/08/31, 2016/09/09 to 2016/09/24, and 2016/09/26 which are rated good.

2015 WATER-YEAR SUMMARY (min/max info): WATER TEMPERATURE: Maximum instantaneous water temperature: 28.2 °C on Aug. 17, 2015; Minimum instantaneous water temperature: 1.1 °C on Jan. 10, 2015 and other days in January. SPECIFIC CONDUCTANCE: Maximum instantaneous specific conductance: 799 µS/cm on Sept. 30, 2015; Minimum instantaneous specific conductance: 615 µS/cm on Apr. 05, 2015.

2014 WATER-YEAR SUMMARY (min/max info): WATER TEMPERATURE: Maximum instantaneous water temperature: 27.3 °C on Jul. 22, 2014; Minimum instantaneous water temperature: 0.4 °C on Jan. 29, 2014. SPECIFIC CONDUCTANCE: Maximum instantaneous specific conductance: 704 µS/cm on Sept. 29, 2014; Minimum instantaneous specific conductance: 554 µS/cm on Oct. 06, 07, and 08, 2014.

2013 WATER-YEAR SUMMARY (min/max info): WATER TEMPERATURE: Maximum instantaneous water temperature: 29.4 °C on Jul. 17, 2013; Minimum instantaneous water temperature: 0.0 °C on Jan. 24, 2013. SPECIFIC CONDUCTANCE: Maximum instantaneous specific conductance: 587 µS/cm on Sept. 25, 2013; Minimum instantaneous specific conductance: 461 µS/cm on Feb. 09, 2013.

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 RECORD - SPECIFIC CONDUCTANCE: Maximum recorded, 926 µS/cm on Sept. 29, 2016; minimum, 393 uS/cm, Mar. 28, 2008. WATER TEMPERATURE: Maximum recorded, 29.4 °C on Jul. 17, 2013; minimum, -0.4 °C (rated fair) on Mar. 09, 2007.