About this river
Big Slough is a 2.8 mile river near Tarpon Time Charters in Florida. Streamflow is measured at the USGS gauge Cocoplum Waterway at North Port FL (site 02299482). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
2007 to 2026
Big Slough typically runs highest in September, at a median 74 cfs, and lowest in April, at 7.2 cfs. The highest flow on record for any single day is 2,200 cfs, in 2017.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 9.8 | 4.5 to 17 | |
| February | 12 | 4.0 to 23 | |
| March | 8.8 | 2.1 to 20 | |
| April | 7.2 | 0.5 to 18 | |
| May | 8.4 | 1.9 to 17 | |
| June | 23 | 11 to 46 | |
| July | 42 | 23 to 86 | |
| August | 74 | 40 to 115 | |
| September | 74 | 40 to 151 | |
| October | 27 | 17 to 41 | |
| November | 14 | 7.3 to 25 | |
| December | 12 | 5.8 to 19 |
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 18 years of record. Statistics published by the US Geological Survey for Cocoplum Waterway at North Port FL (site 02299482). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
2 mapped launches sit in the mapped area of Big Slough, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Big Slough'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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