The Marin Municipal Water District is entering a $2.65 million deal with the U.S. Army Corps of Engineers to advance a major drought resiliency project. The water district board voted unanimously Tuesday to approve the partnership agreement, charging the Army Corps to support the “atmospheric river capture” project. The project is a proposed pipeline that would replenish Marin reservoirs with Sonoma County rainwater during droughts. Under the agreement, the Army Corps will design a section of the pipeline that is 18,000 feet long. The agreement is a necessary step for the district to use federal funding from the 2022 Water Resources Development Act, or WRDA, slated for the project. … Estimated at $214 million, the planned 13-mile, 36-inch pipe would tap into an aqueduct system that runs along Highway 101, carrying water from the Russian River into Marin.