Flooding Last updated or reviewed on April 22, 2025 The rivers and creeks that surround our mountain communities bring great joy and beauty, along with increased risks when we experience heavy rainfall. Many households, especially those in floodplains, are subject to flooding and can benefit from proactive planning. This is particularly true as we face increasingly unpredictable weather. The actions you take should be based on your property’s circumstances and may be different if you are facing a major flood risk due to being in a floodway or floodplain, or a minor flood risk such as slope runoff or basement seepage. Helene showed us that many unexpected locations can be highly vulnerable under extreme conditions. Those living in high-risk areas should purchase flood insurance and be ready to evacuate in the event of an emergency. Smaller-scale stormwater management strategies will help property owners and managers reduce their flood vulnerability at both the household and neighborhood levels. Take preventative actions and pay attention to alerts to react quickly during a flood. Being prepared can help save lives and prevent property damage. Learn if your property is in a floodway or floodplain by visiting the NC Flood Risk Information System or the FEMA Flood Map Service Center. As Asheville experienced during Tropical Storm Helene, major flooding can happen outside of floodplains and floodways, however, knowing more about your property’s flood risk can help you prepare. Take Action! Reduce risks to your home Flood proof your exterior walls using moisture barrier material. Elevate critical equipment and toxic materials. Install drainage solutions such as: French drains (p. 39) or other water diversion systems. Rain barrels. Landscape features like rain gardens or bioswales. Install a sump pump. Purchase flood insurance. Have a plan, stay informed, and stay safe Ensure that your emergency plan includes flood scenarios. Sign up for alerts and follow evacuation instructions. Have a waterproof portion of your emergency kit for critical documents and materials “Turn Around, Don’t Drown” – never drive or walk through flooded streets. Download this quick reference chart for ideas on how you can address our known risks with your family actions and property improvements. MAJOR FLOODING Cost Time Range Purchase flood insurance Moderate to High Moderate Flood proofing (emergency) Low to Moderate Moderate Flood proofing (permanent) Moderate to High High Remove or secure toxic materials Low Low Elevate important personal property Moderate Moderate Elevate your home or building High High MINOR FLOODING Cost Time Range Redirect stormwater with green infrastructure Low to High Moderate Utilize rain barrels Moderate Moderate Direct downspouts to vegetated areas Low Low Install French drains or bioswales Moderate to High High Clear stormwater drains Low Low Maintain natural vegetation Low to Moderate Moderate Protect stream buffers and riparian zones Low to Moderate High
