Flood

YOU NEED A PERMIT ... for ALL flood mitigation efforts, including SANDBAG placement. Submit for permit here.

All flooding reports involving Ketchum City infrastructure or life safety shall be reported to 911 emergency dispatch immediately. All other reports involving flooding within the City of Ketchum shall be reported to non-emergency dispatch: 208.726.7833

Flood Preparedness Meeting Recording

Causes of Flooding in Ketchum: 

Flooding happens when climate (or weather patterns), geology, and hydrology combine to create conditions where river and stream waters flow outside their usual course and overflow their banks. Development can also constrict natural stream flow and contribute to seasonal flooding conditions, especially when built impediments cause waters to back up. Flooding generally occurs in the spring when large snow pack in the nearby mountains melts quickly, especially in the presence of frozen ground and rain. Wildfires, development in the floodplain, loss of riparian vegetation, and channelization of the stream banks has also led to increased flood hazards in our valley.

Flood Safety - In an Emergency: 

If flooding is imminent, affected residents will be notified by a reverse 911 telephone call. The Emergency Alert System will broadcast warnings via local radio stations KECH and KSKI, and via email or text to those who have signed up for the service through the Blaine County Emergency Alert Program. The city will respond to life safety emergencies and protect city property and infrastructure during a flooding event. The city does not have the resources to assist individual property owners in protecting structures from floods or pumping water from basements. The city may issue an Emergency Streambank Stabilization Permit to assist in the protection of structures during a flooding event.

Heed flood warnings: 

• A flood WATCH means flooding or flash flooding is possible in your area
• A food WARNING means flooding or flash flooding is already occurring or will  occur soon in your area
• When a flood or flash flood warning is issued for your area, head for higher ground immediately 

Stay away from flood waters:

• Just 6 inches of moving water can knock you over, and 2 feet of water can sweep your vehicle away
• If you come upon a flowing stream where water is above your ankle or across a flooded road while  driving, stop, turn around and go another way
• Avoid camping or parking along streams, rivers and creeks when there is a risk of flooding

Create and practice a Disaster Plan:

• Ensure that everyone in your family knows what to do if a flood occurs 
• Discuss travel routes that are not prone to flooding
• Decide where to meet and who to contact in case of flooding
• Assemble and maintain an emergency preparedness kit, including fresh water, non-perishable food,  flashlight, batteries, cash, important documents, medications and first aid supplies
• Make a plan for evacuating people who need assistance, and pets