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Name: i06_Bathy_DeltaRD_1989_HollandTract_KingIsland_MinerSlough_SanJoaquinRiver

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Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Bathymetric survey around Holland Tract (Holland Cut, Roosevelt Cut, and Sand Mound Slough), King Island (White Slough), parts of Disappointment and Little Potato Slough, a section of the San Joaquin River south of Twitchell Island, and Miner Slough. The survey took place in 1989 using single beam echo sounder technology and was performed by Delta RD Engineers. The bathymetry points were compiled from surveys taken by Murray, Burns and Kienlen (MBK) and scanned into PDF format. These surveys are represented as cross-sections and soundings at certain stations and have approximate elevations along the levee every 5 feet (1.524 meters). These elevations were estimated using the scanned PDFs of the cross-sections and sounding graphs. The points and elevations were entered into an excel spreadsheet and compared with the original scanned PDF graphs. These elevations were then entered into GIS. This was done by creating centerlines 90 degrees off the given stations on the levees and then dividing the lines with points 1.524 meters apart. The estimated elevations from the excel spreadsheet were inputted into the bathymetry points attributes table. This process was repeated for every scanned PDF station from the MBK reports. The original field survey data were collected in NAD83 and NGVD29 datums. </SPAN></P><P><SPAN>• Horizontal Units: Feet</SPAN></P><P><SPAN>• Vertical Units: Feet</SPAN></P><P><SPAN /></P></DIV></DIV></DIV>

Copyright Text: Delta RD Engineers California DWR

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