The Sacramento Valley, the northern part of the Central Valley, spreads through 10 counties north of the Sacramento–San Joaquin River Delta (Delta). Sacramento is an important agricultural region, growing citrus, nuts and rice among many other crops.
Water flows from the Sierra Nevada Mountain Range to the region’s two major rivers — the Sacramento and American – and west into the Delta. Other rivers include the Cosumnes, which is the largest free-flowing river in the Central Valley, the lower Feather, Bear and Yuba.
The Sacramento Valley attracts more than 2 million ducks and geese each winter to its seasonal marshes along the Pacific Flyway. Species include northern pintails, snow geese, tundra swans, sandhill cranes, mallards, grebes, peregrine falcons, heron, egrets, and hawks.
[Oroville] Dam operators gradually scaled back water releases to zero over a six-hour period, providing breathing room for construction crews trying to clear debris from a badly choked Feather River channel and restart the dam’s critically needed hydroelectric plant.
For three weeks, Oroville Dam’s fractured main spillway and the surrounding hillsides have taken a nearly nonstop pounding. The stunning waterfall crashing down what’s left of the 3,000-foot concrete span has split the spillway in two and carved massive canyons on either side.
Oroville Dam operators plan to halt water releases from the dam’s battered spillway Monday in order to ramp up efforts to remove a debris pile that’s preventing them from restarting a hydroelectric plant.
Billions of dollars in flood projects have eased fears of levee breaks near California’s capital and some other cities, but state and federal workers are joining farmers with tractors in round-the-clock battles this week to stave off any chain-reaction failure of rural levees protecting farms and farm towns.
Nine days ago, with the Oroville Dam under stress and battered by more harsh weather, Gov. Jerry Brown said he had no immediate plans to visit the site, suggesting “I don’t think they need politicians fluttering around.”
Lake Oroville will partially reopen on Thursday, nearly two weeks after more than 180,000 Northern California residents evacuated their homes and the lake area closed due to fears that the emergency spillway at Oroville Dam could fail.
The Department of Water Resources plans to remove at least some of the debris at the bottom of the Oroville Dam spillway and study the structure, but just aren’t sure when they’ll have a chance to do that.
Not far from the main drag through Oroville, a dozen local business owners and city officials faced each other in a hotel lunchroom Tuesday. They sought to begin developing an advertising campaign to transform a barrage of negative images and news reports about frantic efforts to prevent catastrophic flooding into a lucrative tourist attraction, albeit after the Feather River Basin’s rainy season ends in April.
After the state Department of Water Resources reached its goal early Monday morning of lowering the water level at Lake Oroville by 50 feet, officials said heavy rains would likely cause lake levels to rise several feet.
Twelve years ago, widespread destruction from Hurricane Katrina on the Gulf Coast helped compel federal engineers 2,000 miles away in California to remake a 1950s-era dam by constructing a massive steel-and-concrete gutter that would manage surging waters in times of torrential storms.
The badly damaged main concrete spillway at Oroville Dam was pounded by massive volumes of stormwater this month, but its failures occurred well short of the maximum flow that engineers designed the system to handle.
Communities just downstream of California’s Lake Oroville dam would not receive adequate warning or time for evacuations if the 770-foot-tall dam itself – rather than its spillways – were to abruptly fail, the state water agency that operates the nation’s tallest dam repeatedly advised federal regulators a half-decade ago.
Water releases through the damaged main spillway at Oroville Dam were scaled back Thursday to allow crews to reach and remove a pile of debris that has built up at the bottom of that chute, officials said.
Feeling confident they’ve created sufficient empty space in Lake Oroville for the time being, state Department of Water Resources officials said they reduced spillway outflows so they could address another looming challenge: restarting the dam’s hydroelectric plant, which can release additional water when operational.
Jeffrey Mount, a leading expert on California water policy, remembers the last time a crisis at the Oroville Dam seemed likely to prompt reform. It was 1997 and the lake risked overflowing, while levees further downstream failed and several people died.
Rainwater erosion alongside the Oroville Dam’s main spillway appears to have contributed to the heavy damage that prompted a crisis, forcing more than 100,000 to be evacuated from their homes, a report reviewed by The Times showed.
Officials raced to drain more water from a lake behind battered Oroville Dam as new storms began rolling into Northern California on Wednesday and tested the quick repairs made to damaged spillways that raised flood fears.
