With City Council approval, Broomfield will add nearly $6 million of additional funding to two drainage improvement projects.

The resolutions approved unanimously in Tuesday night’s City Council meeting amend the intergovernmental agreements between Broomfield and the Mile High Flood District for drainage improvements to reduce flood risk to the Nissen and City Park channels.

The resolutions add $6 million of Broomfield’s funds to the two projects. Funds for both the Nissen channel and City Park channel projects are gathered from the Mile High Flood District and from Broomfield.

The Mile High Flood District stretches throughout the Denver area and into the Boulder area and includes most of Broomfield, according to the district’s service area map. Broomfielders living south of Colo. 7 pay a mill rate — the official term for a property tax — of 0.9 to the district for maintenance, research and improvement projects related to Broomfield’s floodplains, according to the presentation. “Floodplain” means land that may be submerged by floodwaters.

The Nissen channel project began in August last year, and the first phase is expected to be complete in July.

The project begins west of Lowell Boulevard and north of 120th Avenue, stretching west to end near Country Vista Park.

The additional $2.278 million of Broomfield’s funds added by the Tuesday resolution would carry over into the second phase of the project, which is anticipated to begin in 2028 and take 12 months to complete, according to the presentation from Matthew Deaver, a deputy director of community development for Broomfield.