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USGS 01104460 STONY BROOK AT RT 20 AT WALTHAM, MA

PROVISIONAL DATA SUBJECT TO REVISION

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LOCATION--Lat 42o22'08", long 71o16'16", Middlesex County, Hydrologic Unit 01090001, 200 ft downstream of State Highway 20, 1,000 ft upstream from Stony Brook Reservoir, and 1.8 mi west of Waltham.
DRAINAGE AREA--22.0 mi2.
PERIOD OF RECORD--October 1997 to September 1998; August 2002 to current year.
GAGE--Data Collection Platform, water-temperature, specific conductance, pH, and turbidity water-quality monitor, with telephone telemeter. Datum of gage is 89.20 ft above NAVD 1988, estimated from topographic map. Datum of gage previously reported as 90 ft above NGVD 1929, estimated from topographic map.
REMARKS--Flow affected by regulation of dam 2.6 mi upstream on Hobbs Brook at outflow of Cambridge Reservoir.
COOPERATION BY--Cambridge Water Department

Available Parameters Available Period
  
2007-10-01  2021-10-21
2007-10-01  2021-10-21
2007-10-01  2021-10-21
2007-10-01  2021-10-07
2009-10-28  2021-10-07







 (7)
 

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Summary of all available data for this site
Instantaneous-data availability statement


Temperature, water, degrees Celsius

Most recent instantaneous value: 0.0 10-21-2021   17:40 EDT
Graph of  Temperature, water, degrees Celsius

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Discharge, cubic feet per second, [(2)]

Most recent instantaneous value: 18.6 10-21-2021   17:40 EDT
Graph of  Discharge, cubic feet per second, [(2)]

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Daily discharge, cubic feet per second -- statistics for Oct 21 based on 21 water years of record more
Min
(2014)
25th
percen-
tile
Most Recent
Instantaneous
Value Oct 21
Median Mean 75th
percen-
tile
Max
(2012)
3.37 11 18.6 20 26 28 138


Gage height, feet

Most recent instantaneous value: 5.16 10-21-2021   17:40 EDT
Graph of  Gage height, feet

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