… A plan by the Marin Municipal Water District to expand the [Nicasio] reservoir, which accounts for more than a quarter of the district’s storage capacity, would inundate more land. Water in the town’s two creeks could back up during winter at the enlarged reservoir and cause more flooding in at least five people’s properties. … The proposal involves installing a 280-foot-long, 4.4-foot-high inflatable rubber gate across the spillway crest of Seeger Dam, which created the Nicasio Reservoir in 1960. That would increase the reservoir’s capacity by about 3,700 acre-feet, or 16.5%. The gate could then be raised to capture more rainfall. 

Other reservoir news:

• California WaterBlog: Sites – the permitting process
• Bureau of Reclamation: News release: Initial Sites Reservoir Project public negotiation sessions postponed