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Around Ramapo River
Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US
About this river
Ramapo River is a 27.9 mile river near SouthStar Charters NJ / NY in New Jersey. Streamflow is measured at the USGS gauge Ramapo River at Suffern NY (site 01387420). The National Hydrography Dataset places it at stream order 5. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1979 to 2026
Ramapo River typically runs highest in March, at a median 224 cfs, and lowest in September, at 18 cfs. The highest flow on record for any single day is 9,600 cfs, in 2011.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 136 | 88 to 249 |
| February | 152 | 90 to 243 |
| March | 224 | 141 to 359 |
| April | 199 | 121 to 330 |
| May | 131 | 79 to 231 |
| June | 56 | 23 to 129 |
| July | 27 | 16 to 61 |
| August | 20 | 13 to 50 |
| September | 18 | 13 to 55 |
| October | 36 | 15 to 105 |
| November | 93 | 40 to 188 |
| December | 164 | 87 to 310 |
Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 46 years of record. Statistics published by the US Geological Survey for Ramapo River at Suffern NY (site 01387420). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Ramapo River's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
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