Boulder is beginning a $76.5 million flood mitigation project on Monday that will close the 308-acre CU Boulder South site for three to five years in an effort to protect homes from major floods.
The project near Highway 36 and Table Mesa Drive will include a detention dam along the north and west edges of the CU Boulder South campus to store flood waters, a concrete spillway along Highway 36, an outlet tunnel beneath the highway, and a groundwater management system.
The city said a warehouse and tennis courts on the site will be demolished during the construction. The project is expected to protect 2,300 residents from flooding and is designed to prevent South Boulder Creek from overtopping Highway 36 during a flood…