For decades, salt has infiltrated wells in Point Reyes Station during late summer, but this year the intrusion is higher than ever due to a confluence of factors. Sea-level rise brings bay water closer to freshwater aquifers, and a National Park Service project to remove a series of dikes and dams by Lagunitas Creek in 2008 stripped the watershed of protection from high tides. Two bulk users, a construction company and firefighters, consumed more water this year.