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The California Department of Water Resources (DWR), North Central Region Office (NCRO), Bathymetry Data Collection Section, conducted a bathymetric survey of Middle River from the head at Old River north to Undine Road as part of the Delta Wide Bathymetry Program. The main purpose of the data is to help complete bathymetric datasets of the South Delta and to allow for relevant comparisons.<\/SPAN><\/P>

\u2022 Survey Dates: February 12, 2024<\/SPAN><\/P>

\u2022 Vessels Used: NCRO R/V Oquawka; NCRO ASV EchoBoat <\/SPAN><\/P>

\u2022 Instrumentation: Multibeam echo sounder with Inertially-Aided Post-Processed Kinematic (IAPPK) GPS procedures. <\/SPAN><\/P>

\u2022 Density: 1 ft grid <\/SPAN><\/P>

\u2022 Horizontal Datum: North American Datum of 1983 (NAD83) California Coordinate System (CCS83) State Plane Zone III , US feet <\/SPAN><\/P>

\u2022 Vertical Datum: North American Vertical Datum of 1988 (NAVD88), US feet <\/SPAN><\/P>

\u2022 Process Date Epoch: 2017.5; Datum Epoch: 2017.5 <\/SPAN><\/P>

\u2022 Related Datasets: Middle River, July 2023 (NCRO Singlebeam); Middle River, March 2022 (Cinquini & Passarino Singlebeam); Middle River, July 2017 (NCRO Multibeam)<\/SPAN><\/P>

\u2022 Involved Staff: Data collected and processed by NCRO Bathymetry sections <\/SPAN><\/P>

\u2022 Survey Responsible Charge: Jacob Wright, PLS (CA 8717) <\/SPAN><\/P>

Please contact the distributor for questions regarding survey control or QC checks. <\/SPAN><\/P>

For complete metadata make sure the viewer (ArcGIS or other software) is set to view FGDC metadata.<\/SPAN><\/P>

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