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MORPHODYNAMIC CONDITIONS AT THE SONOMA BAYLANDS RESTORATION SITE
Dingler, Cacchione, & Hansen
USGS Menlo Park CA

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Channel Cross-Section
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CHANNEL CROSS-SECTION

Southward view of the channel draining the Main Unit to
San Pablo Bay, taken from atop Weir 2

Picture of Channel

Spanning the channel is a bridge used by the USGS to hold the wet station instruments.


Surveyor atop center weir

during the survey of the cross-section of the adjacent tidal channel

Picture of Surveyor Nearby structure is the part of the weir that holds the stop logs, which control the height of the water in the impoundment.


Channel cross-section at the bridge at three times during the restoration process
Channel Cross-Sections

   The first survey occurred after the levee and weir were built but before filling of the impoundment began; the other two after filling ended. Channel deepening between the second and third surveys may be a result of allowing some water to flow into and out of the impoundment, which increases flow in the channel over pre-filling conditions.

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SFBay MapURL: http://sfbay.wr.usgs.gov/access/Dingler/channel.html
Created: 10/3/97 by Laura Zink Torresan