Protecting and restoring California’s populations of threatened and endangered Chinook salmon and steelhead trout have been a big part of the state’s water management picture for more than 20 years. Significant resources have been dedicated to helping the various runs of the iconic fish, with successes and setbacks. In a landscape dramatically altered from its natural setting, finding a balance between the competing demands for water is challenging.
At churches, fairgrounds and other makeshift shelters, thousands of Californians packed what belongings they had into garbage bags and suitcases to return home Tuesday, two days after they were told to flee the threat of massive flooding from a dam’s damaged spillway.
Six months before rushing water ripped a huge hole in a channel that drains a Northern California reservoir, state inspectors said the concrete spillway was sound. As officials puzzle through how to repair Oroville Dam spillway, federal regulators have ordered the state to figure out what went wrong.
With both spillways badly damaged and a new storm approaching, America’s tallest dam on Tuesday became the site of a desperate operation to fortify the massive structures before they face another major test. … In a sign of the progress made Tuesday, officials downgraded the evacuation order to a warning, allowing all evacuated residents to return home.
There’s another storm bearing down on troubled Oroville Dam, set to begin late Wednesday. But state officials say they believe the precipitation will be mild enough – and the reservoir empty enough – to handle this latest challenge.
A huge Northern California reservoir, held in place by a massive dam, has always been central to the life of the towns around it. Now the lake that has brought them holiday fireworks and salmon festivals could bring disaster.
Gov. Jerry Brown asked the Trump administration for a federal disaster declaration for the emergency at Oroville Dam on Monday evening, citing the impending arrival of more storms and the potential need to resort again to the dam’s emergency spillway, which has been severely eroded.
As California waited Monday night to see if President Donald Trump would grant Gov. Jerry Brown’s request for emergency funding for 10,000 evacuees who lived in the shadow of the Oroville Dam, FEMA began preparing for the worse.
California Gov. Jerry Brown, appealing to the Trump administration for direct federal assistance on the Oroville Dam’s emergency spillway, said Monday that he remains encouraged that the state and federal government can work constructively.
Water levels dropped Monday at California’s Lake Oroville, stopping water from spilling over a massive dam’s potentially hazardous emergency spillway after authorities ordered the evacuation of nearly 200,000 people from towns lying below the lake. California Department of Water Resources officials are waiting for the light of dawn to inspect an erosion scar on the spillway at the Oroville Dam, the nation’s largest.
More than a decade ago, federal and state officials and some of California’s largest water agencies rejected concerns that the massive earthen spillway at Oroville Dam — at risk of collapse Sunday night and prompting the evacuation of 185,000 people — could erode during heavy winter rains and cause a catastrophe.
As a test run at the Oroville Dam spillway commenced Wednesday afternoon, the director of the Department of Water Resources said at a press conference in Sacramento he expected the bottom of the spillway to be eroded away by spring, with a replacement completed by fall.
State engineers gingerly began releasing water again through the damaged Oroville Dam spillway Wednesday in a controlled test to see how much water the scarred facility could handle, as reservoir levels continued to climb behind the critical flood-control structure.
After a few nice days, stormy weather is due to return Wednesday night and stick around into next week. In preparation for that, the Department of Water Resources kicked up releases from Oroville Dam by a third Tuesday afternoon, to make room for runoff in Lake Oroville.
Northern California is on track to break rainfall records. … But you wouldn’t know the region has experienced an exceptionally wet winter looking at the steep, dry shores ringing the Sacramento region’s largest reservoir, Folsom Lake.
In the years before California’s drought, it wasn’t unusual for Sacramentans to spend winters worrying about floods. After more than five years with little rain, the past two weeks delivered a bracing reminder that the region remains vulnerable to rising waters and overtopped levees.
ARkStorm stands for an atmospheric river (“AR”) that carries precipitation levels expected to occur once every 1,000 years (“k”). The concept was presented in a 2011 report by the U.S. Geological Survey (USGS) intended to elevate the visibility of the very real threats to human life, property and ecosystems posed by extreme storms on the West Coast.
Tuesday, I visited a couple of projects in the Sacramento Valley that are aimed at helping salmon on both ends of the life cycle. They are collaborations between farmers and environmentalists, two groups that are often at each other’s throats in the never-ending battle over who is entitled to California’s precious water supply.
