About this river
Big Walnut Creek is a 37.5 mile river near Ohio Fly Fishing Guides in Ohio. Streamflow is measured at the USGS gauge Big Walnut Creek at Central College OH (site 03228500). The National Hydrography Dataset places it at stream order 5. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1955 to 2026
Big Walnut Creek typically runs highest in March, at a median 172 cfs, and lowest in December, at 114 cfs. The highest flow on record for any single day is 10,600 cfs, in 1959.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 120 | 100 to 157 | |
| February | 130 | 109 to 186 | |
| March | 172 | 118 to 358 | |
| April | 156 | 121 to 316 | |
| May | 149 | 123 to 228 | |
| June | 149 | 119 to 185 | |
| July | 145 | 118 to 169 | |
| August | 137 | 109 to 155 | |
| September | 127 | 102 to 145 | |
| October | 120 | 96 to 139 | |
| November | 116 | 93 to 131 | |
| December | 114 | 92 to 137 |
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 71 years of record. Statistics published by the US Geological Survey for Big Walnut Creek at Central College OH (site 03228500). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
8 mapped launches sit in the mapped area of Big Walnut Creek, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.
- Scioto River - Lower Scioto Park and Boat LaunchPublic
- Hoover Reservoir - Hoover MarinaBig Walnut CreekPublic
- Big Walnut Creek - Big Walnut TrailBig Walnut CreekPublic
- Hoover Sailing ClubBig Walnut CreekPublic
- Hoover Reservoir - Boat Stake Area DBig Walnut CreekPublic
- Hoover Reservoir - MaxtownBig Walnut CreekPublic
- Hoover Reservoir - Baldridge Boat RampBig Walnut CreekPublic
- Hoover Reservoir - Oxbow Road Launch RampBig Walnut CreekPublic
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Big Walnut Creek'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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