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ICE EFFECTS ON STREAMFLOW

The formation of ice on rivers can cause discharge values to appear unusually high. Display of these erroneous discharge data may result in improper assessment of flow conditions and misuse of the data. For this reason, display of discharge values for streams significantly affected by ice may be disabled from view. Display of discharge data will resume when ice conditions are no longer present. Discharge values for streams minimally affected by ice will continue to be displayed. Flows for streams with these conditions appear to increase during the night and decrease to near-base-line conditions around midday. To estimate the correct discharge for these streams, use the flow rate that corresponds to the bottom of the discharge curve, rather than the peak that corresponds to the top of the curve. Note that this method of estimation is possible only when no surface runoff is occurring. Daily mean discharges for periods of both significant and minimal ice-effect will be estimated and published in the Annual Water-Data Report for the water year in which they occurred.


Real-time Data for Cambridge Reservoir Sites -- 15 site(s) found

PROVISIONAL DATA SUBJECT TO REVISION




Customize table to display other current-condition parameters
Station
Number 		Station name Date/Time Reser-
voir
storage
Mgal 		Reser-
voir
eleva-
tion
above
datum,
feet 		Dis-
charge,
ft3/s 		Specif-
ic
conduc-
tance,
wat unf
uS/cm @
25 degC 		Temper-
ature,
water,
deg C 		Temper-
ature,
air,
deg C 		Precipitation in inches
during the previous
  24 hours  
01104370 STONY BROOK AT VILES STREET, NEAR WESTON, MA  04/24 17:40 EDT -- -- 21.0 271  13.3 --  
01104405 HOBBS BROOK AT MILL ST NR LINCOLN, MA  04/24 17:40 EDT -- -- -- 253  13.2 --  
01104410 CAMBRIDGE RES., UNNAMED TRIB 1, NR LEXINGTON, MA  04/24 17:30 EDT -- -- -- 880  12.4 --  
01104415 CAMBRIDGE RES., UNNAMED TRIB 2, NR LEXINGTON, MA  04/24 17:30 EDT -- -- 0.44 1,020  12.0 --  
01104420 CAMBRIDGE RES., UNNAMED TRIB 3, NR LEXINGTON, MA  04/24 17:30 EDT -- -- 1.21 -- -- --  
      25ft Downstream of pier  04/24 17:30 EDT -- -- -- 953  13.6 --  
01104425 HOBBS BRK AT TRAPELO RD AT LINCOLN, MA  04/24 17:45 EDT -- 182.41 -- 572  11.3 --  
01104430 HOBBS BK BELOW CAMBRIDGE RES NR KENDALL GREEN, MA  04/24 18:00 EDT -- -- 10.1 -- --  12.1 0.01 
      GATE HOUSE  04/24 17:45 EDT 2,728 182.46 -- 591  10.9 --  
      RESERVOIR OUTLET  04/24 18:00 EDT -- -- -- 588  10.3 --  
01104453 STONY BROOK UNNAMED TRIB 2 NR WESTON STATION  04/24 17:40 EDT -- -- -- 450  15.2 --  
01104455 STONY BROOK, UNNAMED TRIBUTARY 1, NEAR WALTHAM, MA  04/24 17:40 EDT -- -- 0.75 1,150  11.9 --  
01104460 STONY BROOK AT RT 20 AT WALTHAM, MA  04/24 18:10 EDT -- -- -- 455  13.3 --  
      [(2)]  04/24 18:10 EDT -- -- 47.4 -- -- --  
01104475 STONY BROOK RES., UNNAMED TRIB 1, NEAR WESTON, MA  04/24 17:30 EDT -- -- 1.45 255  12.7 --  
01104480 STONY BROOK RESERVOIR AT DAM NEAR WALTHAM, MA  04/24 18:10 EDT -- -- 36.1 -- -- --  
    04/24 17:40 EDT 416.9 80.91 -- -- --  11.8 0.02 
      Sensor at Reservoir Elev 73 ft, [Elevation 73 feet]  04/24 17:40 EDT -- -- -- 430  13.2 --  
422302071083801 FRESH POND IN GATE HOUSE AT CAMBRIDGE, MA  04/24 17:45 EDT 1,457 -- -- -- --  13.8 0 
      Fresh Pond Sonde  04/24 17:45 EDT -- -- -- 535  12.1 --  
      [(2)]  04/24 17:45 EDT -- 16.01 -- -- -- --  
422303071084301 FRESH POND BUOY, NEAR INTAKE AT CAMBRIDGE, MA 
      [0.5 ft below water surface]  10/24 10:45 EDT -- -- -- -- Ssn --  
422518071162501 CAMBRIDGE RES., MET. STATION, NEAR LEXINGTON, MA  04/24 17:45 EDT -- -- -- -- --  12.8 0 

Data status codes:
  --     Parameter not determined
  Ssn     Parameter monitored seasonally