Raccoon River Will Rise Toward Flood Stage

Polk County emergency officials warned residents of potential flooding as river levels are projected to double.

Updated on Sept. 29, 2026 in Current Conditions

Bold flat-color editorial illustration of dark, turbulent geometric river waves, evoking the threat of flooding in a rainy landscape. — Polk County emergency officials issued a flood warning for the Raccoon River as levels are projected to rise significantly following recent heavy rainfall. AI Illustration. Upload story photo >

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Polk County emergency managers issued a warning as the Raccoon River is expected to rise from 7 feet to between 15 and 18 feet in the coming days. The surge follows significant ground saturation and persistent rainfall.

Why it matters

Rising water levels pose a direct threat to local infrastructure, including the potential closure of Fleur Drive and the operation of Water Works flood gates. Officials are closely monitoring the impact of Pacific moisture on the area.

The Raccoon River is projected to crest between 15 and 18 feet in the coming days, rising significantly from its current 7-foot level. Des Moines may also reach its wettest September on record if an additional 1.75 inches of rain falls.

The players

National Weather Service

This federal agency is responsible for providing meteorological data, weather forecasts, and hazardous weather warnings to the public.

Polk County

This local government jurisdiction manages emergency response protocols and flood preparedness for the Des Moines area.

The details

Local emergency teams are bracing for potential impacts as saturated ground and heavy moisture continue to drive up river levels. The city is currently nearing its highest rainfall total for the month, threatening a record that has stood for decades.

September 2026 marks the period for a potential rainfall record.
Late Wednesday night is the deadline for reaching the rainfall record threshold.
The Raccoon River is projected to rise to 15-18 feet in the coming days.

Seasonal Patterns

Des Moines currently stands on the verge of breaking its wettest September record within a 150-year historical window. This event follows a trajectory established by consistent rainfall patterns over the past month.

Residents should prepare for possible disruptions to travel, specifically the potential closure of Fleur Drive. Monitor updates regarding the activation of Water Works flood gates to understand how local infrastructure changes will affect your commute.

The takeaway

The combination of high river levels and imminent rainfall records highlights the need for constant vigilance during periods of ground saturation. Local residents should maintain awareness of emergency alerts to ensure safety as the Raccoon River reaches its crest.