The Ukiah Daily Journal reports that the county's Board of Supervisors on Tuesday voted unanimously to make the declaration, citing an "imminent threat of disaster" from drought conditions.
The state Department of Water Resources said Mendocino is the first to request state drought assistance.
Officials hope the declaration will result in state funds and assistance in developing a drought plan.
Gov. Jerry Brown has convened a task force to help decide if a statewide drought emergency is warranted.
State water managers say they will be able to deliver just 5 percent of the water sought by municipal agencies and nearly a million acres of farmland.
The drought has left honey bees without their normal supply of wildflowers to feed on. Beekeepers have supplemented their diet, but that lacks nutrition to keep hives healthy. CapRadio's Amy Quinton tags along with a local beekeeper to learn more.
There’s a bit more progress in the delicate dance of reaching a deal on a new California water bond proposal that would replace the $11 billion bond currently on the November ballot. But a deal – if any – is still months away.
Many people in the Sacramento region responded to calls to conserve water, using less last month than in the previous two Februaries. Many cities have not met conservation goals.
The city of Sacramento is moving ahead with a plan to offer rebates to people who rip out their front lawns and replace them with drought-tolerant landscaping.
The amount of water in Folsom Lake has nearly doubled in the past month since this picture was taken, but lake levels are still only at 59 percent of average.