SAN FRANCISCO >> After California’s driest three years on record, there have been few sounds as disturbing to water conservationists as the whisk-whisk-whisk of automatic lawn sprinklers kicking on directly behind TV reporters covering some of the state’s first heavy downpours in years.

Another storm moved in Tuesday, with the rain expected to continue through Wednesday.

Recent storms eased the drought somewhat, but there’s a long way to go. And state officials are worried that the rain will give people an excuse to abandon the already inconsistent conservation efforts adopted to deal with the dry spell.

When Gov. Jerry Brown declared a drought emergency in January, he asked people to cut water use by 20 percent. Instead, many Californians’ water use actually went up for a while. Dozens of communities called for mandatory water cuts but lacked the means to enforce them. So lawn watering, golf course maintenance and curbside car washes went on without interruption.

State officials and weather experts say it’s too early to know if the storms are the beginning of the end of the drought. They pledge to keep promoting conservation.

“A deluge like this makes us feel, ‘Oh, my God, it must be over,'” said Felicia Marcus, chairwoman of the state Water Resources Control Board, which instituted monthly water-use reporting this year to bring home to Californians how much water they were using.

But “we are in a really deep hole … and we have to act like we are in the drought of our lives.” She said officials will “keep working on it even after the drought because there’s going to be another one around the bend.”

The water board found last month that some well-off Southern California communities were still using more than 500 gallons per person a day — 10 times the amount used by some poorer cities. Marcus and others pledged to step up education efforts.

Climatologist Bill Patzert, a drought expert at NASA’s Jet Propulsion Laboratory in Pasadena, rose at 3 a.m. last week to bask in the sound of rain from the first big storm to roll through Southern California in a long time. By dawn, he was glowering at television reports showing water-wasting automatic sprinklers whirring in the rain behind at the scene of mudslides and floods.

“Tell them to turn off their damn sprinklers for a week. Tell them I said so,” Patzert said. “We’re still in a drought.”

California would need 11 trillion gallons of water to replenish its natural water stores, according to a projection this week from scientists using satellite data to analyze snowpack and groundwater.

“It takes years to get into a drought of this severity, and it will likely take many more big storms, and years, to crawl out of it,” Jay Famiglietti, another researcher at the Jet Propulsion Laboratory, said in a statement.