Date of Flood Crest(ft) Streamflow(cfs) Category Code 1937-11-14 5.13 1900 Minor C1 1938-01-25 5.15 1900 Minor C1 1938-07-24 5.43 2120 Minor C1 1938-09-22 5.55 2260 Minor C1 1940-03-15 5.76 2390 Minor C1 1947-11-09 5.01 1790 Minor C1 1948-12-31 6.3 3590 Moderate C1 1950-11-26 5.07 1990 Minor C1 1950-12-08 5.06 1980 Minor C1 1951-03-31 5.59 2460 Minor C1 1951-12-21 5.07 1990 Minor C1 1952-03-12 5.83 2540 Minor C1 1952-06-02 6.62 4360 Moderate C1 1952-11-22 5.28 2050 Minor C1 1953-01-25 5.1 1890 Minor C1 1955-08-19 5.43 2190 Minor C1 1955-10-16 5.15 1940 Minor C1 1957-12-21 5.31 2080 Minor C1 1962-03-13 5.07 1860 Minor C1 1968-05-29 6.22 3400 Moderate C1 1970-04-03 6.06 2870 Moderate C1 1971-08-28 6.28 3550 Moderate C1 1972-06-01 5.4 2200 Minor C1 1972-06-23 5.29 2090 Minor C1 1972-11-09 6.21 3380 Moderate C1 1973-02-03 6.5 4100 Moderate C1 1973-12-21 6.59 4300 Moderate C1 1975-07-25 5.43 2230 Minor C1 1976-01-28 5.08 1900 Minor C1 1976-07-01 5.75 2550 Minor C1 1977-03-23 6.45 3970 Moderate C1 1977-11-08 5.02 1810 Minor C1 1978-03-27 5.75 2590 Minor C1 1979-01-08 5.06 1850 Minor C1 1979-01-25 7.06 5430 Major C1 1979-03-07 5.14 1920 Minor C1 1979-09-07 5.42 2200 Minor C1 1980-03-22 5.81 2670 Minor C1 1980-04-10 5.32 2100 Minor C1 1980-04-29 5.14 1920 Minor C1 1981-05-12 5.26 2040 Minor C1 1982-01-05 5 1780 Minor C1 1983-03-19 5.48 2230 Minor C1 1983-03-22 5.03 1800 Minor C1 1983-04-16 6.11 3030 Moderate C1 1983-12-14 5.52 2270 Minor C1 1984-04-05 7.23 5590 Major C1 1984-05-30 5.59 2350 Minor C1 1984-07-07 5.94 2770 Minor C1 1986-04-17 5.06 1830 Minor C1 1987-04-05 5.74 2530 Minor C1 1989-05-06 5.27 2020 Minor C1 1989-05-17 5.59 2350 Minor C1 1989-10-21 5.11 2010 Minor C1 1990-05-17 6.09 3350 Moderate C1 1992-06-06 5.38 2310 Minor C1 1996-01-20 5.2 2110 Minor C1 1996-01-28 5.65 2660 Minor C1 1996-10-20 5.92 3070 Minor C1 1996-12-02 5.23 2140 Minor C1 1998-06-14 5.33 2720 Minor C1 1999-03-22 5.2 2110 Minor C1 1999-09-17 6.26 4270 Moderate C1 2000-08-13 5.02 2750 Minor C1 2003-01-29 6.78 4980 Moderate C1 2003-02-04 6.33 5914 Moderate C1 2005-03-29 5.47 2530 Minor C1 2005-04-03 6.33 3640 Moderate C1 2005-10-09 6.1 3320 Moderate C1 2007-04-16 6.69 4170 Moderate C1 2008-02-14 5.46 2510 Minor C1 2008-03-09 5.41 2460 Minor C1 2008-12-12 5.42 2470 Minor C1 2009-12-27 5.13 2140 Minor C1 2010-01-26 5.14 2160 Minor C1 2010-03-14 6.81 4350 Moderate C1 2010-03-23 5.38 2420 Minor C1 2010-03-31 5.53 2600 Minor C1 2010-10-01 5.33 2370 minor C1 2011-03-07 6.32 3620 Moderate C1 2011-03-11 7.03 4700 Major C1 2011-04-17 6.23 3500 Moderate C1 2011-05-19 5.51 2570 Minor C1 2011-08-28 9.31 -9999 Major C1 2011-09-07 5.13 2140 Minor C1 2011-09-08 5.49 2550 Minor C1 2011-11-24 5.09 1420 Minor C1

Codes and description

C1|Crest information looks unreliable and incomplete and not used in frequency calculations. Some of the floods are based on current flood stage and nearby gage information.
C2|Crest information looks reliable despite potential problems. This data was used in frequency calculations.
C3|Crest height estimated by the USGS.
C4|Crest height is from the National Weather Service.
C5|Crest height affected by backwater.
C6|Crest occurred at a previous flood stage that is lower than the current flood stage. The crests below the new flood stage are not used in flood frequency calculations.
C7|Crest from USGS yearly peak and/or date is different than the crest we provide. In many cases MARFC uses crest based on backwater or ice effects.
C8|Crest month or day of occurrence has been estimated by The Middle Atlantic River Forecast Center usually based on nearby gage information.
C9|Crest date (day) in the month is unknown.
F1|Flow is an estimate.
F2|Flow affected by regulation or diversion and in some cases to an unknown degree.
F3|Flow effected by snow-melt, ice jam or debris jam break up.
F4|Flow affected by dam failure.
F5|Flow - All or part of the record affected by urbanization, mining, agricultural changes, channelization or other factors.
G1|Gage height at a different site and/or datum.
G2|Gage is not an official USGS gage with crests provided by the NWS. Crest information looks unreliable and incomplete and not used in flood frequency calculations.
G3|Gage datum changed during this year.
none,No code; Good Data

Updated: 01:27 PM Feb 21, 2013