Landslide Near North Marin Aqueduct

(Updated April 7, 2023) On March 22, 2023 a significant landslide occurred along Redwood Blvd. near Olompali State Park in the vicinity of the North Marin Aqueduct, a 30-inch pipeline, which conveys water to Marin County from the Sonoma County Water Agency. Although it is not apparent if the slide has impacted the pipe itself, the District has isolated a segment of the aqueduct at this location, out of an abundance of caution, to avoid any public safety issues or water loss that would result from the potential failure of the pipeline. The District is conducting ongoing assessments of the aqueduct to determine if there is any damage to the pipeline and is engaged in contingency planning for the next steps.

We are currently able to meet all of our current customer domestic water needs by operating our Stafford Lake Treatment Plant. 

On April 4, 2023 the North Marin Water District Board declared a Local Emergency to address the Landslide at the North Marin Aqueduct. This authorizes the General Manager to implement water use prohibitions – if needed – to fit the need of the system, and is consistent with the District’s Water Shortage Contingency Plan.

On April 7, 2023 the District asked all customers to keep irrigation and sprinkler systems shut off until the assessment is completed, which is expected to be Friday April 14, 2023. 

At this time, there is no evidence of pipeline damage. However, our assessment is ongoing. 

If it is determined that the pipeline has suffered any damage, more significant water use reduction mandates will be implemented as the warmer season approaches. 

Please remember to use water as efficiently as possible at this time and avoid all non-essential water use (including outdoor irrigation/watering) and stay tuned for more details as they emerge.