Rivers in New Jersey
Ramapo River at Mahwah
Below flood stage
2.59ftStage
Observed Wed, Sep 23, 2:30 PM EDT
- Flood stage
- 8.00 ft
- Forecast crest
- 2.60 ftWed, Sep 23, 8:00 PM EDT
- Record crest
- 15.78 ft2011
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 12.00 ft |
| Moderate flood | 9.00 ft |
| Minor flood | 8.00 ft |
| Action | 7.50 ft |
- 12.00 ftMajor flooding along Route 202 and Route 17 intersection. Road closed. Flooding along Riverview Drive and along Halifax Road and Bridle Path Lane. Flooding on Brakeshoe Place, Brook Street and Catherine Avenue.
- 9.00 ftState Route 202 floods downstream. Moderate flooding along Route 202 and Route 17. Water into backyards. Minor flooding along Brakeshoe Place, Brook Street and Catherine Avenue.
- 8.00 ftMinor flooding along Route 202.
Flood outlook
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | 15% |
| Moderate flooding | 9% |
| Major flooding | 5% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.
Crest history
23 crests on NOAA’s list since 1903.
| # | Date | Stage |
|---|---|---|
| 1 | August 28, 2011 | 15.78 ft |
| 2 | October 16, 1955 | 12.53 ft |
| 3 | September 16, 1999 | 12.52 ft |
| 4 | May 29, 1968 | 11.87 ft |
| 5 | August 19, 1955 | 11.35 ft |
| 6 | March 7, 2011 | 11.16 ft |
| 7 | October 9, 1903 | 11.00 ft |
| 8 | August 28, 1971 | 10.76 ft |
| 9 | March 11, 2011 | 10.72 ft |
| 10 | December 21, 1973 | 10.50 ft |
| 11 | September 22, 1938 | 10.40 ft |
| 12 | January 25, 1979 | 9.90 ft |
| 13 | April 3, 2005 | 9.87 ft |
| 14 | October 13, 2005 | 9.85 ft |
| 15 | February 3, 1973 | 9.77 ft |
| 16 | April 17, 2011 | 9.55 ft |
| 17 | December 21, 1957 | 9.33 ft |
| 18 | November 12, 1995 | 8.88 ft |
| 19 | February 26, 1961 | 8.87 ft |
| 20 | December 11, 2003 | 8.80 ft |
| 21 | January 25, 1996 | 8.69 ft |
| 22 | January 5, 1982 | 8.40 ft |
| 23 | December 12, 2008 | 8.07 ft |
Most recent crests
- August 28, 2011: 15.78 ft
- April 17, 2011: 9.55 ft
- March 11, 2011: 10.72 ft
- March 7, 2011: 11.16 ft
- December 12, 2008: 8.07 ft
- October 13, 2005: 9.85 ft
- April 3, 2005: 9.87 ft
- December 11, 2003: 8.80 ft
- September 16, 1999: 12.52 ft
- January 25, 1996: 8.69 ft
Nearby
Upstream, downstream and the gauges around this one.
What this means
Forecasts by the Middle Atlantic River Forecast Center. Forecasts are issued routinely year-round.
Sources
Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.