Iowa River River Levels

Last Updated: December 17, 2025

The Iowa River is a tributary of the Mississippi River and runs about 329 miles across the state of Iowa.


Summary

Total streamflow across the Iowa River was last observed at 5,232 cfs, and is expected to yield approximately 10,378 acre-ft of water today; about 35% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 15,021 cfs, with recent peaks last observed on 2014-07-04 when daily discharge volume was observed at 225,800 cfs.

Maximum discharge along the river is currently at the Iowa River At Wapello reporting a streamflow rate of 3,250 cfs. However, the streamgauge with the highest stage along the river is the Iowa River Below Coralville Dam Nr Coralville with a gauge stage of 49.64 ft. This river is monitored from 8 different streamgauging stations along the Iowa River, the highest being situated at an altitude of 1,187 ft, the Iowa River Near Rowan.

River Details

Last Updated 2025-12-17
Discharge Volume 10,378 ACRE-FT
Streamflow 5,232.0 cfs
-75.0 cfs (-1.41%)
Percent of Normal 34.83%
Maximum 225,800.0 cfs
2014-07-04
Seasonal Avg 15,021 cfs
       
River Streamflow Levels
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Iowa River Near Rowan
USGS 05449500
195 cfs 4.41 ft -10.55
Iowa River At Marshalltown
USGS 05451500
1040 cfs 11.1 ft -8.77
Iowa River Near Belle Plaine
USGS 05452500
966 cfs 7.15 ft 11.29
Iowa River At Marengo
USGS 05453100
818 cfs 7.46 ft -19.8
Iowa River Below Coralville Dam Nr Coralville
USGS 05453520
632 cfs 49.64 ft 31.67
Iowa River At Iowa City
USGS 05454500
447 cfs 9.66 ft -10.06
Iowa River Near Lone Tree
USGS 05455700
1350 cfs 5.74 ft -28.57
Iowa River At Wapello
USGS 05465500
3250 cfs 11.91 ft 33.2
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile

The Iowa River is a tributary of the Mississippi River in the state of Iowa in the United States. It is about 323 miles (520 km) long and is open to small river craft to Iowa City, about 65 miles (105 km) from its mouth. Its major tributary is the Cedar River.