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State Chapters => California => Topic started by: endicom on February 14, 2017, 11:08:51 pm

Title: Oroville dam: Residents allowed to return as water level drops
Post by: endicom on February 14, 2017, 11:08:51 pm
Reuters
CNN WIRE
Feb. 14, 2017

OROVILLE, Calif. — With the water level at California’s Lake Oroville dropping, authorities lifted mandatory evacuations, allowing tens of thousands of residents to return to homes near the reservoir’s dam.

But Butte County Sheriff Kory Honea on Tuesday cautioned residents and business owners to “maintain situational awareness” with a series of storms forecast for later in the week.

“People who have special needs or require extended time to evacuate should consider remaining evacuated,” the sheriff said.

More... http://myfox8.com/2017/02/14/oroville-dam-residents-allowed-to-return-as-water-level-drops/
Title: Re: Oroville dam: Residents allowed to return as water level drops
Post by: skeeter on February 14, 2017, 11:13:11 pm
Series of storms heading inland starting tomorrow.
Title: Re: Oroville dam: Residents allowed to return as water level drops
Post by: endicom on February 14, 2017, 11:15:23 pm
Series of storms heading inland starting tomorrow.


They're saying the new storms shouldn't be as bad as the old storms. We'll see.
Title: Re: Oroville dam: Residents allowed to return as water level drops
Post by: truth_seeker on February 14, 2017, 11:34:46 pm

They're saying the new storms shouldn't be as bad as the old storms. We'll see.

Pretty foolish risk, considering the consequences of being wrong.

Dec, 8th the reservoir was 40% full, and yesterday it was 100% full. By the time the next rain arrives, it may be down to 95% by draining it.

Not to mention the continuing risk of the spillway failing.
Title: Re: Oroville dam: Residents allowed to return as water level drops
Post by: ABX on February 14, 2017, 11:39:04 pm
In addition to rain, what is the impact of the Sierra Nevada snow pack spring melt going to have on it?
Title: Re: Oroville dam: Residents allowed to return as water level drops
Post by: truth_seeker on February 15, 2017, 12:05:54 am
In addition to rain, what is the impact of the Sierra Nevada snow pack spring melt going to have on it?

Good question. The main issue in terms of danger is the spillway failure from the reservoir which was put into use when the level reached 100% full.

Title: Re: Oroville dam: Residents allowed to return as water level drops
Post by: truth_seeker on February 15, 2017, 10:35:28 pm
Lake Oroville has dropped 25 feet since evacuations

Water releases continue to drop water levels nearly 1 foot per hour

Updated: 1:46 PM PST Feb 15, 2017

snip

http://www.kcra.com/article/lake-oroville-has-dropped-25-feet-since-evacuations/8878767
Title: Re: Oroville dam: Residents allowed to return as water level drops
Post by: skeeter on February 15, 2017, 10:42:10 pm
In addition to rain, what is the impact of the Sierra Nevada snow pack spring melt going to have on it?

Dunno, but the CA Dept of Water Resources had better pray for a cool spring.