Excavators, loaders and dump trucks began moving earth around the Sacramento River this week as part of the latest effort to help endangered chinook salmon. … Money for the project comes from the federal Central Valley Project Improvement Act.
For the past two years state fisheries officials have asked the state Fish and Game Commission to close on an emergency basis a 51/2-mile section of the river to fishing from April 1 to July 31 to protect spawning winter-run chinook salmon.
An hour north of Sacramento, in a ghost town tucked into a remote mountain valley, California is poised to build a massive new reservoir – a water project of a size that hasn’t been undertaken since Jerry Brown’s first stint as governor in the 1970s. Sites Reservoir, all $4.4 billion of it, represents an about-face in a state where drought has become the norm and water users are told to scrimp and save.
Dr. Jay Lund, director of the UC Davis Center for Watershed Sciences, is the godfather of research on the Sacramento-San Joaquin Delta. When he says it took John Sutter eight days to wind his way from San Francisco Bay through the Delta to find the narrow Sacramento River in 1839, you can bet that’s the truth. … Now, water agencies have joined together again to launch the River Arc Project.
Rains have drenched Northern California, where most of the state’s largest reservoirs are located. The state had the second wettest October since the Department [of Water Resources] began keeping records in 1921.
Last week, folks who are in the inner circle of the plans for Sites Reservoir held a get-together in Maxwell to show off the group’s new office and new logo. Also new is a website, that talks about all things Sites Reservoir — a construction schedule, facts sheets and a list of interested participants (see sidebar).
Signaling a cutback in water supplies for farming and cities, California regulators on Wednesday issued a new scientific analysis that proposes overhauling the management of the Sacramento River and devoting more water to Northern California’s dwindling fish populations. … The proposal comes a month after the water board called for people to take far less water out of the San Joaquin River system.
A project to rebuild the Wallace Weir, a century-old levee northwest of Sacramento, could help both farmers and salmon. Bringing together a coalition of unlikely allies, it promises a more sophisticated approach to water management.
California has been trying to fill its reservoirs for 5 years, and it will get a little help from a storm expected to hit later this week. Right now, Lake Shasta is only at 60% capacity and Lake Oroville is at 44%, with other reservoirs across the state even lower.
The Yuba County Water Agency board of directors on Tuesday unanimously voted to reject an initiative to redistribute revenue generated from groundwater substitution transfers — that is the sale of surface water which is then replaced locally by pumped water. … The initiative, known as the Groundwater Fairness Act, was submitted to the agency on Sept. 30.
At this point in the Sacramento River restoration game, one big fix will not change the outlook for endangered and threatened salmon. However, fish scientist Dave Vogel hopes that a series of smaller fixes will make a big difference.
Less than 50 miles northeast of Chico, California, begins the 93-mile Butte Creek – a tributary of the Sacramento River. It is named after Butte County, which was in turn named for the nearby volcanic plateaus, or “buttes,” and travels through a massive canyon on its way southwest to the Sacramento Valley.
As a watershed, it drains about 800 square miles, both for agricultural and residential use. The upper watershed is dominated by forests, while the lower watershed is primarily agricultural.
Explore the Sacramento River and its tributaries through a scenic landscape as we learn about the issues associated with a key source for the state’s water supply. All together, the river and its tributaries supply 35 percent of California’s water and feed into two major projects: the State Water Project and the federal Central Valley Project.
This 3-day, 2-night tour travels across the Sacramento Valley and follows the river north from Sacramento through Chico to Redding and Lake Shasta, where participants take a houseboat ride.
Go deep into California’s water hub and traverse the Sacramento-San Joaquin Delta, a 720,000-acre network of islands and canals that support the state’s water system and is California’s most crucial water and ecological resource. The tour makes it way to San Francisco Bay, and includes a ferry ride.
Water from Northern California flows through the Delta and heads south to provide drinking water for more than 25 million Californians and irrigation to 3 million acres of farmland that contribute to the state’s $46 billion agricultural industry.
As you grunt up the path in the depths of Deer Creek Canyon, the incongruous sound of a large piece of gasoline-driven machinery becomes audible over the rhythmic rumbling of the creek. … But it’s one of those things where a temporary intrusion into the wild may end up enhancing the wild for the long term.
The U.S. Army Corps of Engineers has the go-ahead to begin a nine-part levee-improvement project for the Natomas Basin in Sacramento. … The levees are part of a system that diverts watershed runoff into the American River.
