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State Awards $275 Million Contract For Oroville Dam Repairs

Kiewit Corp., a construction giant with extensive experience in dam projects, was awarded the massive repair job at troubled Oroville Dam on Monday. The California Department of Water Resources announced that Kiewit, based in Omaha, Neb., beat two competitors for the job with a $275.4 million bid. Kiewit had the low bid, although its offer was still higher than DWR’s internal estimate that the project would cost $231 million. (DWR said on Saturday that it estimated the project would cost $220 million, but released a corrected estimate Monday.)

 

More Rain For The Central Valley

Another storm system will pass through the Central Valley on Tuesday, bringing light, scattered showers. Rain will start developing around midnight on Tuesday and will continue into the afternoon. The bulk of the system will pass through between 7 a.m. and noon, said Scott Borgioli, WeatherAg chief meteorologist. Scattered showers will bring less than a quarter-inch of rain. Tuesday’s high temperatures upper 60s, but a warming trend could push the mercury above 85 this weekend.

Lake Powell to Release Above-Average Amount of Water to Lake Mead

The federal government said Monday it plans to release an above-average amount of water from a major reservoir in the Southwestern U.S. this year, but it’s less than many hoped after a healthy snow season across much of the West. The Bureau of Reclamation, which manages dams and reservoirs on the Colorado River, said it will release 9 million acre-feet from Lake Powell, sending it down the Colorado into Lake Mead, where it will be tapped by Arizona, California and Nevada. An acre-foot can supply two typical homes for a year.

 

Water Transfers: Crucial to Western Rivers, But State Programs Lacking

Water transfers are an important way to share a limited resource, especially to help fish and habitats that were historically left with scraps when water rights were parceled out around the West. The water for such transfers usually comes from farmers, who free up water through some kind of conservation measure. By transferring the saved water, a farmer can help imperiled fish and make some money. Such arrangements are especially important on the Colorado River, which is oversubscribed to serve human demands and also feeds a vast international ecosystem.

Water Again Flowing Through Damaged Oroville Spillway

As construction bids came in to fix the damaged spillway at Oroville Dam, a new round of storms sent water out through the partly collapsed concrete chute over the weekend. State officials expect water to pour through the spillway for up to two weeks, depending on rainfall levels.State officials have reopened the damaged spillway at Oroville Dam as another set of rainstorms began moving across Northern California. Water resumed gushing through the partly collapsed concrete chute Friday morning.

Unofficial Map Shows Potential Flooding From Spillway Failure

According to informal surveys following the February evacuations ordered in response to the Oroville Dam crisis, a large segment of the local population said they stayed at home rather than leave for higher ground. From the looks of an inundation map created by graduate students at the UC Irvine Department of Civil and Environmental Engineering, those residents who stayed behind might have wanted to rethink things. The recent study conducted by the graduate program forecasts the potential destruction that could have followed a complete failure of the emergency spillway at Lake Oroville.

A Dried-Up Calif. Lake Makes A Comeback – And So Do The Species It Sustains

Carrizo Plain National Monument is a place of extremes. The grassland, the largest of its kind in California, stretches across over 250,000 acres of unforgiving wilderness. Caliente Mountain and the Temblor range border the plain, while the San Andreas Fault cuts it down the middle. Surface fractures are visible across the dry landscape. The species that call home to the Carrizo Plain don’t just survive, but thrive in its acute conditions.

Now That The Governor Declared The Drought Is History, What’s A Conservationist To Do?

Seems like California is not the only land mass to benefit from a surplus of water these days. The moon of Saturn, Enceladus, is swimming in warm liquid water, enough to create plumes of hydrogen gas erupting from the subsurface of the ocean floor, NASA and Jet Propulsion Laboratory scientists reported Thursday. In both California and Enceladus, water means life. On Saturn’s moon, the possibility of a food source dissolved in waters is just that, a possibility, as is the outside chance of finding life on the cold, icy moon.

For Some Californians, Effects Of Punishing Drought Not Over

Knee-high tufts of grass dot the streets of Hardwick, a rural neighborhood with a few dozen homes hemmed in by vineyards and walnut and almond orchards in California’s agriculture-rich San Joaquin Valley. Nearby, the Kings River — swollen with rainwater and Sierra Nevada snowmelt — meanders through fields. Water is abundant in the river but it may not last. Despite winter storms that have turned much of California’s parched landscape to vibrant green, the drought has yet to loosen its grip on thousands of residents in the valley. Many people must still use water stored in large tanks in their yard to wash dishes and bathe.

Bids For Oroville Dam Repairs Top State Estimates; $275.4 Million The Lowest

Blowing past state officials’ financial projections, three construction contractors submitted bids for the Oroville Dam repairs that begin at $275 million, the Department of Water Resources said Saturday. DWR, in a brief announcement, said its engineers had estimated the repairs to the two damaged spillways would come in at $220 million. The low bid was $275.4 million from a subsidiary of Kiewit Corp. of Omaha, Neb.; followed by an affiliate of Barnard Construction Co. of Bozeman, Mont., at $277 million. The high bid was made by Oroville Dam Constructors, a joint venture between Sacramento’s Teichert Construction and Granite Construction of Watsonville, at $344.1 million.