Delaware River Pedal & Paddle (Reservation only. No walk ins)
South Branch Raritan River near Delaware River Pedal & Paddle (Reservation only. No walk ins)
About this river
South Branch Raritan River is an 8.4 mile river near Delaware River Pedal & Paddle (Reservation only. No walk ins) in Pennsylvania. Streamflow is measured at the USGS gauge South Branch Raritan River near High Bridge NJ (site 01396500). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1919 to 2025
South Branch Raritan River typically runs highest in March, at a median 161 cfs, and lowest in September, at 45 cfs. The highest flow on record for any single day is 3,830 cfs, in 2011.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 100 | 70 to 164 | |
| February | 112 | 79 to 168 | |
| March | 161 | 115 to 231 | |
| April | 152 | 108 to 220 | |
| May | 115 | 85 to 169 | |
| June | 73 | 56 to 110 | |
| July | 56 | 41 to 81 | |
| August | 50 | 35 to 78 | |
| September | 45 | 32 to 68 | |
| October | 47 | 35 to 80 | |
| November | 70 | 45 to 122 | |
| December | 97 | 62 to 163 |
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 107 years of record. Statistics published by the US Geological Survey for South Branch Raritan River near High Bridge NJ (site 01396500). 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 Raritan 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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