Zone 3A

Area: 19,700 acres
Natural Creeks: 17 miles
Earth Channels: 19 miles
Concrete Channels: 5 miles
Underground Pipes: 32 miles
Improved Creeks: < 1 mile

Location: Hayward
Anticipated Completion: 2026

The District owns and maintains the Ward Creek (Line B) between Line F and Pacheco Way in the City of Hayward.

The existing top elevation of the east levee within the project limits is below the 100-year (one percent annual chance) design water surface elevation. To contain the design flow, the District will raise the levee within the project limits by 0.5-feet above the 100-year design water surface elevation. This levee raising will be achieved by adding imported soil to the embankment and resurfacing the access road along the top of embankment.

The existing trail within the project limits will be replaced upon construction completion.

Location: Hayward, Union City
Year Completed: 2021-2025

Low-lying communities along the San Francisco Bay rely on pump stations to move stormwater from neighborhoods to nearby waterways. The District operates dozens of pump stations across western Alameda County, making them critical assets for managing stormwater runoff and reducing flood risk during heavy storms and the rainy season.

Several pump stations have recently undergone upgrades and rehabilitation to extend their service life and improve reliability:

Westview Pump Station (Union City)
Engine No. 1 was nearing the end of its useful life and was replaced along with associated components, including control panels, fuel piping, and exhaust systems. Additional improvements included upgrades to roof-to-wall anchorage to meet current seismic standards, installation of new gravity bypass openings and flap gates, site regrading, and replacement of the cathodic protection system.

Ruus Road Pump Station (Hayward)
Two of the station’s three engines were replaced due to age and deterioration. The project also included replacement of associated appurtenances such as control panels, fuel piping, and exhaust systems, along with roof-to-wall anchorage upgrades to enhance seismic resilience. 

Industrial Pump Station (Hayward)
Condition assessments identified structural deficiencies. Rehabilitation work included strengthening the station’s walls and foundations to improve structural integrity and extend service life. Cracked walls were repaired and reinforced using a fiber-reinforced mortar system, and helical ground anchors were installed to stabilize the foundation.

Eden Landing and Besco Pump Stations (Hayward)
Deficiencies were identified in the outfall structures and flap gates. Improvements included rehabilitation of concrete outfall structures and replacement of deteriorated headwalls and wingwalls. Existing flap gates were replaced with new units equipped with cathodic protection systems.

Eden Shores, Ameron, and Alvarado Pump Stations (Hayward) 
Electrical system assessments indicated that several components were nearing the end of their design life. Upgrades included replacement of motor control centers, automatic transfer switches, transformers, utility metering panels, panelboards, conductors, grounding systems, raceways, and both indoor and outdoor lighting, with new energy-efficient LED fixtures installed.

Location: Union City
Year Completed: 2023

As part of the District’s Capital Improvement Program, a segment of Old Alameda Creek south levee between Union City Boulevard and the Union Pacific Railroad (UPRR) Crossing was upgraded to improve its capacity to withstand100-year storm events. The project included raising the existing earthen levee along the south bank and constructing a new concrete floodwall to prevent floodwater from inundating adjacent properties.

The levee improvements provide the freeboard required by the Federal Emergency Management Agency (FEMA). Raising the levee was achieved by placing imported soil to build up the embankment, along with the construction of a 150-foot-long floodwall just downstream of Union City Boulevard.

To enhance safety and improve maneuverability during channel maintenance operations, the District also constructed a maintenance vehicle turnaround just upstream of the UPRR right-of-way.

Location: Hayward
Year Completed: 2019

In collaboration with the Alameda County Public Works Agency, the District converted the agencies’ parking lots into a 142,000-square-foot showcase of green stormwater infrastructure. The site features 14 low-impact development elements—including permeable pavements, bioretention areas, tree wells, rainwater harvesting, and trash capture devices—that help reduce runoff and improve water quality. The project also functions as a public and professional learning site, with signage, self-guided tours, and workshops. Monitoring found a 52 percent reduction in stormwater runoff compared with the former impervious pavement, and the project later received a California Stormwater Quality Association award.