Red Flag Warning
2025-12-22T17:00:00-07:00

...CRITICAL FIRE WEATHER TODAY... .Near record temperatures today, combined with another period of gusty westerly winds in and near the Front Range foothills will lead to critical fire weather conditions, especially from the Boulder county foothills south into South Park and the Palmer Divide. The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 8 AM this morning to 5 PM MST this afternoon. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 239 and 241. * TIMING...From 8 AM this morning to 5 PM MST this afternoon. * WINDS...West 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 9 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire.


FRIO RIVER

Last Updated: December 22, 2025

Get the latest River Levels, Streamflow, and Hydrology for in River flows across 4 streamgages of the Frio River


Summary

Total streamflow across the Frio River was last observed at 26 cfs, and is expected to yield approximately 52 acre-ft of water today; about 121% of normal. River levels are high. Average streamflow for this time of year is 22 cfs, with recent peaks last observed on 2025-07-15 when daily discharge volume was observed at 11,590 cfs.

Maximum discharge along the river is currently at the Frio Rv At Concan reporting a streamflow rate of 26.4 cfs. This is also the highest stage along the Frio River, with a gauge stage of 3.51 ft at this location. This river is monitored from 4 different streamgauging stations along the Frio River, the highest being situated at an altitude of 1,235 ft, the Frio Rv At Concan.

River Details

Last Updated 2025-12-22
Discharge Volume 52 ACRE-FT
Streamflow 26.4 cfs
0.0 cfs (0.0%)
Percent of Normal 120.82%
Maximum 11,590.0 cfs
2025-07-15
Seasonal Avg cfs
       
River Streamflow Levels
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Frio Rv At Concan
USGS 08195000
26 cfs 3.51 ft 0
Frio Rv Bl Dry Frio Rv Nr Uvalde
USGS 08197500
0 cfs 1.42 ft None
Frio Rv Nr Derby
USGS 08205500
0 cfs 0.04 ft None
Frio Rv At Tilden
USGS 08206600
0 cfs 2.08 ft -14.04
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile

The river is a tributary of the Nueces River and is known for its crystal-clear waters, limestone cliffs, and numerous swimming holes. The Frio River has a rich history and was used by Native Americans and early settlers for fishing and transportation. Today, it is primarily used for recreation, including swimming, tubing, and kayaking. There are several reservoirs and dams along the river, including the Frio Canyon Dam, which was built in 1948 to provide irrigation for surrounding farmland. The river is also popular for fishing, with species including bass, catfish, and sunfish. Overall, the Frio River is an important and beloved natural resource in Texas, enjoyed by locals and visitors alike.