California is the country’s second-largest rice producer, after Arkansas, and the $5 billion crop is particularly well suited to the Sacramento Valley’s clay soil. … Although seeing thousands of acres of rice fields covered shin-deep in water might seem wasteful to some, not everyone sees it that way.
Regional groundwater leaders took some necessary next steps this week on the road to groundwater management and sustainability. In less than a year, local water leaders need to decide who will oversee state-mandated groundwater plans.
Plans to build the Sites Reservoir have been in the works since 1957, and if it is eventually approved, work on the project probably would not be complete for another 10 to 12 years, according to Jim Watson, the Sites Reservoir Project general manager.
With habitat for California waterbirds drying up, conservation groups and rice farmers are collaborating to flood fields and enhance waterbird habitat on roughly 550,000 acres of California’s rice fields.
Calling all water users: If you would like to buy in on water from a future Sites Reservoir, now is the time. Plans for Sites Reservoir are moving forward, with a deadline of June 2017 to ask the state Water Commission to pay for half of the estimated $4.4 billion construction cost.
Federal officials on June 29 released a temperature management plan for the Sacramento River that schedules releases from Shasta Lake in a way they believe provides adequate temperatures for winter-run Chinook salmon without cutting farm water deliveries.
With this year’s storms helping to refill the Sacramento region’s lakes and reservoirs, local water district officials and state regulators are diverting and percolating stormwater from Cache Creek into the Yolo County canal system to recharge groundwater supplies used by local farmers, city residents and UC Davis.
By this time next year a lot of work needs to be done on a regional groundwater sustainability plan. … Every big task needs to start somewhere, and this week the public is being asked to join the conversation.
Drought-stressed Capitol Park will get $1.7 million for a reclaimed water project in the new state budget, even though the Legislature’s nonpartisan fiscal analyst concluded that the project won’t pencil out for more than a century and a half.
A new era of groundwater management began with the Sustainable Groundwater Management Act (SGMA), which aims for local and regional agencies to develop and implement sustainable groundwater management plans with the state as the backstop.
When fully implemented, SGMA is expected to effectively administer groundwater pumping, though it remains to be seen if some of the damage done to aquifers is irreparable. Without SGMA, however, there is no hope for management.
The sounds of watercraft and families enjoying Lake Shasta on Sunday carried across the water against a vibrant backdrop of the tree line. The scene is a far cry from last year’s low water levels on the lake, which became a visual indicator of the state-wide drought and the impact to the local environment.
An estimated 1,380,000 salmon fry were to be loaded up into five 2,800-gallon tanker trucks this week at the Feather River Fish Hatchery to make their way to San Pablo Bay as part of an assisted migration.
The Sacramento Regional County Sanitation District hired Dragados USA to build a biological nutrient removal station, part of a larger $1.5 billion to $2 billion effort to meet stricter state standards on wastewater pollutants discharged into the Sacramento-San Joaquin Delta.
Despite some reservations, the Butte County Board of Supervisors unanimously backed a conditional letter of support for the Sites Reservoir project. The letter, to be sent to the California Water Commission and the Sites Joint Powers Authority, called for using Proposition 1 money to further investigate the off-stream project west of the Sacramento River in Colusa and Glenn counties.
The rains this winter were more or less than expected, depending on where you live and what you expected. … The unequal distribution of water continues as state and federal water leaders allocate surface water supply.
Years of rumbling dump trucks and backhoes placing 2.75 million tons of rock “armor” along nearly a dozen miles of riverbank is an unpleasant thought for many who bike, jog, fish, bird-watch, golf, boat and swim along the lower American River Parkway.
With Lake Oroville rising more than 82 feet this month, the water level is now cutting into the buffer needed for flood control. … Other north state reservoirs have increased their outflows as they encroach on flood control limits.
Conaway Ranch, a 17,000-acre farm in which the Tsakopoulos family acquired controlling interest in 2010, said Monday it will work with water-use experts from Israel to experiment with drip irrigation on a small portion of its rice fields.
There may be big problems lurking in the Sacramento River for the young fish that officials want some day to hatch in Battle Creek. That was the message that some river anglers delivered to federal fisheries officials at a meeting in Red Bluff on Tuesday night.
