The San Jacinto Tunnel is a 13-mile-long, concrete-lined water tunnel built between 1933 and 1939, carrying Colorado River ...

In the 1930s, workers bored a 13-mile tunnel beneath Mt. San Jacinto. Here's a look inside the engineering feat that carries ...

California's long-gestating plan to construct a massive tunnel that will pump water from the state's Sacramento–San Joaquin River Delta to points south will cost $20 billion, according to a new ...

The bonds could raise $16 billion, or more, for planning and building the massive Delta tunnel project, which would divert billions of gallons of water from the environmentally sensitive San Joaquin ...