* WHAT...Heat index values up to 102 expected.
* WHERE...Portions of east central, south central, and southeast
Wisconsin.
* WHEN...From noon Tuesday to 8 PM CDT Wednesday.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
Heat Advisory
Until 2026-07-13T19:45:00-05:00
•
National Weather Service
* WHAT...Heat index values up to 102 expected.
* WHERE...Portions of east central, south central, and southeast
Wisconsin.
* WHEN...From noon Tuesday to 8 PM CDT Wednesday.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
YAHARA RIVER AT STATE HWY 113 AT MADISON, WI
Realtime Data
•
Report
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Conditions
47
Discharge (cfs)
10.0
Gauge Height (ft)
Streamflow discharge was last observed at 47 cfs, and a gauge height of 9.97 feet.
With the
% decrease since yesterday,
the streamflow average over the past 10 days is 82 .
Weather today, Tomorrow,
The Yahara River is a tributary of Lake Mendota and is fed by several smaller creeks and streams. The river has been dammed at several points to create reservoirs for recreational use. Seasonal trends show higher flows in the spring due to snowmelt and rain, and lower flows in the summer and fall. Interesting facts include the presence of several species of fish, including bass and northern pike, and the river's role in helping to regulate the water levels in Lake Mendota.
July 13, 2026
Elevation
846.0 ft
Last Updated
Mean water velocity for discharge computation, feet per second
0.21 ft/sec
Gage height, ft
9.97 ft
Stream water level elevation above NAVD 1988, in ft