2026-01-04T17:00:00-07:00
The National Weather Service in Denver has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Sunday morning through Sunday afternoon. * AFFECTED AREA...Fire Weather Zones 214, 216, 239, 240 and 241. * TIMING...From late Sunday morning through Sunday afternoon. * WINDS...West 10 to 20 mph with gusts 30 to 45 mph. * RELATIVE HUMIDITY...12 to 18%. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire.
Summary
Total streamflow across the
Tuolumne River
was last observed at
739
cfs, and is expected to yield approximately
1,466
acre-ft of water today; about 100%
of normal.
Average streamflow for this time of year is
739 cfs,
with recent peaks last observed
on
2023-05-26 when daily discharge volume was observed at
51,230 cfs.
Maximum discharge along the river is currently at the
Tuolumne R A Grand Cyn Of Tuolumne Ab Hetch Hetchy
reporting a streamflow rate of 739 cfs.
However, the streamgauge with the highest stage along the river is the
Tuolumne R A Modesto Ca
with a gauge stage of 37.53 ft.
This river is monitored from 6 different streamgauging stations along the Tuolumne River, the highest being situated at an altitude of 3,831 ft, the
Tuolumne R A Grand Cyn Of Tuolumne Ab Hetch Hetchy.
River Details
| Last Updated | 2026-01-02 |
| Discharge Volume | 1,466 ACRE-FT |
| Streamflow |
739.0 cfs
-84.0 cfs (-10.21%) |
| Percent of Normal | 100.0% |
| Maximum |
51,230.0 cfs
2023-05-26 |
| Seasonal Avg | cfs |
River Streamflow Levels
| Streamgauge | Streamflow | Gauge Stage | 24hr Change (%) | % Normal | Minimum (cfs) | Maximum (cfs) | Air Temp | Elevation |
|---|---|---|---|---|---|---|---|---|
|
Tuolumne R A Grand Cyn Of Tuolumne Ab Hetch Hetchy
USGS 11274790 |
739 cfs | 10.69 ft | 79.81 | |||||
|
Tuolumne R Nr Hetch Hetchy Ca
USGS 11276500 |
60 cfs | 2.98 ft | 6.62 | |||||
|
Tuolumne R Ab Early Intake Nr Mather Ca
USGS 11276600 |
215 cfs | 13.14 ft | 210.69 | |||||
|
Tuolumne R Bl Early Intake Nr Mather Ca
USGS 11276900 |
208 cfs | 4.2 ft | 209.06 | |||||
|
Tuolumne R Bl Lagrange Dam Nr Lagrange Ca
USGS 11289650 |
233 cfs | 4.64 ft | 0 | |||||
|
Tuolumne R A Modesto Ca
USGS 11290000 |
410 cfs | 37.53 ft | -0.49 |
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile
The river has a rich history, having been home to indigenous communities for thousands of years and later serving as a vital transportation route during the California Gold Rush. Today, the river is used for agricultural irrigation and hydropower generation. It is also home to several reservoirs and dams, including the Don Pedro Dam, the New Don Pedro Reservoir, and the Hetch Hetchy Reservoir. These provide drinking water to the San Francisco Bay Area and irrigation water to the Central Valley. The Tuolumne River is also popular for recreational activities such as fishing, camping, hiking, and whitewater rafting.