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[Water_news] 2. DWR'S CALIFORNIA WATER NEWS: SUPPLY - 12/5/07

Department of Water Resources

California Water News

A daily compilation of significant news articles and comment 

 

December 5, 2007

 

2. Supply

 

WINTER WEATHER:

Typically wild Sierra weather tame so far; Current weather pattern gives little hope for storms - Nevada Appeal

 

WATER SHORTAGE:

Rain may help water crisis in RV - Ukiah daily Journal

 

WATER RECYCLING:

Editorial: Transforming wastewater; Thirsty L.A. should take a clue from Orange County - Los Angeles Times

 

 

WINTER WEATHER:

Typically wild Sierra weather tame so far; Current weather pattern gives little hope for storms

Nevada Appeal – 12/3/07

By Tanya Camino, Sun News Service

 

INCLINE VILLAGE — With Thursday’s snowpack at 4 percent of average and Lake Tahoe two feet lower than last year at this time, the calendar year 2007 is in the running to be the second driest winter for weather records.

However, weather in the Sierra is always a wild ride.

“We’re definitely way, way down. If December got zero precipitation, which would really be amazing in Tahoe, this would be the second driest year in 70 years (for Reno),” said Jim Ashby, climatologist with the Western Regional Climate Center in Reno’s Desert Research Institute.

The driest year was 1976 with 9.34 inches of precipitation recorded at Lake Tahoe’s only outlet, the Truckee River in Tahoe City. Right now, 14.71 inches has been recorded in Tahoe City for the year - the long-term average is 32.6 inches of precipitation.

But as weather watchers warn, you never know in the Sierra.

The average precipitation in Tahoe City for December is 5.66 inches; however in 1989, there was 0 inches and in 1964, there were 27.55 inches in the wettest month of Tahoe City data going back 94 years.

“The point is, it could happen, it could be a monster month,” Ashby said.

His cohort at the Western Regional Climate Center, interim director Kelly Redmond, however, says it is not likely.

“The types of patterns we are in is not conducive to bringing moisture to the Sierra,” Redmond said.

A strong La Nina is sending moisture north of California, or spinning it inland toward Arizona. In La Nina years, Redmond said, the farther south one goes, the drier it gets.

“The guts of winter is December, January and February,” he said.

The National Oceanic and Atmospheric Administration released its three-month forecast for the Western United States on Nov. 15, showing Southern California as drier than normal, with Tahoe about 33 percent drier than normal.

“It’s not looking good at the moment. There are no strong systems moving in to jolt us out of the doldrums,” Redmond said.

The start to the water year, which begins Oct. 1, was helped by storms in October, but November has been 17 percent of average precipitation.

“October contributed a little more than its share. November is falling down on the job. It may get its license revoked. We’re getting rid of it and we’ll try again in December,” Redmond joked.

He said Northern Nevada and California residents should be more worried about the lack of snowpack than precipitation because that is drinking water for next summer.

Ashby said “there’s no doubt” we’re in a drought.

Federal Watermaster Garry Stone said the reservoirs in the Truckee River water system are lower than normal, except for Stampede, and Lake Tahoe will continue to drop if no storms are in sight. Lake Tahoe is 2.68 feet lower than last year at this time.

Yet, the Sierra’s reputation for the unpredictable could bode well.

“With a La Nina there is not a strong tendency to be wet or dry. But the only thing we can say with a little bit more certainty is that there is a somewhat higher chance of major events,” Redmond said. “The big floods in the Sierra are from La Ninas. Four out of the top five floods have been La Nina.”

Two of the more recent La Nina flooding events were 1985-86 and 1996-97.

“As far as the numbers are concerned, yeah, but to me we’re always in a drought even in a normal year,” Ashby said, adding that Reno only averages 8 inches of rainfall a year and has only 2.86 inches of precipitation now.

However, drought is hard to quantify, Redmond explained.

‘Drought is a touchy word in California. There’s drought with a little d and drought with a big D, which is declared by the California Department of Water Resources,” Redmond said. At that point, water is cut off to customers.

Jay Lund, a University of California, Davis professor and expert in water systems, said “a drought is if you’re not getting as much water as you like.”

“For this climate, you don’t know if you’re in a drought for a couple of years. People sometimes talk about it being a creeping disaster,” Lund said.

He said official droughts were 1928-34, 1976-77, and 1988-92.

Lund will be speaking about water management at 5:30 p.m. Wednesday at the UC Davis Tahoe Environmental Research Center in Incline Village.

“I think people are starting to wonder if this is the beginning of a drought,” Lund said.

Last year was a dry year, but the impacts were not felt because the 2005-06 year was such a high water year. If this year is dry, the back-to-back dry years will make an impact.

Federal Watermaster Garry Stone said the reservoirs in the Truckee River water system are lower than normal, except for Stampede, and Lake Tahoe will continue to drop if no storms are in sight. This week, at 6224.98 elevation feet, Lake Tahoe was 2.68 feet lower than last year at this time.

“We had a reserve and it got pretty well used up. (The reservoirs) are going into the winter in a diminished capacity,” Redmond said.

