City of Dublin and Zone 7 Water Agency Complete Stormwater Bioswale and Creek Upgrades Near Emerald Glen Park

Environmental engineers with the City of Dublin Public Works Department and hydrologists from the Zone 7 Water Agency have completed their October 2026 round of green stormwater infrastructure upgrades and stream-bank stabilization work along the Tassajara Creek corridor and Emerald Glen Park. Presented to the Zone 7 Board of Directors and Dublin civic leaders this month, the project prepares the Tri-Valley's natural flood-control channels and municipal park basins to capture and filter early November rainfall. Field teams inspected more than three miles of flood-control channels across eastern Dublin during the autumn maintenance window.

Bordering Central Parkway and Gleason Drive in eastern Dublin, the forty-eight-acre Emerald Glen Park complex incorporates contoured detention basins and cobble-lined vegetated bioswales planted with native California sedges, rushes, and drought-tolerant sycamores. When autumn storms wash across surrounding streets and parking lots, those bio-retention channels slow peak runoff velocity and trap brake-pad particulates, motor oil residue, and litter before stormwater enters Tassajara Creek and the Arroyo Mocho watershed.

Along the adjacent multi-use Tassajara Creek Trail, Zone 7 flood-protection crews spent October clearing invasive Arundel reed, reinforcing eroded earthen banks with native willow stakes and boulder riprap, and inspecting hydrodynamic trash-capture screens installed beneath Dublin Boulevard and Interstate 580 overpasses. Hydrologists noted that maintaining clean, vegetated stream corridors simultaneously reduces downstream flood risk and recharges the Livermore-Amador Valley groundwater basin.

Dublin, Pleasanton, and Livermore residents can explore interactive watershed maps, volunteer for autumn creek-cleanup days, or report blocked storm drains online at zone7water.com or through the City of Dublin Public Works line at (925) 833-6630. Educational guides on residential rainwater harvesting are also available at the Dublin Civic Center.