Seasonal storms that have raised the region’s reservoir water levels to their highest points in the last two years could bolster this year’s run of Chinook salmon, water and wildlife officials said Wednesday.
Chris Rufer, 66, never has been keen on big government and always liked an underdog fight. … That perseverance has Rufer entangled in a $1.5-million battle with water regulators over waste and odors from his tomato processing plant in the Sacramento Valley town of Williams, the largest facility of its kind in the country.
Water from the rain-swollen Sacramento River began flowing over the Fremont Weir and into the Yolo Bypass on Saturday morning, according to monitors at the California Nevada River Forecast Center, part of the National Oceanic and Atmospheric Administration.
For more than 70 years, Coleman National Fish Hatchery has raised young salmon and steelhead trout, and released them into Battle Creek so they can migrate out to the Pacific Ocean. But there are changes happening in Battle Creek.
A few dozen baby salmon that spent the past two weeks contentedly eating – and growing – in the invertebrate stew of a flooded rice field were netted Friday, dumped into coolers and hauled by pickup several miles to a drainage canal and to the Sacramento River.
Even with unseasonably warm temperatures and little to no rain in the forecast for at least the next seven days, the operators of Folsom Dam are going to more than double the flows in the lower American River to protect against flooding.
The discovery of an invasive mudsnail downstream of the Table Mountain Boulevard bridge in Oroville, has prompted state officials to urge Feather River users to decontaminate equipment. … Officials are also setting up decontamination protocols to keep the mudsnails from entering the nearby Feather River Fish Hatchery.
Acknowledging the challenges posed by the hot, dry climate endemic to much of inland California, state drought regulators Friday proposed easing the water-conservation rules for Sacramento and other communities where it takes extra water to keep trees from dying.
Water experts in Yolo County are actively monitoring water wells to measure the groundwater supply. … The groundwater supplies about 30 percent of the water in our region, according to the Northern California Water Association, which represents water rights holders in the Sacramento Valley.
The funds, from the Department of Water Resources’ Flood Systems Repair Program, will allow the Sutter Butte Flood Control Agency to improve a section of levee near Laurel Avenue south of Star Bend, further expanding a multi-year project to raise the flood protection in urban and rural areas to 200- and 100-year levels, respectively.
Scientists were knee deep in the Feather River on Friday, systematically injecting 20,000 fertilized salmon eggs into the bottom of the river. … The eggs were injected near the Oroville Wildlife Area, just a few miles north of Gridley.
The State Water Resources Control Board meets Monday on potential changes to mandatory water conservation targets should the drought persist into 2016. … The Regional Water Authority is joining several other water providers from across the state to propose an objective, science-based approach to adjust water conservation targets for climate.
Explore the Sacramento River and its tributaries through a scenic landscape as we learn about the issues associated with a key source for the state’s water supply. All together, the river and its tributaries supply 35 percent of California’s water and feed into two major projects: The State Water Project and the federal Central Valley Project.
This 3-day, 2-night tour travels across the Sacramento Valley and follows the river north from Sacramento through Chico to Redding and Lake Shasta, where participants take a houseboat ride.
It will take dozens of rain storms to alter the effects of California’s four-year drought. … With Folsom Lake now at just 15 percent of capacity, water experts are once again urging Californians to conserve.
The issue of the governor’s request came to light as part of a lawsuit against the state by farmers who accuse the state of doing an inadequate job of preventing water pollution from oil and gas drilling.
Visitors to the Feather River Fish Hatchery will find new signs with updated information. The signs replace displays that were erected when the hatchery first opened in 1967, according to Penny Crawshaw, fish hatchery manager.
Right now, migrating waterfowl are looking for wet places to land and feed. … This week, several Sacramento River farm water districts finalized a deal with the federal Bureau of Reclamation to use water later in the year, to provide water for birds in November.
One of the last wild runs of chinook salmon in California is sinking fast amid the four-year drought and now appears perilously close to oblivion after the federal agency in charge of protecting marine life documented the death of millions of young fish and eggs in the Sacramento River.
Construction is nearly complete on a $2.5 million fish barrier at the Knights Landing Outfall Gates. The project will block migrating salmon from straying off course as they make their way up the Sacramento River.
Before the founders of the Family Water Alliance began installing metal screens at the end of the big pipes that draw water from the Sacramento River to irrigate Colusa County’s rice and vegetable fields, seasonal salmon runs often included sizable helpings of fresh fish flopping in the brown dirt of farm furrows. The pumps that transported water were powerful enough to suck migrating fish into the pipes and toss them out the other end, typically startled and very much alive.
