Water releases from Pine Flat Dam were ratcheted up Thursday as federal officials worked to prevent the reservoir from overtopping the dam. … Crews from Kings County and the Kings River Conservation District responded to a small breach in a levee on the south fork of the Kings River between Grangville and Highway 198.
The Soquel Creek Water District has not yet settled on a future project to provide its customers with a supplementary water supply source, but it is taking strides toward its investigation of water projects.
The nation’s two largest reservoirs, Lake Mead on the Arizona/Nevada border and Lake Powell on the Arizona/Utah border, were brim full in the year 2000. Four short years later, they had lost enough water to supply California its legally apportioned share of Colorado River water for more than five years. Now, 17 years later, they still have not recovered.
Work at the Oroville Dam will carry on in spite of the 110 degree-plus temperatures anticipated this week. There are protections in place for construction employees with the contractor, Kiewit, and concrete has to undergo a cooling techniques to be able to keep applying it, said Jeff Petersen, the company’s project director in a press conference call Wednesday morning.
The following is a regular update from the California Department of Water Resources (DWR) regarding Lake Oroville Spillways Emergency Recovery Project activities.
• Construction continues at the site by DWR’s prime contractor, Kiewit Infrastructure West.
• Demolition continues on the bottom 600 feet of the upper chute of the main spillway.
• The final 1,000 feet of main spillway leading to the radial gates will be patched and reinforced, and will remain intact this year.
The Federal Energy Regulatory Commission has designated Camp Far West Reservoir a “high and significant hazard dam” that should have a “focused spillway assessment” this year. … The 170-foot-high Camp Far West Dam on the Bear River in Nevada, Yuba and Placer counties holds about 94,000 acre-feet of water.
The Department of Water Resources (DWR) is urging boaters and recreational users to avoid direct contact with or use of waters containing blue-green algae (cyanobacteria) in San Luis Reservoir in Merced County. The recommendation is based on the potential health risks from the algae. Water sampled on June 19 at the Basalt Boat Launch contained approximately 10 micrograms per liter of microcystins, a level that prompts warning signs to be posted at the reservoir.
Riverbend Park is about to get some much-needed TLC. The recreational hot spot along the Feather River has been closed since February after the park was badly battered during the Lake Oroville spillway crisis.
The seemingly contradictory weather conditions — a heat wave and mountains still piled high with snow — are one final legacy of a historic winter that brought the most rain ever recorded in Northern California. Months of back-to-back storms finally pulled California out of its five-year drought. But they left behind up to 200 inches of snow.
The rush of workers and heavy machinery to the shore of Lake Oroville is so vast and unfamiliar it’s fanning rumors across this rural region that the ruckus couldn’t just be for a historic dam repair. … But as state officials gave The Chronicle a tour last week of the construction site, they said the effort was both extensive and relatively straightforward.
A federal forecast of water levels at troubled Lake Mead took a big turn for the worse this week — a 20-foot drop in the lake’s expected January 2019 elevation. The U.S. Bureau of Reclamation’s monthly prediction for Colorado River reservoir levels says the lake could drop to 1,076.53 feet by the end of 2018 or Jan. 1, 2019.
Dams are supposed to collect water from rivers and redistribute it to alleviate water shortages, right? Not so fast. … Almost a quarter of the global population experiences significant decreases in water availability through human interventions on rivers, says Ted Veldkamp at Vrije University in Amsterdam, the Netherlands.
Monitor, patch, watch and then monitor. … Nearly 200,000 evacuees downstream of Oroville Dam witnessed how this failed government approach can impact their lives. My [Assemblyman James Gallagher] review of inspection reports shows a pattern of monitoring, delayed action and patchwork maintenance at Oroville Dam, including painting cracks to track their growth.
In February, damage to the spillway of the dam on Lake Oroville in Butte County, California, and erosion under the dam’s emergency spillway threatened to send billions of gallons of water cascading through dozens of California communities. The dam did not collapse, but the damage to the spillway and the emergency spillway was enormous.
This weekend the water level in Isabella Lake is expected to reach — and maybe even exceed — the restricted pool allowed by the U.S. Army Corps of Engineers. And that means it might be time for residents who reside below the lake’s troubled dam to review their risks.