Last Updated: January 1, 2026
Iowa's rivers are showing a diverse range of streamflow conditions, with several waterways experiencing below-normal flows, which may concern local river enthusiasts and those monitoring water resources. For instance, the Des Moines River at 2nd Avenue has seen a significant decrease in streamflow, registering a -29.98 change in the last 24 hours and flowing at only 17.46% of its normal rate, which could indicate a flow drought. Conversely, the Raccoon River near West Des Moines has witnessed an extraordinarily high streamflow at 1300 cubic feet per second (cfs), a sharp 73.56 cfs rise in the last day, sitting at 279.79% above normal, which could suggest potential flooding and impact popular whitewater trails in the area.
Notable areas of concern include the Mississippi River at Clinton, with a current flow of 21,800 cfs but a -56.58% from normal, and the Iowa River at Marshalltown, flowing at 1040 cfs, up 19.68% from the norm, indicating variability in river conditions across the state. The Cedar River, a key watershed, shows a mix of conditions: near Waterloo, it flows at 2090 cfs, which is 30.3% below normal, while at Cedar Rapids, the flow is down to 60.24% of what's expected. These fluctuations may impact cities like Des Moines, Cedar Rapids, and Waterloo, with implications for recreational activities, water supply, and flood management. River enthusiasts and stakeholders should stay updated on local advisories and be aware of the changing riverine environment in Iowa.
Iowa is characterized by a humid continental climate and an extensive network of rivers, streams, and tributaries that supply water to major reservoirs and dams. The Des Moines River Basin, which includes the Raccoon River, provides the largest water source for the state. The Missouri River forms the western boundary of the state and is the second-largest river in Iowa. Other major rivers include the Cedar, Iowa, and Wapsipinicon. Snowmelt and rainfall are the primary sources of water in Iowa, with the state receiving an average of 32 inches of precipitation per year. The state experiences both droughts and floods, with the most severe flood in recent history occurring in 2008. The Iowa Watershed Approach is a comprehensive approach to flood management that involves watershed management, floodplain restoration, and green infrastructure.