Around here
Around Flat Brook
Data Source: Recreation.gov · Source: USGS GNIS · Source: National Park Service. No claim to original U.S. Government works. · Public land: USGS PAD-US
About this river
Flat Brook is an 11.5 mile river near Kayak East LLC in Pennsylvania. Streamflow is measured at the USGS gauge Flat Brook near Flatbrookville NJ (site 01440000). The National Hydrography Dataset places it at stream order 5. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1924 to 2026
Flat Brook typically runs highest in March, at a median 163 cfs, and lowest in September, at 23 cfs. The highest flow on record for any single day is 6,310 cfs, in 1955.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 90 | 59 to 146 |
| February | 101 | 68 to 151 |
| March | 163 | 107 to 249 |
| April | 149 | 102 to 225 |
| May | 104 | 74 to 167 |
| June | 61 | 40 to 96 |
| July | 33 | 23 to 62 |
| August | 25 | 16 to 48 |
| September | 23 | 14 to 46 |
| October | 28 | 16 to 66 |
| November | 61 | 29 to 124 |
| December | 90 | 51 to 156 |
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 103 years of record. Statistics published by the US Geological Survey for Flat Brook near Flatbrookville NJ (site 01440000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Made to print
Put Flat Brook on your wall
This river section as an art print, drawn over the real terrain with its miles, plus the trails, roads and peaks around it. Pick the colors and the size, and see the finished print before you buy. From $39, shipping included.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Flat Brook's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
See every free widget you can put on your site, including live conditions and a 7 day forecast.
