The information presented here assumes a probable maximum flood, which would be an extremely rare event. The U.S. Department of the Interior, Bureau of Reclamation issued an Emergency Preparedness Plan Brief regarding Horsetooth Dams and Reservoir in October, 1983. That document states that a dam failure during a probable maximum flood would inundate or cause severe damage to the following areas:

• Fort Collins
• Timnath
• Laporte
• Interstate 25
• Windsor
• Kodak Plant
• Portions of Greeley
• Hardin
• Masters
• Orchard
• Goodrich
• Weldona
• Low lying areas of Fort Morgan

Introduction | Horsetooth Reservoir | What Emergency Plans are Already in Place? | Where Would All That Water Go?