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How is climate change affecting agriculture? It depends.

Of 12 crops examined in Yolo County, walnuts are most vulnerable, while processing tomatoes and alfalfa acreage may increase due to warmer winters. In an effort to forecast how climate change may affect agriculture, University of California agricultural economists looked at how climate has affected crop acreage in the past. The effect of temperature changes on plants depends on local conditions and the crops grown.

In response to dozens of pending protests, state and federal officials asked for a two-month delay in hearings that could decide the fate of Gov. Jerry Brown’s controversial plan to build two massive tunnels beneath the Sacramento-San Joaquin Delta.

On Monday, the state Department of Water Resources and the U.S. Bureau of Reclamation – the agencies that run the huge Delta pumps – requested a 60-day continuance on hearings that were scheduled to begin in early May at the State Water Resources Control Board.

Almarai Co., Saudi Arabia’s largest dairy company, has bought about 14,000 acres in drought-stricken Southern California and Arizona in an effort to grow hay for its massive herd of cows. The purchase has fueled debate over whether a patchwork of laws and court rulings give too much weight to growers of thirsty crops such as alfalfa.

In a development that casts significant doubt on whether Silicon Valley’s largest water district will help pay for Gov. Jerry Brown’s $17 billion Delta tunnels plan, a majority of Santa Clara Valley Water District board members now say they want to put the issue to a public vote.

The district, which provides 1.9 million residents of Santa Clara County drinking water and flood protection, has been a key player in Brown’s controversial plan. Its share of the tunnels project could cost up to $1.2 billion.

The old dam has once more been swallowed up by the rising lake, it’s no longer such a long hike from the campground to the shore, and — can you believe it? — boat ramps actually lead to water.

Yes, after a 23-foot rise there during the month of March, New Hogan is in much better shape as the end of the wet season approaches. And yet, it remains just 43 percent full, or 82 percent of normal.