California water officials are on the verge of making an unusually drastic pronouncement in response to the ongoing drought: Ordering hundreds of water agencies, farmers and other property owners to stop diverting water from rivers in which they have longstanding water rights.
Within a matter of days, the State Water Resources Control Board is expected to issue curtailment orders to junior water rights holders, meaning they would be required to stop diverting water from streams and rivers, or reduce those diversions. The intent is to heed state law, which requires that available water, during times of scarcity, be reserved for those with senior water rights and for the environment.
The agency recently posted data on its website estimating when curtailments might be required in certain watersheds, depending on runoff conditions, water demand and the type of water rights. Such orders are now pending for junior water rights those issued after 1914 on nine rivers and their watersheds: the Stanislaus, Tuolumne, Merced, Yuba, Kern, Kings, Kaweah, Tule and Middle Fork Eel.
Pending means the order could come any day, said John OHagan, supervisor of water rights enforcement at the water board. Such widespread curtailments have not been ordered since the drought of 1977, he said, and are virtually a sure thing this year.
Based on our analysis, I would think there will be curtailments of certain water rights, OHagan said. Because the snowmelt is not there, the precipitation is not there.
The city of Sacramento, which draws its water from the Sacramento and American rivers, could be affected as soon as May 15. Thats when the state may order curtailments for other post-1914 water rights, including the Russian River above Healdsburg and the entire watershed of the Sacramento and San Joaquin rivers, the largest watershed in the state.
If that happens, the city may call for more severe water rationing than the 20 percent conservation order already imposed, said city spokeswoman Jessica Hess.
The city also has some pre-1914 senior water rights that would not be affected by initial curtailments, although conservation would be required to continue serving the whole city using these rights alone.
Many cities in the Sacramento region lack water rights, and buy their water from the state and federal governments. Those contracts could be affected as well, because the state and federal governments have water rights that also could be curtailed.
In most cases, the curtailment orders wont mean the water supply is completely shut off. Like Sacramento, most water users have other supplies to fall back on if their primary water right is cut back. Some can pump groundwater or rely on water already held in reservoirs. Even so, curtailments will require sacrifice, particularly among some farming communities, said David Guy, president of the Northern California Water Association, which represents property owners and water agencies in the Sacramento Valley.
Theres definitely going to be some pockets where these curtailment notices will hit people hard, said Guy. If they dont have access to other types of water, then theyre going to be affected.
The looming curtailments indicate how severe the drought has become. The statewide snowpack was just 20 percent of average as of Wednesday, meaning there wont be a lot of runoff in streams over the long, hot summer months. The snowpack already is melting rapidly, thanks to early hot spells.
Stream flow gauges maintained by the U.S. Geological Survey also tell the tale. Out of 230 gauges in California, 69 percent on Wednesday reported below normal flows, up from 46 percent a month ago.
Water rights are held by a broad spectrum of California entities, from the individual rural homeowner to large users such as farmers, energy companies and state and federal agencies that deliver water to millions of urban residents. Normally, a water right represents a very secure supply because it generally allows pumping directly from a stream at will. No one else controls a valve or demands a fee. Although many rights include limitations on water volume and time of year, it is essentially a guaranteed supply except in very bad drought years.
The purpose of the first curtailments is to preserve water for senior users, which have a legally superior right to access any water that might be available. But by June, the water board estimates, even these senior diverters could face curtailments. The goal at that point would be to preserve water for essential health and safety purposes, and for wildlife and habitat.
Curtailments occur so rarely that they fall outside the normal realm of water supply planning, said Curt Aikens, general manager of the Yuba County Water Agency, which could see its water rights in the Yuba River curtailed. A curtailment could halt all water diversions, or only a percentage, or only at certain times. The details remain unclear.
Part of the problem is, we dont know what the curtailment order will say, said Aikens. You do all this planning and you try to get everything right, and its like the goalposts have changed. On the other hand, the states got a big issue to deal with.
Water used for hydroelectric power generation would be exempt from curtailment, because that water merely passes through turbines and is returned to the stream. A curtailment also would not affect water already stored in reservoirs, although additional storage would not be allowed, OHagan said.
Under the order, anyone subject to a curtailment who has no other supply would still be allowed to divert as much as 50 gallons per day, per person, for public health and safety needs.
Another category of water users known as contractors already has been told to expect severe cutbacks. These entities are generally middlemen that have no water rights. Instead, they buy water from state and federal agencies, which hold water rights, and then sell that water to farmers or homeowners. This is how most Californians get their water.
Some contractors have already been told they will get zero deliveries, including some farm irrigation districts in the San Joaquin Valley. Others will get as little as 5 percent of normal deliveries, including major urban areas in Silicon Valley and Southern California that buy water from the State Water Project.
Montna Farms, a family rice-growing company in Yuba City, has decided to fallow about 42 percent of its rice-growing acreage this year, because it expects its water rights to be curtailed, said managing partner Nicole Van Vleck. That means it will probably hire fewer seasonal employees for planting and harvesting, or hire them for a shorter period of time.
Rice planting season is underway now. Van Vleck said it normally takes about a month to plant all of the companys lands. This year it will be done in about two weeks, because about 1,600 acres farmed by the company in the Sutter Bypass are being left unplanted.
We cant plant rice and not have water for June, July and August and expect to get a crop, she said. Its unprecedented on our ranch. Ive been here 20 years and Ive never had any sort of curtailment before.
Mike Jackson, an attorney with the California Water Impact Network, an environmental group, said there are no guarantees curtailments will increase water supply for anyone else, or for wildlife. In part, that is because many property owners have wells near streams that are actually tapping the streams subsurface flow. In effect, some will continue tapping the same water supply, only using a well instead.
There are wells in the underflow of every stream in California, Jackson said. I expect to see a lot of streams disappear underground this year.
The states powers to actually enforce curtailment orders are limited. Recent legislation more than doubled potential fines for violating a curtailment order during the drought, but the water board has no ability to monitor individual water diversions in real-time. Curtailment orders would start with letters to affected water users that include a deadline to comply. The state would then attempt to assess compliance through monitoring of stream conditions and targeted field inspections.
We are not peace officers, so we do not have the right to trespass, OHagan said. We will be looking for people that were curtailed to make sure water is getting to the people that have senior rights. There will be a field presence and inspections.
Call The Bees Matt Weiser at (916) 321-1264. Follow him on Twitter @matt_weiser.