Department of Utilities
Reference: Mile High Flood District (MHFD) IGA Regarding Sable Outfall
To: Mayor Gregory Mills and Members of City Council
Through: Michael P. Martinez, City Manager
Prepared By: Scott Olsen, Director of Utilities
Date Prepared: November 18, 2025
PURPOSE
Requesting City Council’s approval of a resolution authorizing the City Manager, or designee, to execute an intergovernmental agreement (IGA) between the City and MHFD regarding the Sable Outfall.
BACKGROUND
This item was originally presented to City Council at the December 9, 2025, City Council Study Session.
The Sable Outfall system will serve existing and future development in the City, including the Sable Boulevard improvements, Farmlore Development, and approximately 500 acres of the Prairie Center Development.
As previously presented to City Council, the contractor working on behalf of the Farmlore Development will be constructing the piped portion of the outfall under the Fulton Ditch. The City and MHFD now wish to complete design and construct the remainder of the open channel outfall just east of Sable Boulevard, which will connect to the existing South Outfall Channel at 148th Avenue alignment.
Per the IGA, the City and MHFD will each contribute $225,000 in 2025 for the construction of the project. It is anticipated that MHFD will contribute an additional $2 million in 2026 and the City will cover the remainder of the project costs anticipated at a total of $4.5M, and the parties will amend the IGA or enter into a new IGA for those future costs. At this time, the IGA only addresses the 2025 monetary contribution.
FINANCIAL IMPACT
Sufficient appropriation exists in the 2025 and 2026 budget for the City’s contribution to the project as defined in the IGA.
STAFF RECOMMENDATION
City staff recommend approval of the resolution as drafted, authorizing the City Manager, or designee, to execute the IGA.
OPTIONS FOR COUNCIL CONSIDERATION
• Approve resolution as drafted
• Approve a modified resolution
• Deny resolution
• Provide further direction to staff
ATTACHMENTS
• Resolution
• Final IGA
• PowerPoint presentation