Red Flag Warning
2025-12-20T00:00:00-07:00

...CRITICAL FIRE WEATHER CONDITIONS FRIDAY... Critical fire weather conditions over the northeast plains will gradually ease into this evening. Strong winds will redevelop in the foothills overnight, with high winds spreading slowly east across the nearby adjacent plains west of I-25 through the afternoon. Extremely high wind gusts of 85-100 mph combined with humidities dropping into the 10-20 percent range will create potential for fast moving wildfires, should any new starts occur. Winds toward I-25 and eastward will be slower to develop, and also speeds will be considerably lighter. That said, gusts of 25-40 mph are still expected to combine with very low humidity and cured grasses to support critical fire weather conditions. Areas farther east into eastern Adams, Arapahoe, Elbert, and Lincoln counties have more uncertainty if those winds even develop, so those locations remain under a Fire Weather Watch. Such conditions may be a longer duration than usual, with potential for low humidity to extend well into the evening hours. The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 10 AM Friday to midnight MST Friday night. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 238, 239, 240, 241 and 243. * TIMING...From 10 AM Friday to midnight MST Friday night. * WINDS...West 20 to 35 mph, with gusts up to 80 mph or more immediately next to the foothills. Gusts closer to 40 mph along and east of I-25. * RELATIVE HUMIDITY...As low as 8 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a fast moving wildfire.


Truckee River River Levels

Last Updated: December 18, 2025

The Truckee River is a 121-mile-long river located in California and Nevada.


Summary

Total streamflow across the Truckee River was last observed at 4,709 cfs, and is expected to yield approximately 9,339 acre-ft of water today; about 155% of normal. River levels are high. Average streamflow for this time of year is 3,040 cfs, with recent peaks last observed on 2017-05-06 when daily discharge volume was observed at 62,940 cfs.

Maximum discharge along the river is currently at the Truckee River Nr Mogul reporting a streamflow rate of 587 cfs. However, the streamgauge with the highest stage along the river is the Truckee River Nr Tracy with a gauge stage of 7.2 ft. This river is monitored from 13 different streamgauging stations along the Truckee River, the highest being situated at an altitude of 6,235 ft, the Truckee R A Tahoe City Ca.

River Details

Last Updated 2025-12-18
Discharge Volume 9,339 ACRE-FT
Streamflow 4,708.5 cfs
+784.5 cfs (+19.99%)
Percent of Normal 154.89%
Maximum 62,940.0 cfs
2017-05-06
Seasonal Avg 3,040 cfs
       
River Streamflow Levels
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Truckee R A Tahoe City Ca
USGS 10337500
76 cfs 2.65 ft -4.07
Truckee R Nr Truckee Ca
USGS 10338000
150 cfs 1.95 ft 52.59
Truckee R Bl Martis C Nr Truckee Ca
USGS 10339410
235 cfs 4.07 ft 67.86
Truckee R A Boca Bridge Nr Truckee Ca
USGS 10344505
500 cfs 6.49 ft 28.21
Truckee R A Farad Ca
USGS 10346000
549 cfs 4.21 ft 34.23
Truckee River Nr Mogul
USGS 10347460
587 cfs 6.25 ft 41.11
Truckee R At Reno
USGS 10348000
525 cfs 4.74 ft 18.78
Truckee R Nr Sparks
USGS 10348200
452 cfs 5.66 ft 14.14
Truckee R At Vista
USGS 10350000
485 cfs 4.38 ft 6.36
Truckee River Nr Tracy
USGS 10350340
482 cfs 7.2 ft 2.99
Truckee R Bl Derby Dam Nr Wadsworth
USGS 10351600
217 cfs 2.47 ft 6.9
Truckee R At Wadsworth
USGS 10351650
235 cfs 4.49 ft 9.81
Truckee R Nr Nixon
USGS 10351700
216 cfs 3.36 ft 1.41
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile

The Truckee River is a river in the U.S. states of California and Nevada. The river flows northeasterly and is 121 miles (195 km) long. The Truckee is the sole outlet of Lake Tahoe and drains part of the high Sierra Nevada, emptying into Pyramid Lake in the Great Basin. Its waters are an important source of irrigation along its valley and adjacent valleys.