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USGS 01104430 HOBBS BK BELOW CAMBRIDGE RES NR KENDALL GREEN, MA

PROVISIONAL DATA SUBJECT TO REVISION

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LOCATION--Middlesex County, Hydrologic Unit 01090001, on right bank, 50 ft downstream of culvert at Winter Street, 300 ft downstream of gate house outlet from Cambridge Reservoir, and 1.3 mi north of Kendal Green.
DRAINAGE AREA--6.86 mi2.
PERIOD OF RECORD--July 1997 to current year.
GAGE--Data Collection Platform, water-temperature and specific conductance monitor, air temperature monitor, and a heated tipping-bucket precipitation gage equipped with a wind shield. Elevation of gage is 150 ft above sea level (from topographic map). Telephone telemeter at station. Datum of gage is referenced to the City of Cambridge datum, subtract 10.84 feet to elevations to adjust to National Geodetic Vertical Datum of 1929. Dissolved chloride and sodium concentrations estimated from specific conductance measurements using the regression technique described in Smith 2013.
REMARKS--Flow affected by regulation of dam 300 ft upstream at outflow of Cambridge Reservoir.
COOPERATION BY--Cambridge Water Department

Daily and unit values precipitation data are calibrated and quality assured prior to publication by the Massachusetts-Rhode Island Water Science Center. Data are available upon request.

Photo of Hobbs Brook Streamflow and Precipitation Gages

Available Parameters Available Period
All 15 Available Parameters for this site
  
00010 Temperature, water 2007-10-01  2019-06-25
00010 Temperature, water, GATE HOUSE 2015-09-10  2019-06-25
00020 Temperature, air 2007-10-01  2019-06-25
00045 Precipitation 2009-10-23  2019-06-25
00060 Discharge 1997-10-01  2019-06-25
00062 Elevation, reservoir, GATE HOUSE 2007-10-01  2019-06-25
00065 Gage height 2007-10-01  2019-06-25
00095 Specific cond at 25C 2007-10-01  2019-06-25
00095 Specific cond at 25C, GATE HOUSE 2015-09-10  2019-06-25
00300 Dissolved oxygen, GATE HOUSE 2015-09-10  2019-06-25
62361 Chlorophyll, in situ, GATE HOUSE 2015-09-10  2019-06-25
63680 Turbidity, Form Neph, GATE HOUSE 2015-09-10  2019-06-25
72022 Reservoir storage, GATE HOUSE 2010-10-01  2019-06-25
99398 Sodium, wf, estim. 2012-05-17  2019-06-25
99404 Chloride, wf, estim 2009-10-23  2019-06-25

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


Temperature, water, degrees Celsius

Most recent instantaneous value: 20.7 06-25-2019   23:30 EDT
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Temperature, water, degrees Celsius, GATE HOUSE

Most recent instantaneous value: 20.6 06-25-2019   23:45 EDT
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Temperature, air, degrees Celsius

Most recent instantaneous value: 19.8 06-25-2019   23:30 EDT
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Precipitation, total, inches

Most recent instantaneous value: 0.00 06-25-2019   23:30 EDT
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Discharge, cubic feet per second

Most recent instantaneous value: 1.36 06-25-2019   23:30 EDT
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Daily discharge, cubic feet per second -- statistics for Jun 26 based on 21 years of record more
Min
(2017)
Most Recent
Instantaneous
Value Jun 26
25th
percen-
tile
Mean Median 75th
percen-
tile
Max
(2004)
0.96 1.36 5.3 14 15 22 27.7


Elevation of reservoir water surface above datum, feet, GATE HOUSE

Most recent instantaneous value: 182.43 06-25-2019   23:45 EDT
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Gage height, feet

Most recent instantaneous value: 0.29 06-25-2019   23:30 EDT
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Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius

Most recent instantaneous value: 862 06-25-2019   23:30 EDT
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Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius, GATE HOUSE

Most recent instantaneous value: 848 06-25-2019   23:45 EDT
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Dissolved oxygen, water, unfiltered, milligrams per liter, GATE HOUSE
 
-- Data temporarily unavailable for the time period specified --

Chlorophyll, total, water, fluorometric, 650-700 nanometers, in situ sensor, micrograms per liter, GATE HOUSE
 
-- Data temporarily unavailable for the time period specified --


Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU), GATE HOUSE

Most recent instantaneous value: -0.0 06-25-2019   23:30 EDT
Graph of  Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)

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Reservoir storage, million gallons, GATE HOUSE

Most recent instantaneous value: 2723.4 06-25-2019   23:45 EDT
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Sodium, water, filtered, estimated by regression equation, milligrams per liter

Most recent instantaneous value: 121 06-25-2019   23:30 EDT
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Chloride, water, filtered, estimated by regression equation, milligrams per liter

Most recent instantaneous value: 220 06-25-2019   23:30 EDT
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