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Construction Updates

Marin Water Worker with Mt. Tam in the background

Marin Water is proud of its rich history as California’s first municipal water district, established in 1912. With that distinction, comes the responsibility to address aging infrastructure. Many of the district's pipelines are more than 100 years old. The Capital Improvement Program responsibly replaces aging and leak-prone pipelines with pipes that better withstand earthquakes and have greater overall reliability. For any construction project questions, please contact the Engineering Division at 415.945.1560.


Active Construction Projects

Fire & Fuels Management 
With nearly 22,000 acres of public land within the Mount Tamalpais Watershed and the hills of west Marin under our care, the District continues to engage in critical vegetation management work. The ongoing, strategic efforts follow the District's Biodiversity, Fire and Fuels Integrated Plan, which is designed to not only reduce the risk of devastating wildfire, but also bolster ecological health through the removal of invasive plant species. Learn more

Pine Mountain Tanks Project
The Pine Mountain Tunnel was constructed in 1919 to convey water from Alpine Reservoir to Fairfax and San Rafael and was converted to a water storage facility in 1971 and remains in that use today. Replacing the 100-year-old tunnel with two 2-million gallon concrete tanks will enhance water system resiliency and replaces aging infrastructure on the District’s watershed. Learn more

Dam Spillway Repairs
In accordance with the Division of Safety of Dams requirements, Marin Water is continuing its assessment of the concrete spillways at Soulajule, Seeger and Peters dams. This work entails the use of ground-penetrating radar to scan spillway slabs, the drilling of cores and probe holes through the spillways slabs to establish sub-surface conditions and the cleaning and video surveying of drains within the spillway slabs. This project also involves the repair of all core and probe holes created as part of the process. Learn more.

Wolfback Ridge Tank Rehabilitation Project 
This project will replace corroded roofs, gussets and roof hat plates of two, 25,000-gallon welded steel potable water tanks on Wolfback Ridge in Sausalito. The project will also install new interior and exterior protective coatings on the tanks. Rehabilitating both welded steel tanks, rather than replacing, is a cost-effective strategy to extend their useful life for the District and the community they serve. Learn more

Redwood Drive Pipeline Rehabilitation Project 
This project will install about 4,400 feet of 6-inch, welded steel pipe to replace old, leak-prone, and fire flow-deficient piping that was installed as early as 1913 in the unincorporated community of Woodacre. The Redwood Drive project is a component of the District's Fire Flow Improvement Program. Learn more

Granada Drive Pipeline Replacement Project
This project will install about 10,230 feet of new welded steel pipe, replacing aging, leak-prone and seismically deficient piping installed as early as 1956. The pipeline replacement is scheduled to coordinate with the Town of Corte Madera. Learn more.

Sir Francis Drake Rehabilitation Project
This project will install about 4,500 feet of welded steel pipe to replace aging, leak-prone and fire flow-deficient piping that was installed as early as 1924 along Sir Francis Drake Boulevard in the Town of San Anselmo. Marin Water and San Anselmo have been in close coordination in the lead-up to this project's launch in an effort to limit traffic impacts related to this important work. Learn more.

Tiburon Pipeline Replacement Project
This Capital Improvement Program project will replace 3,490 feet of aging, 6-inch cast iron pipe beneath Paradise Drive in Tiburon. Originally installed in 1922, this pipeline is being replaced with welded steel pipe that will improve reliability and seismic resiliency. Learn more.

Lagunitas Creek Habitat Enhancement Project
This project is meant to improve spawning habitat for protected and endangered aquatic species within Lagunitas Creek. More than a dozen sites have been selected for habitat improvement, which involves the addition of hundreds of logs and thousands of tons of gravel to provide shelter as well as to create deeper, slower pools for rearing. Learn more.