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Around North Fork Whetstone River
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Data Source: Recreation.gov · Public land: USGS PAD-US
About this river
North Fork Whetstone River is a 31.3 mile river. Streamflow is measured at the USGS gauge Whetstone River near Big Stone City, SD (site 05291000). The National Hydrography Dataset places it at stream order 5. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1910 to 2026
North Fork Whetstone River typically runs highest in April, at a median 87 cfs, and lowest in January, at 5.3 cfs. The highest flow on record for any single day is 13,700 cfs, in 2023.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 5.3 | 2.6 to 15 |
| February | 6.2 | 2.7 to 17 |
| March | 45 | 14 to 131 |
| April | 87 | 34 to 225 |
| May | 44 | 18 to 121 |
| June | 29 | 9.5 to 92 |
| July | 16 | 4.6 to 40 |
| August | 7.8 | 2.8 to 24 |
| September | 6.0 | 2.3 to 16 |
| October | 7.8 | 3.4 to 21 |
| November | 10 | 4.3 to 26 |
| December | 7.8 | 3.8 to 22 |
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 98 years of record. Statistics published by the US Geological Survey for Whetstone River near Big Stone City, SD (site 05291000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
3 mapped launches sit in the mapped area of North Fork Whetstone River, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.
- Kasuske Public Water AccessPublic
- Big Stone - Hartford Beach State ParkPublic
- FosterBig Stone LakePublic
Made to print
Put North Fork Whetstone River 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 North Fork Whetstone 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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