City Council Meeting Date: May 16, 2023
To: Mayor and City Council
City Administrator
From: David Bennett, Public Works Director/City Engineer
Title
Discuss Downtown Flood Study Phase 2 - FEMA Benefit Cost Analysis.
Body
Action Requested:
The Northfield City Council Discusses Downtown Flood Study Phase 2 - FEMA Benefit Cost Analysis.
Summary Report:
The City, over the last 10 years, has had numerous flooding events of the Cannon River causing damages to properties and public infrastructure. Due to this, City Council approved an Advanced Assistance Grant with the State of MN Homeland and Emergency Management. Barr Engineering is performing the study for the City.
There are three phases to the project study, only Phase 1 study was completed and accepted by Council on May 3, 2022. Tonight, we will be reviewing the proposed flood mitigation projects, benefit cost analysis, and climate change modeling. On May 3, 2022 Council directed that the flood mitigation project below get moved to Phase 2.
Area 1 - West side North of 4th Street Bridge (301 Water St., 207 Water St., 205 Water St.)
* Recommendation is to move the Alt 1-2 Floodwall Extension to Phase 2
Area 2 - East side North of 4th Street Bridge (11 Bridge Square, 13 Bridge Square)
* Recommendation is to move the Alt 2-2 Dry Floodproofing to Phase 2
Area 3 - South of Fifth St. - East side (500 Water St., 516 Water St., 630 Water St.,)
* Recommendation is to move the Alt 3-2 Dry Floodproofing to Phase 2
The City was able secure additional funding from the state for the Phase 2 study along with studying the Carleton Stadium, West Gym, and practice fields that flood.
The timeline/phases of the Downtown Flood Study are below:
Phase 1 - Completed - Study and Identify Downtown Flood Improvement Options and identify costs for the improvements.
Phase 2 - Underway, FEMA Benefit Cost Analysis, climate change modeling, and include Carleton Properties.
Phase 2A - Pursue Funding - Explore gra...
Click here for full text