Flooding in Des Moines has reshaped neighborhoods, infrastructure, and daily life across the capital region. Heavy rainfall, saturated soils, and overwhelmed storm systems regularly turn streets and yards into temporary waterways.
When rivers rise and drainage systems fail, residents must understand the drivers, impacts, and long-term strategies for reducing future risk. This overview highlights historical events, current vulnerabilities, and practical steps for staying safe.
| Event | Peak River Level | Date | Major Impacts |
|---|---|---|---|
| 1993 Great Flood | Above flood stage for weeks | 1993 | Widespread residential and commercial damage |
| 2008 Flood | Des Moines River near record | 2008 | Evacuations, road closures, power outages |
| 2014 Floods | Moderate to major crests | 2014 | Basement flooding, sewer backups |
| 2019 Flood Event | Major Des Moines River flooding | 2019 | Agricultural losses, prolonged river closures |
| 2023 Spring Rains | Localized urban flooding | 2023 | Drainage issues, travel disruptions |
Understanding Flood Risk in Urban Des Moines
Urban development increases runoff, reducing natural absorption and heightening flood risk along the Des Moines and Raccoon rivers. Paved surfaces, aging pipes, and low-lying areas amplify impacts during storms.
Local drainage basins, tributaries, and aging infrastructure determine how quickly water moves into neighborhoods. Topography, soil type, and proximity to waterways shape which streets and homes are most vulnerable.
Historical Flood Patterns and Events
Examining major floods in Des Moines reveals recurring themes in rainfall intensity, river behavior, and community response. Certain years stand out due to scale, duration, and economic cost.
These events demonstrate how river levels, reservoir management, and emergency measures interact to shape outcomes for residents and businesses.
Infrastructure and Drainage Systems
Stormwater systems, levees, and channel modifications play a critical role in managing floodwaters. Capacity limits, blockages, and deferred maintenance reduce performance during extreme weather.
Green infrastructure, updated culverts, and targeted pipe replacements can ease pressure on aging networks. Coordinated planning across jurisdictions helps align investments with flood risk maps.
Community Preparedness and Response
Preparedness actions, such as emergency kits, communication plans, and knowing evacuation routes, improve safety when flooding threatens. Real-time alerts and neighbor coordination help people respond quickly.
Local agencies, volunteer groups, and utility providers coordinate sandbagging, sheltering, and damage assessments to support recovery. Clear roles and accessible information reduce confusion during events.
Local Policies and Long-Term Resilience
City policies on zoning, building codes, and stormwater fees directly influence how communities adapt to flooding. Strong regulations and enforcement can reduce future damage.
Ongoing investments in sensors, modeling, and public outreach help decision-makers prioritize projects and communicate risk clearly to residents and businesses.
- Review your insurance coverage and understand deductibles specific to flooding.
- Maintain gutters, sump pumps, and backflow valves to reduce basement flooding risks.
- Monitor local weather alerts and know multiple evacuation routes.
- Support infrastructure upgrades and nature-based solutions in your community.
FAQ
Reader questions
How can I find out if my home is in a flood zone in Des Moines?
Check FEMA Flood Map Service Center and the local city floodplain maps, and consult your mortgage lender or insurer for zone details and requirements.
What should I do immediately if my basement starts flooding?
Turn off electricity if safe, move valuables to higher ground, avoid entering contaminated water, and contact your insurer and local officials for guidance.
Are there financial assistance programs available after a flood in Des Moines?
Yes, residents may access FEMA individual assistance, local government aid, low-interest SBA loans, and insurer claims depending on coverage and eligibility.
How often does the Des Moines River flood compared to the Raccoon River?
The Des Moines River floods more frequently in certain reaches due to its size and watershed, while the Raccoon River experiences rapid rises from urban runoff after intense storms.