Around here
Around Tuolumne River
Temperature from a 1980 federal survey. The record says nothing about access, ownership or current conditions.
Data Source: Recreation.gov · Source: USGS GNIS · Thermal springs: NOAA NCEI (1980) · 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
Tuolumne River is a 39.7 mile river. Streamflow is measured at the USGS gauge Tuolumne R at Modesto CA (site 11290000). The National Hydrography Dataset places it at stream order 8. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1940 to 2026
Tuolumne River typically runs highest in February, at a median 996 cfs, and lowest in August, at 266 cfs. The highest flow on record for any single day is 52,900 cfs, in 1997.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 834 | 361 to 1,780 |
| February | 996 | 354 to 2,750 |
| March | 799 | 326 to 3,320 |
| April | 715 | 325 to 2,990 |
| May | 720 | 260 to 2,970 |
| June | 316 | 193 to 2,295 |
| July | 274 | 175 to 470 |
| August | 266 | 179 to 392 |
| September | 272 | 192 to 522 |
| October | 579 | 289 to 867 |
| November | 479 | 275 to 1,075 |
| December | 737 | 303 to 1,630 |
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 86 years of record. Statistics published by the US Geological Survey for Tuolumne R at Modesto CA (site 11290000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Made to print
Put Tuolumne 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 Tuolumne 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.
