Chowchilla Subbasin Groundwater Recharge Project 1 (Streambed Alteration Agreement No. EPIMS-MAD-40478-R4)

The Chowchilla Subbasin Groundwater Recharge Project, managed by the Central Valley Flood Protection Board and Madera County, involves the construction of flow diversion structures to facilitate groundwater recharge and mitigate drought conditions in Madera County, California. Specifically, the project includes the construction of the Clayton and Haynes structures along the Eastside Bypass levees. The scope of work entails the installation of rubber gasket reinforced concrete pipe conveyance pipelines, 14-foot diameter fish screens, concrete cutoff walls, and reinforced concrete control and pump boxes. The Haynes structure is located approximately 14 miles southwest of Chowchilla near the junction of Lincoln Road and Avenue 20. Under solicitation number 19789 and associated permits, the project is designated as exempt from the California Environmental Quality Act (CEQA) pursuant to Executive Order N-7-22 and relevant Public Resources Code sections due to its role in emergency drought response. Administrative oversight is provided by Project Manager Stephanie Anagnoson of Madera County and Senior Environmental Scientist Jennifer Calles of the Central Valley Flood Protection Board. The project is classified under NAICS code 237990 for other heavy engineering projects.