San Joaquin County, California
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Weather Alerts: San Joaquin County, California
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Flash Flood Watch
Carquinez Strait and Delta-Northern San Joaquin Valley-
300 PM PST Thu Feb 23 2017


The Flash Flood Watch continues for

* A portion of northern California...including the following
areas...and Delta and the levees along the Lower San Joaquin
River in the Northern San Joaquin Valley.

* Through Saturday morning

* Don Pedro and other local dams are making large reservoir
releases that are raising river levels along the Lower San
Joaquin River north of Grayson. These elevated levels are
causing flooding in the low-lying areas along the river and
increasing concerns on the levees in the area.

* As a precaution, San Joaquin County officials and the National
Weather Service are encouraging local residents to be prepared
to take action in the event that levee conditions deteriorate.


A flash flood watch associated with levees means that there is an
issue on the levee that if it were to deteriorate into a failure
it could lead to flash flooding and the rapid arrival of flood
waters into the area normally protected by the levee.


Flood Warning
203 PM PST THU FEB 23 2017

The Flood Warning continues for
The San Joaquin River Near Vernalis.
* At 1:45 PM Thursday the stage was 30.5 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Forecast to fluctuate near 30.5 FT thru Saturday afternoon.
* Flood stage 29.0 ft
* Monitor stage 24.5 ft
* Impact...Near 26.0 feet, Severe seepage occurs outside the levees.
The area covered by seepage will increase as the river stage rises.
* Impact...Near 21.0 feet, Seepage begins into crop area outside of


LAT...LON 3772 12141 3777 12123 3765 12109 3756 12127


Hydrologic Statement
203 PM PST THU FEB 23 2017

Forecast information for
Mokelumne River Near Benson's Ferry Near Thornton.
* At 1:15 PM Thursday the stage was 15.6 feet.
* Forecast to recede to near 14.0 FT tomorrow afternoon.
* Flood stage 17.0 ft
* Monitor stage 12.0 ft


LAT...LON 3829 12154 3829 12134 3820 12128 3820 12150


Hydrologic Statement
203 PM PST THU FEB 23 2017

Forecast information for
San Joaquin River At Mossdale Bridge.
* At 1:45 PM Thursday the stage was 21.6 feet.
* Forecast to fluctuate near 21.5 FT thru Saturday afternoon.
* Flood stage 28.5 ft
* Monitor stage 19.5 ft


LAT...LON 3782 12140 3792 12130 3774 12123 3769 12136


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