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Peak Streamflow for Massachusetts

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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.


USGS 01097000 ASSABET RIVER AT MAYNARD, MA

Middlesex County, Massachusetts
Hydrologic Unit Code 01070005
Latitude  42°25'55", Longitude  71°27'01" NAD27
Drainage area 116  square miles
Contributing drainage area 116  square miles
Gage datum 146 feet above NAVD88
Output formats
Table
Graph
Tab-separated file
peakfq (watstore) format
Reselect output format
Water
Year		 Date Gage
Height
(feet)		 Stream-
flow
(cfs)
1942 1942-03-19 5.00 9605
1943 1943-03-21 4.79 8805
1944 1944-04-26 4.34 6435
1945 1945-03-07 4.88 9195
1946 1946-03-09 5.16 1,1005
1947 1947-03-05 4.29 6565
1948 1948-03-21 5.75 1,4605
1949 1949-02-24 3.75 4825
1950 1950-03-25 4.43 7545
1951 1951-02-19 4.72 9205
1952 1951-11-09 4.93 1,0205
1953 1953-03-17 5.12 1,1205
1955 1955-08-20 8.94 4,2505
1956 1956-01-11 5.48 1,3805
1957 1957-04-07 4.18 6965
1958 1958-01-28 5.38 1,3205
1959 1959-04-04 5.26 1,2505
1960 1960-04-01 5.35 1,3005
1961 1961-04-18 5.01 1,0405
1962 1962-04-02 5.99 1,6705
1963 1963-03-28 6.12 1,7605
1964 1964-03-07 4.48 8215
1965 1965-02-27   5302,5
1966 1966-03-06   4002,5
1967 1967-05-27 4.92 1,0105
1968 1968-03-19 8.15 3,6205
1969 1969-03-27 6.02 1,6905
1970 1970-02-12 6.14 1,7805
1971 1971-03-17 4.51 8995
1972 1972-03-23 5.89 1,5905
1973 1973-02-04 5.20 1,1605
1974 1974-03-23 4.65 8305
1975 1975-02-26 5.02 1,0305
1976 1976-01-28 5.01 1,0305
1977 1977-03-15 5.37 1,2505
1978 1978-03-29 5.63 1,4205
1979 1979-01-26 8.11 3,4205
1980 1980-03-23 4.85 1,0205
1981 1981-02-27 4.51 8575
1982 1982-06-07 6.68 2,3005
1983 1983-03-13 5.48 1,2605
1984 1984-06-03 6.25 1,7805
1985 1985-02-13 3.39 4035
1986 1986-03-16 5.46 1,3605
1987 1987-04-07 7.17 2,5805
1988 1988-03-28 4.09 6925
1989 1989-05-13 4.25 7395
1990 1990-04-05 4.33 7755
1991 1991-04-23 4.26 7795
1992 1991-11-24 3.95 6145
1993 1993-04-02 6.37 1,9605
1994 1994-03-24 5.19 1,3805
1995 1994-12-26 4.08 7845
1996 1996-01-29 5.55 1,6105
1997 1996-10-21 5.52 1,5905
1998 1998-03-11 5.61 1,5505
1999 1999-02-04 4.36 7895
2000 2000-04-24 5.62 1,5505
2001 2001-03-23 6.41 2,0905
2002 2002-05-15 3.94 6025
2003 2003-03-23 4.84 1,0405
2004 2004-04-02 5.95 1,7705
2005 2005-04-03 5.71 1,6505
2006 2005-10-16 5.52 1,5305
2007 2007-04-17 6.28 2,0405
2008 2008-03-09 5.77 1,5205
2009 2008-12-13 5.59 1,4105
2010 2010-03-31 7.11 2,5305
2011 2011-03-08 5.56 1,3905
2012 2011-12-09 4.85 9975
2013 2013-06-15 5.17 1,2105
2014 2014-04-01 5.71 1,5305
2015 2015-04-05 4.58 9255
2016 2016-04-09 3.91 6105
2017 2017-04-07 5.20 1,2405
2018 2018-04-18 4.84 1,0505
2019 2018-11-28 5.13 1,2005
2020 2020-04-05 4.33 8045
2021 2021-09-03 5.32 1,3005
2022 2022-02-19 4.45 8535
2023 2023-03-15 5.00 1,1305
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  Peak Streamflow Qualification Codes.