Improving Flood Protection Along Arroyo Mocho
Two flood protection projects, the Arroyo Mocho Medeiros Parkway Project (AM Medeiros Parkway) and the Arroyo Mocho Granada-Murrieta Project (AM Granada), are now moving forward as a single effort. At the recommendation of Zone 7 staff, the Board of Directors passed a resolution at the February 15, 2017 Board meeting to combine the projects in order to maximize efficiencies and benefits.
The AM Medeiros Parkway is a regional flood protection project located along a reach of the Arroyo Mocho known as the Manuel Medeiros Memorial Parkway. The project will create a natural floodplain, offering storm water detention enhancement while promoting natural habitat, and allowing recreational use. Creating natural floodplain may have the additional benefit of increasing groundwater recharge capacity and sustainability for the area.
The AM Granada is designed to alleviate flood risks in the adjacent downstream reach to Medeiros Parkway by raising banks to eliminate low spots and increase the channel conveyance capacity to contain large storm events. Ecological enhancements and repairing/repaving bike trails affected by embankment work is also expected.
While both projects offer flood protection benefits, the AM Medeiros Parkway project offers greater ecological benefits and the AM Granada project offers a higher degree of flood protection benefits. Because these two efforts are located adjacent to one another and offer complementary benefits, combining them is expected to facilitate greater efficiencies for environmental review and associated permitting approvals, and construction, as well as project management.
The AM Medeiros Parkway portion of the project is targeted for completion in fall of 2018. The completion of the AM Granada portion off the project is targeted for fall of 2019. Funding for flood protection projects is provided through property taxes, development fees, and state and federal grant funding.