San Jose Relies on Water from the Sierra Nevada. Climate Change is Challenging that System

In Santa Clara County, lawns are dry, a reservoir is nearly empty, and water restrictions are mandated. After two winters with very little rain — and San Jose’s driest year in 128 years of record keeping — the county is marked by one of the worst droughts in modern history.

Santa Clara County’s experience of drought is set apart from the rest of the state by a myriad of issues — less water from the Sierra Nevada, the effect of human-caused climate change on water supplies, and a case of incredibly bad luck.