Around here
Around East Fork Rock Creek
Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US · Forest roads: USDA Forest Service MVUM · BLM routes and areas: Bureau of Land Management (simplified for web display)
About this river
East Fork Rock Creek is a 12.8 mile river near Montana Zipline Adventures in Montana. Streamflow is measured at the USGS gauge Middle Fork Rock Cr nr Philipsburg MT (site 12332000). The National Hydrography Dataset places it at stream order 5. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1938 to 2025
East Fork Rock Creek typically runs highest in June, at a median 431 cfs, and lowest in January, at 31 cfs. The highest flow on record for any single day is 1,480 cfs, in 1974.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 31 | 26 to 38 |
| February | 32 | 26 to 38 |
| March | 34 | 29 to 41 |
| April | 57 | 43 to 84 |
| May | 286 | 219 to 436 |
| June | 431 | 290 to 601 |
| July | 148 | 95 to 184 |
| August | 62 | 50 to 80 |
| September | 49 | 41 to 59 |
| October | 45 | 39 to 53 |
| November | 40 | 34 to 48 |
| December | 35 | 29 to 42 |
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 88 years of record. Statistics published by the US Geological Survey for Middle Fork Rock Cr nr Philipsburg MT (site 12332000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Made to print
Put East Fork Rock Creek 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 East Fork Rock Creek'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.
