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Around South Branch Rahway River
Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US
About this river
South Branch Rahway River is a 4.4 mile stream near Misty Morn Fishing Boat in New Jersey. Streamflow is measured at the USGS gauge Rahway River at Rahway NJ (site 01395000). The National Hydrography Dataset places it at stream order 4. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1922 to 2026
South Branch Rahway River typically runs highest in March, at a median 42 cfs, and lowest in September, at 11 cfs. The highest flow on record for any single day is 5,440 cfs, in 2011.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 26 | 15 to 45 |
| February | 30 | 18 to 57 |
| March | 42 | 25 to 80 |
| April | 35 | 22 to 61 |
| May | 28 | 17 to 51 |
| June | 19 | 10 to 35 |
| July | 14 | 7.2 to 30 |
| August | 12 | 6.0 to 28 |
| September | 11 | 5.0 to 23 |
| October | 11 | 5.2 to 23 |
| November | 17 | 8.9 to 31 |
| December | 21 | 12 to 46 |
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 104 years of record. Statistics published by the US Geological Survey for Rahway River at Rahway NJ (site 01395000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
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Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show South Branch Rahway 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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