Mountain Ave. West Groundwater Replenishment Basins
The Mountain Ave. West Groundwater Replenishment Basins project is a 40-acre recharge facility that is part of the San Jacinto Valley Enhanced Recharge and Recovery Program (SJVERRP) operated by the Eastern Municipal Water District. The SJVERRP will create a resilient water supply supporting the sustainable management of the San Jacinto Groundwater Basin (Basin), reduce dependence on the Bay-Delta, and offer other environmental, water quality, education, and recreation benefits.
- Eastern Municipal Water District
- San Jacinto, CA
- Groundwater Recharge Facility capable of recharging 37,000 acre-feet per year
- Award-winning engineering project
To facilitate the sustainable management of the Basin, EMWD needed to maximize available water supplies in dry-weather years by creating water capture, recharge, conveyance, and treatment facilities. The project is located close to residential neighborhoods and a public park, as well as critical transportation and utility infrastructure, so it was important to reduce operational risks associated with the recharge facility.
Dudek prepared construction documents for the facility, which features three basins: one for de-silting and flow distribution and two for recharge of up to 37,000 acre-feet per year. Project elements included flow control and metering facilities, water pipeline infrastructure, hydraulic basin inlet and control structures, grading plans and details, as well as perimeter landscape and trail improvement.
Mitigation and safety features for the project included stringent dust control measures, embankment slope lining with soil cement to reduce lateral transmission of recharge water and eliminate slope erosion, a perimeter berm to reduce overflow potential, as well as aesthetic and noise impacts, basin water-level monitors tied into the SCADA system, and 11 groundwater monitoring wells around the site.
During wet-weather years, water can be captured, conveyed, recharged, and stored or “banked” in the San Jacinto Groundwater Basin. Groundwater recharge will include non-potable water and surplus imported State Water Project water supplies. During drought years, this stored water will be extracted, treated, and supplied to the region. Groundwater banking is a cost-effective approach to increasing a region’s dry-weather yield, minimizing environmental impacts, and often improving the environmental conditions of new water supply projects.
What We Did
- 3D renderings
- Flow control and pipeline design
- Groundwater Extraction Well siting, drilling, monitoring
- Groundwater recharge facility design
- Landscape architecture
Yearbook of Engineering Achievement Award
Engineering Excellence Merit Award
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