https://www.mercurynews.com/2021/01/06/price-tag-nearly-doubles-for-huge-new-dam-project-in-santa-clara-county-to-2-5-billion/

In a major and potentially fatal setback for plans to build the largest dam in the Bay Area in more than 20 years, the price tag to construct a new reservoir in southern Santa Clara County near Pacheco Pass has nearly doubled, from $1.3 billion to $2.5 billion.

The project, proposed by the Santa Clara Valley Water District, a government agency based in San Jose, calls for a 319-foot-high dam to be built along Pacheco Creek in the rural canyons just north of Highway 152 near Henry W. Coe State Park.  For the past three years, the district has considered the dam to be a key part of the future water plans for 2 million people in the South Bay.