* WHAT...High temperatures are expected around 105F.
* WHERE...Otero, Bent, and Prowers Counties.
* WHEN...Until 7 PM MDT this evening.
* IMPACTS...Hot temperatures may cause heat illnesses.
Heat Advisory
Until 2026-08-10T19:00:00-06:00
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National Weather Service
* WHAT...High temperatures are expected around 105F.
* WHERE...Otero, Bent, and Prowers Counties.
* WHEN...Until 7 PM MDT this evening.
* IMPACTS...Hot temperatures may cause heat illnesses.
ARKANSAS RIVER AT LAMAR, CO.
Realtime Data
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Report
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Conditions
18
Discharge (cfs)
5.5
Gauge Height (ft)
Streamflow discharge was last observed at 18 cfs, and a gauge height of 5.49 feet.
With the
% decrease since yesterday,
the streamflow average over the past 10 days is 22 .
Weather today, Tomorrow,
The river is regulated by several dams, including the John Martin Reservoir Dam upstream, which can affect the flow rate. Seasonally, the river experiences higher flows during spring and early summer due to snowmelt runoff. The river also provides irrigation for agriculture in the area. Interestingly, the Arkansas River was named by early French explorers who thought the native Quapaw tribe they encountered were Arkansawyers. Overall, the Arkansas River at Lamar, CO streamgauge provides important data for monitoring water resources and managing usage in the region.
August 10, 2026
Elevation
3,601.0 ft
Last Updated
Gage height, ft
5.49 ft
Stream water level elevation above NAVD 1988, in ft