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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.
PROVISIONAL DATA SUBJECT TO REVISION |
Station Number |
Station name | Date/Time |
Gage height, feet |
Tide stage, feet |
Dis- charge, ft3/s |
Temper- ature, water, deg C |
Specif- ic conduc- tance, wat unf uS/cm @ 25 degC |
Precipitation in inches during the previous 1 hour 4 hours 12 hours 24 hours | |||
---|---|---|---|---|---|---|---|---|---|---|---|
MERRIMACK RIVER BASIN | |||||||||||
01095220 | STILLWATER RIVER NEAR STERLING, MA | 12/27 01:30 EST | 4.28 | -- | 15.6 | 0.2 | 157 | 0 | 0 | 0 | 0 |
01095375 | QUINAPOXET RIVER AT CANADA MILLS NEAR HOLDEN, MA | 12/27 01:30 EST | 6.62 | -- | 13.6 | 0.0 | 356 | 0 | 0 | 0.03 | 0.03 |
01095434 | GATES BROOK NEAR WEST BOYLSTON, MA | 12/27 01:20 EST | Ice | -- | Ice | 1.1 | 979 | ||||
011006988 | MERRIMACK RIVER AT BATES BRIDGE NEAR HAVERHILL, MA | 12/27 01:42 EST | -- | 1.07 | 7,320 | -- | -- | ||||
011008745 | MERRIMACK R ESTUARY US OF SHAD CRK, SALISBURY, MA | ||||||||||
BOTTOM | 10/25 10:00 EDT | -- | -- | -- | 13.1 | 48,100 | |||||
TOP | 10/25 09:30 EDT | -- | -- | -- | 12.9 | 44,200 | |||||
MYSTIC RIVER BASIN | |||||||||||
422302071083801 | FRESH POND IN GATE HOUSE AT CAMBRIDGE, MA | 12/27 01:45 EST | -- | -- | -- | -- | -- | 0 | 0 | 0 | 0 |
Fresh Pond Sonde | 12/27 01:45 EST | -- | -- | -- | 3.4 | 601 | |||||
CHARLES RIVER BASIN | |||||||||||
01104370 | STONY BROOK AT VILES STREET, NEAR WESTON, MA | 12/27 01:40 EST | 0.75 | -- | -- | 0.8 | 396 | ||||
12/27 00:40 EST | -- | -- | 4.71 | -- | -- | ||||||
01104415 | CAMBRIDGE RES., UNNAMED TRIB 2, NR LEXINGTON, MA | 12/27 01:30 EST | 0.61 | -- | -- | 1.8 | 1,550 | ||||
12/27 00:30 EST | -- | -- | 0.11 | -- | -- | ||||||
01104430 | HOBBS BK BELOW CAMBRIDGE RES NR KENDALL GREEN, MA | 12/27 01:30 EST | 0.18 | -- | 0.86 | -- | -- | 0 | 0 | 0 | 0 |
GATE HOUSE | 12/27 01:40 EST | -- | -- | -- | 1.3 | 677 | |||||
RESERVOIR OUTLET | 12/27 01:30 EST | -- | -- | -- | 2.6 | 630 | |||||
01104453 | STONY BROOK UNNAMED TRIB 2 NR WESTON STATION | 12/27 01:40 EST | -- | -- | -- | 2.2 | 562 | ||||
01104455 | STONY BROOK, UNNAMED TRIBUTARY 1, NEAR WALTHAM, MA | 12/27 00:40 EST | 3.19 | -- | 0.38 | 8.6 | 1,260 | ||||
01104460 | STONY BROOK AT RT 20 AT WALTHAM, MA | 12/27 01:40 EST | 4.86 | -- | -- | 1.1 | 553 | ||||
[(2)] | 12/27 01:10 EST | -- | -- | 8.50 | -- | -- | |||||
01104475 | STONY BROOK RES., UNNAMED TRIB 1, NEAR WESTON, MA | 12/27 01:30 EST | 0.45 | -- | 0.63 | 1.8 | 327 | ||||
CONNECTICUT RIVER BASIN | |||||||||||
01161280 | CONNECTICUT RIVER NEAR NORTHFIELD, MA | 12/27 01:05 EST | 12.94 | -- | -- | -- | -- | ||||
02/23 11:15 EST | -- | -- | -- | Dis | Dis | ||||||
[Discharge from Index Velocity] | 12/27 01:00 EST | -- | -- | 6,410 | -- | -- | |||||
CHICOPEE RIVER BASIN | |||||||||||
01173000 | WARE RIVER AT INTAKE WORKS NEAR BARRE, MA | 12/27 01:15 EST | 3.74 | -- | 63.0 | 0.1 | -- |