Passaic River near Chatham, Morris County NJ (CAMN4)
Gage Location: Morris County, New Jersey	Site Location: Morris County, New Jersey
Latitude: 40.726	Longitude: -74.39	Elevation: 193.51 ft. MSL	Drainage Area: 100 Sq. Mi.
Minor Stage: 6 ft.	Moderate Stage: 7.2 ft.	Major Stage: 8.2 ft.
First Flood: 1903-10-11	Last Flood: 2011-09-09 Crest: 6.25 ft.	Datum change: 1937-10-01	Number of Floods: 81

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Date of Flood Crest(ft) Streamflow(cfs) Category Code 1903-10-11 7.2 2310 Moderate *** (E) (5 1905-01-09 8.3 3000 Major *** (E) (5 1907-03-18 8 2860 Moderate *** (E) (5 1910-03-04 7 2260 Minor *** (E) (5 1938-07-23 6.51 1840 Minor none 1938-09-21 6.86 1910 Minor none 1942-08-09 6.31 1470 Minor none 1942-08-16 7.32 2020 Moderate none 1942-12-31 6.21 1420 Minor none 1945-02-27 6.67 -9999 Minor (1) 1947-02-24 6.65 -9999 Minor (1) 1947-11-08 6.05 1220 Minor none 1947-11-12 6.35 1410 Minor none 1948-02-20 6.3 1100 Minor none 1949-01-01 6.78 1710 Minor none 1952-06-01 6.17 1290 Minor none 1955-08-14 6.3 1380 Minor none 1955-08-19 6.31 1390 Minor none 1961-02-22 6.59 -9999 Minor (1) 1961-02-27 6.17 1290 Minor none 1962-03-12 6.41 1450 Minor none 1967-03-07 6.22 1320 Minor none 1968-05-29 7.9 2560 Moderate none 1969-07-28 6.68 1640 Minor none 1970-04-02 6.37 1470 Minor none 1971-08-28 8.16 2540 Moderate none 1971-09-14 6.72 1610 Minor none 1971-09-18 6.79 1650 Minor none 1972-06-22 6.57 1520 Minor none 1972-11-08 7.22 1910 Moderate none 1973-02-02 6.82 1670 Minor none 1973-08-02 9.36 3380 Major none 1973-10-29 6.25 1330 Minor none 1973-12-21 6.36 1400 Minor none 1975-07-14 7.4 2020 Moderate none 1975-09-27 8.14 2520 Moderate none 1975-10-19 6.1 1240 Minor none 1977-03-22 6.35 1390 Minor none 1977-11-08 6.58 1520 Minor none 1978-01-10 6.57 1520 Minor none 1978-08-12 6.61 1540 Minor none 1979-01-27 6.4 1420 Minor none 1979-02-26 6.88 1710 Minor none 1979-05-25 6.2 1300 Minor none 1979-09-06 6.13 1260 Minor none 1980-03-25 6.32 1370 Minor none 1982-01-04 6.1 1240 Minor none 1982-02-03 6.01 1190 Minor none 1983-03-21 6.34 1380 Minor none 1983-04-10 6.24 1320 Minor none 1983-04-17 6.14 1260 Minor none 1983-12-14 6.67 1580 Minor none 1984-04-06 7.26 1930 Moderate none 1984-05-31 6.67 1580 Minor none 1984-07-07 6.04 1210 Minor none 1986-04-18 6.63 1550 Minor none 1987-04-04 6.04 1210 Minor none 1988-07-26 6.07 1220 Minor none 1989-09-20 6.26 1330 Minor none 1989-10-22 6.01 1190 Minor none 1990-10-13 6.12 1250 Minor none 1992-06-05 6.87 1700 Minor none 1993-03-26 6.08 1230 Minor none 1993-04-01 6.13 1260 Minor none 1994-01-30 7.02 1970 Minor none 1996-01-19 6.38 1400 Minor none 1996-01-27 6 1180 Minor none 1996-10-21 7.49 2080 Moderate none 1996-12-07 6.08 1230 Minor none 1998-05-11 6.19 1290 Minor none 1999-09-17 7.6 2210 Moderate none 2003-02-24 6.36 1408 Minor none 2005-04-02 6.07 1240 Minor none 2005-10-10 6.11 1260 Minor none 2005-10-12 6.66 1590 Minor none 2007-04-17 7.45 2110 Moderate none 2010-03-15 7.91 2420 Moderate none 2010-03-30 6.34 1400 Minor none 2011-03-11 6.41 1620 Minor none 2011-08-29 7.76 2620 Moderate none 2011-09-09 6.25 1510 Minor none

MARFC Codes
Code Description
(!!!) Datum changed during this year.
(1) Backwater Effect.
(2) 15.77 ft also occurred on 11/25/1950 but only counted as one flood.
(3) Estimated from currrent USGS rating table.
(4) Estimated height from the USGS.
(5) Gage height at a different site and/or datum
(6) Discharge affected by Regulation or Diversion
(7) Due to changes, prior floods were based on present flood stage. Therefore, flood data could possibly be incomplete.
(8) Gage is a staff gage and not the offical USGS gage. Therefore, some floods may be missing from our study.
(9) Discharge effected by snow-melt, ice jam or debris jam break up
(A) Discharge affected to unknown degree by regulation or diversion.
(B) Month or day of occurrence is unknown or not exact.
(C) All or part of the record affected by urbanization, mining, agricultural changes, channelization, or other factors.
(D) Crest height adjusted to current datum.
(E) Estimated discharge.
(F) Only annual maximum peak available for this year.
(O) This flood occurred at a previous flood stage that is lower than the current flood stage. This is only a historical flood.
** Crest information looks reasonable despite potential problems. This data was used in our study.
*** Crest information looks unreliable and incomplete and was not used in our flood frequency study.
**** Gauge was discontinued in 2004. 2004 and later was not used in our study.
none No code

Updated: 08:58 AM Jun 28, 2012