Floodplain Management
CSU reduces flood risk through updated planning, flood mitigation projects, and review of construction that occurs in or near the floodplain.
At a glance
1997 flood event
Record rainfall caused major flooding and campus impacts—driving long-term mitigation planning.
$5M+ invested
Since 1997, CSU has invested in flood mitigation measures and drainage improvements.
100-year floodplain map
The Master Drainage Plan is routinely updated and includes a 100-year floodplain.
Project review required
Projects in or touching the floodplain may require hydraulic modeling and FM review.
1997 to today
1997: Severe flooding in Fort Collins impacts Spring Creek and CSU’s Main Campus.
Recovery: CSU renovates damaged buildings and constructs flood mitigation features.
Ongoing: Drainage planning and floodplain mapping are updated to reduce risk over time.
How CSU reduces flood risk
Structural measures
- Flood-proofing structures in inundation areas
- Detention ponds
- Floodwalls, berms, and storm system upgrades
- Diverting floodwaters without adverse upstream/downstream impacts
Non-structural measures
- Education and planning
- Design considerations
- Hydraulic modeling and Facilities Management review
- Preventing “rise” in water elevations and adverse flow-path changes
Does your project touch the floodplain?
If your construction project is in or near the floodplain, contact your CSU Project Manager or the Campus Landscape Architect to confirm required steps for flood risk mitigation.