Wildlife managers are worried again this year: Will there be enough wet habitat for millions of birds in the Sacramento Valley? Before the drought, 250,000-300,000 acres of California rice lands was flooded each winter.
The last hurdle in relicensing the Oroville Dam facilities may be only a few more months away, according to the National Marine Fisheries Service. The agency has been working on a biological opinion to determine how the dam and facilities downstream could impact endangered and threatened fish and other issues.
Even as Sacramento waits for the soaking El Niño forecast to hit this fall, Folsom Lake continues to lose water and will almost certainly fall Thursday to its lowest level in more than 20 years, government data show.
What’s holding up the relicensing of Oroville Dam facilities? Fish. Specifically, an opinion on how three threatened species might be affected, according to local Department of Water Resources officials.
A group of Northern California water users, and now investors, have taken the next big step in the plans to build a new reservoir in Northern California. Jim Watson has been hired as the new and first general manager of the Sites Reservoir Joint Powers Authority, sitesjpa.net.
Taxed by years of drought, the lake [Folsom Lake] is currently filled to 19 percent of its total capacity, with officials from the federal Bureau of Reclamation foreseeing it may yet drop below the 1977 record-low of 150 acre feet. Low water levels change more than the lake’s aesthetics.
The gates will open Monday on the fish ladder to the Feather River Fish Hatchery in Oroville, beginning the two-month process that will see 15 million chinook salmon eggs harvested for further continuation of the species.
More than 200,000 rainbow trout suffocated in a matter of minutes Tuesday at the American River Hatchery near Rancho Cordova due to an unexpected release of gunk from Folsom Dam that clogged water intakes.
Last summer, a narrow, rock-rimmed stretch of the Sacramento River near here turned into a mass graveyard for baby salmon. Upstream releases of water from Shasta Dam were so warm that virtually an entire generation of endangered winter-run Chinook was wiped out.
The Glenn County Board of Supervisors Tuesday passed a ban on new well permits, which will slow but not halt the number of new wells drilled in the primarily agricultural county. … One project that will be put on hold, at least for the next six months, is the five new wells planned by the Glenn-Colusa Irrigation District, the largest supplier of ag water in the area.
Until things are back to normal, some folks in Glenn County want to see a halt to new well drilling. Tuesday, the issue will be before the Glenn County Board of Supervisors, at the request of farmer Sharron Ellis.
State officials are estimating that Bidwell Canyon’s three available concrete lanes will close this week when the lake level drops 220 feet below the top of Oroville Dam. The dam is considered full at 900 feet above sea level.
Almond farmers who planned a mid-summer getaway may need to put those plans on hold. Already the nuts are at the phase of hull split, which comes just before its time to shake the trees. Butte County Agricultural Commissioner Richard Price said all crops are early this year.
Almost half of the city [of Sacramento] utility’s nearly 126,000 residential connections don’t have meters tracking and tallying how much they use. Because of this, there’s no way of precisely knowing how much water goes missing because of leaky pipes, loose connections, theft or at city hydrants.
It’s hard to know how many people are scrambling to get water this summer. … If the long-term solution is waiting for well driller to deepen a well, the quick-fix is calling a man with a truck who will deliver water.
By now, most customers of a water district know the new conservation rules. … However, what about people who live in more rural areas and in smaller water districts that have different water conservation rules?
While harvesting 350 acres of wheat, farmer Deke Dormer collected 819 eggs in his field. The eggs were then placed in egg cartons, taken to incubators for hatching, and will be returned to wetlands when the ducklings are old enough to survive on their own.
For salmon to survive in Butte Creek, the fish will need as much water as they can get from Pacific Gas and Electric Co. … PG&E showed the Enterprise-Record that water system Tuesday during a helicopter tour.
Four years of dry, hot weather have raised lake temperatures and depleted many of the state’s reservoirs. In response, the state has cut flows from Lake Shasta to protect an endangered species of salmon and raised flows from Folsom Lake to prevent salt water from intruding into the Delta.
The new state rules for water conservation kicked in June 1, requiring residential customers in Chico to use 32 percent less water than they used during the same months in 2013. Oroville customers have to use 28 percent less.