2025-12-20T00:00:00-07:00
...THIS IS A PARTICULARLY DANGEROUS SITUATION FOR IN AND IMMEDIATELY ADJACENT TO THE FOOTHILLS, BETWEEN 5500 AND 9000 FEET, FOR BOULDER AND JEFFERSON COUNTIES ON FRIDAY... Strong west winds of 30-40 mph with gusts as high as 85 mph in the foothills of Boulder and northern Jefferson Counties will continue until early evening. Relative humidity values had dropped into the upper single digits and lower teens. Thus, the Particularly Dangerous Situation will remain in place til around 5-6 pm, with only a slow improvement thereafter as winds slowly weaken. Red Flag conditions, however, will persist through the rest of the evening as we remain in a near record warm, dry, and windy airmass along the Front Range through midnight. In fact, strong, gusty winds will persist through much of the night with only a slow improvement in humidity values. Thus, near critical Red Flag conditions will occur into early Saturday morning. While most of the Denver metro area has seen lighter winds prevail most of the day, a period of strong, gusty winds is expected to develop this evening and likely last past midnight, producing Red Flag conditions there. * AFFECTED AREA...Fire Weather Zones 238, 240, 241, 242 and 243. * TIMING...Until midnight MST tonight. * WINDS...West 15 to 25 mph with gusts up to 50 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.
Summary
Total streamflow across the
South Grand River
was last observed at
14
cfs, and is expected to yield approximately
28
acre-ft of water today; about 9%
of normal.
River levels are low and may signify a drought.
Average streamflow for this time of year is
158 cfs,
with recent peaks last observed
on
2019-05-22 when daily discharge volume was observed at
39,700 cfs.
Maximum discharge along the river is currently at the
South Grand River At Archie
reporting a streamflow rate of 14.1 cfs.
This is also the highest stage along the South Grand River, with a gauge stage of
5.36 ft at this location.
This river is monitored from 2 different streamgauging stations along the South Grand River, the highest being situated at an altitude of 773 ft, the
South Grand River At Archie.
River Details
| Last Updated | 2025-12-19 |
| Discharge Volume | 28 ACRE-FT |
| Streamflow |
14.1 cfs
-0.9 cfs (-6.0%) |
| Percent of Normal | 8.91% |
| Maximum |
39,700.0 cfs
2019-05-22 |
| Seasonal Avg | 158 cfs |
River Streamflow Levels
| Streamgauge | Streamflow | Gauge Stage | 24hr Change (%) | % Normal | Minimum (cfs) | Maximum (cfs) | Air Temp | Elevation |
|---|---|---|---|---|---|---|---|---|
|
South Grand River At Archie
USGS 06921590 |
14 cfs | 5.36 ft | -6 | |||||
|
South Grand River At Urich
USGS 06921600 |
5 cfs | 1.94 ft | 32.69 |
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile
The South Grand River is a stream in Bates, Cass, Henry and Benton counties of west central Missouri. It is a tributary of the Osage River.
The stream headwaters are in Cass County at the confluence of Massey Creek and East Creek at 38°40′03″N 94°31′56″W three miles east of Cleveland and five miles southwest of Peculiar. The stream flows southeast crossing under Missouri Route 2 near Freeman and US Route 71 near Archie. Just to the southeast of Archie the stream turns to the east and becomes the boundary between Cass and Bates counties. The stream flows east through the Settles Ford Conservation Area and enters Henry County and passes south of Urich and Missouri Route 7. The stream course turns again to the southeast passing under Missouri Route 18 west of Clinton and enters the waters of Truman Reservoir south of Clinton. The stream course continues as part of the lake passing under Missouri Route 13 south of Clinton and east into Benton County to its confluence with the Osage River one mile north of the Harry S Truman Dam at 38°16′35″N 93°24′42″W.