Yet, the Sierra’s reputation for the unpredictable could predictably bode well.
“With a La Nina there is not a strong tendency to be wet or dry. But the only thing we can say with a little bit more certainty is that there is a somewhat higher chance of major events,” Redmond said. “The big floods in the Sierra are from La Ninas. Four out of the top five floods have been La Nina.”

Two of the more recent La Nina flooding events were 1985-86 and 1996-97.

There are some, however, who no longer wait for Mother Nature’s whims. Sierra ski resorts now rely on snowmaking for their winter coverage.

“We don’t get too worried for a drier winter, as long as the temperatures stay cool, we make snow,” said Kayla Anderson, marketing coordinator at Diamond Peak Ski Area. #

http://www.nevadaappeal.com/article/SS/20071203/NEWS/71203002/-1/REGION

 

 

WATER SHORTAGE:

Rain may help water crisis in RV

Ukiah daily Journal – 12/5/07

 

More than an inch of rain fell on the Ukiah area Monday night, raising hopes that a normal rain season will make emergency water conservation measures unnecessary.

 

"If things go well, we'll just squeak by another close call," said Bill Koehler, general manager for the Redwood Valley Water District.

 

The Redwood Valley Water District Board is planning to declare a water emergency next week because low water storage in Lake Mendocino has forced them to cut water withdrawals from the reservoir in half.

 

Despite Monday's rain, and more forecasted for the end of the week, Koehler said the board will still be holding it's emergency meeting and may still declare an emergency, even if rainfall raises the level of water in the lake.

 

Last month, storage in Lake Mendocino had fallen below 30,000 acre-feet, which triggered a clause in the RVWD agreement with the Sonoma County Water Agency that forces the district to cut the amount of water it takes from Lake Mendocino by 50 percent of the average per month for the last three years.

 

As of 4 p.m. Monday storage in Lake Mendocino was at 28,622 acre-feet.

 

Koehler said the week's rain would lend support to the board's decision to take a softer approach to the conservation problem in Redwood Valley.

 

If the board votes to declare an emergency Tuesday, it will have the power to activate an ordinance that allows for mandatory conservation measures, including setting a limit to the amount of water available to a household, and giving the district the option of shutting off water for violators.

 

"We're certainly hoping to not have to use those harsh measures," Koehler said.

 

Currently, the board is planning to shut off all agricultural water and ask residential consumers to increase their rate of conservation to 40 percent. The district has reached 30 percent conservation through voluntary measures.

 

According to the National Weather Service, 1.24 inches of rain fell on Lake Mendocino during Monday's storm. More rain was expected in Ukiah on Tuesday afternoon. Wednesday was predicted to be dry and clear with rain to return on a second storm front Thursday. More rain is expected for next week. #

http://www.ukiahdailyjournal.com/ci_7640952

 

 

WATER RECYCLING:

Editorial: Transforming wastewater; Thirsty L.A. should take a clue from Orange County

Los Angeles Times – 12/5/07

 

The Orange County Water District's new $480-million Groundwater Replenishment System is set to launch operations Dec. 15. It will take treated wastewater -- a.k.a. sewage -- from an adjacent treatment plant, force it through state-of-the-art microfiltration, reverse-osmosis and ultraviolet-ray purification systems, and then dump the resulting 70 million gallons of purified water a day into a system of ponds in Anaheim, from which it will percolate slowly into an aquifer and into the county's drinking water supply.

When Los Angeles tried to do something like this a decade ago, constructing a $55-million wastewater reclamation plant in the eastern San Fernando Valley, citizens flew off the handle, fretting about the prospect of water flowing from "toilet to tap." Politicians who had supported the project reversed course in 2000 and shut it down.

But Orange County's Groundwater Replenishment System, the largest of its kind in the world, is getting nothing but kudos. Running at full capacity, it will provide enough water to satisfy 140,000 families each year, at a lower cost than relying on imported water from Northern California. It also will reduce the amount of sewage the county dumps into the Pacific Ocean, making beaches cleaner and safer.

On Monday, San Diego's City Council voted to study a water-reuse project of its own, overriding a veto from Mayor Jerry Sanders. And the Los Angeles Department of Water and Power is once again considering plans to recycle wastewater.

As the discussions proceed, Angelenos should resist false notions about fecal matter spewing from kitchen faucets and accept the basic truth about, well, fecal matter spewing from kitchen faucets. Water molecules are water molecules are water molecules. The same limited number of them have been recycled continuously for billions of years. Treated sewage already flows into the Colorado River, the San Joaquin River and the Sacramento River -- all upstream sources of L.A.'s water. And that water, once cleaned, is perfectly safe.

With supplies from the Colorado River and the Sacramento-San Joaquin Delta increasingly unpredictable, regions need to do what they can to tap into local water resources. Wastewater reuse is a relatively cost-effective and environmentally friendly way to make that happen. Cheers to Orange County for outgrowing its potty-humor phase. It's time for Los Angeles to do the same. #

http://www.latimes.com/news/opinion/editorials/la-ed-wastewater5dec05,0,4253334.story?coll=la-news-comment-editorials

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