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“April showers bring May flowers” took on a whole new meaning this year: The United States just experienced its second-wettest April on record. Average precipitation across the Lower 48 was 3.43 inches. In other words, if you spread all of the rain and snow out across the continental United States, each location would have received nearly 3 ½ inches. That is a lot of water. This record is second only to April 1957 and nearly a full inch more than the average April rainfall in the 20th century.

The melting of this year’s record snowpack is continuing to create problems, with authorities warning of more flooding in Yosemite National Park and fast-moving, high water at a popular Central Valley river. The National Weather Service issued a flood warning Tuesday as Yosemite’s Pohono Bridge was expected to be swamped overnight. By 4 a.m. Wednesday, the Merced River probably will reach its flood stage of 10 feet, said Christine Riley, a weather service meteorologist in Hanford, Calif.

Sacramento State consultants have identified 43 water fountains, bottle filling stations and sinks that must be repaired or replaced due to high lead levels, according to new reports released Monday. The university initially shut down 85 sinks and fountains with lead levels above 5 parts per billion on Jan. 13. That came after students and professors found high lead levels when they tested 449 sinks and fountains over three days in January as part of a research project.

Americans ate 2 billion pounds of avocados last year. The majority of the green fruit comes from Mexico, and about 10 percent is grown in California. But researchers in California’s Central Valley are breeding avocado trees they hope will grow well in the state’s main agricultural region.

California’s ambitious plan to tunnel under the West’s largest estuary has always had two primary goals: to restore imperiled native fish and to improve water deliveries to farms and cities. An early analysis by federal wildlife agencies, however, indicates the project might make life worse for fish. The so-called WaterFix project calls for building two giant tunnels under the Sacramento-San Joaquin Delta, a tidal estuary that nurtures the largest salmon run on the West Coast.