About this river
Rock Creek is a 2.1 mile stream near Idaho Whitewater Unlimited-IWU in Idaho. Streamflow is measured at the USGS gauge South Fork Payette River at Lowman, ID (site 13235000). The National Hydrography Dataset places it at stream order 4. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1942 to 2026
Rock Creek typically runs highest in June, at a median 2,505 cfs, and lowest in January, at 309 cfs. The highest flow on record for any single day is 8,900 cfs, in 1974.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 309 | 265 to 359 | |
| February | 311 | 277 to 371 | |
| March | 395 | 333 to 512 | |
| April | 955 | 627 to 1,275 | |
| May | 2,080 | 1,480 to 2,980 | |
| June | 2,505 | 1,695 to 3,280 | |
| July | 934 | 650 to 1,340 | |
| August | 462 | 376 to 592 | |
| September | 363 | 314 to 434 | |
| October | 342 | 307 to 400 | |
| November | 345 | 302 to 406 | |
| December | 316 | 273 to 380 |
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 85 years of record. Statistics published by the US Geological Survey for South Fork Payette River at Lowman, ID (site 13235000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Rock 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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