Around here
Around Rock River
Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US
About this river
Rock River is a 62.1 mile river near Paddle Boyz Kayak Rental in South Dakota. Streamflow is measured at the USGS gauge Rock River below Tom Creek at Rock Rapids, IA (site 06483290). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
2001 to 2026
Rock River typically runs highest in June, at a median 534 cfs, and lowest in January, at 78 cfs. The highest flow on record for any single day is 31,800 cfs, in 2024.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 78 | 42 to 212 |
| February | 87 | 45 to 182 |
| March | 326 | 126 to 843 |
| April | 400 | 192 to 922 |
| May | 509 | 260 to 959 |
| June | 534 | 257 to 1,125 |
| July | 226 | 103 to 549 |
| August | 125 | 66 to 269 |
| September | 80 | 49 to 227 |
| October | 111 | 51 to 511 |
| November | 110 | 61 to 334 |
| December | 99 | 57 to 299 |
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 25 years of record. Statistics published by the US Geological Survey for Rock River below Tom Creek at Rock Rapids, IA (site 06483290). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
One mapped launch sits in the mapped area of Rock River. Ramp data comes from the USGS national boat-ramp inventory.
- Rollings Public Water AccessPublic
Made to print
Put Rock 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 Rock River'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.
