<?xml version="1.0" encoding="utf-8"?>
<drm:descriptiveReportMemo xmlns:drm="http://svn.pydro.noaa.gov/2022/01/DR_Memo" xmlns:hsd="http://svn.pydro.noaa.gov/2022/01/AllGlobalTypes" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://svn.pydro.noaa.gov/2022/01/DR_Memo http://svn.pydro.noaa.gov/2022/01/DRMemo.xsd">
    <drm:metadataTable>
        <hsd:projectType>Habitat Mapping</hsd:projectType>
        <hsd:year>2018</hsd:year>
        <hsd:registryNumber>W00608</hsd:registryNumber>
        <hsd:stateOrTerritory>Florida</hsd:stateOrTerritory>
        <hsd:generalLocality>Offshore Cedar Key</hsd:generalLocality>
        <hsd:sublocality>5NM South of Cedar Key</hsd:sublocality>
        <hsd:scale>40000</hsd:scale>
        <hsd:datesOfSurvey>
            <hsd:start>2018-11-27</hsd:start>
            <hsd:end>2018-12-13</hsd:end>
        </hsd:datesOfSurvey>
        <hsd:PIDate xsi:nil="true" />
        <hsd:projectNumber>ESD-PHB-22</hsd:projectNumber>
        <hsd:fieldUnit>US Geological Survey</hsd:fieldUnit>
        <hsd:chiefOfParty>Nancy DeWitt</hsd:chiefOfParty>
        <hsd:equipmentTypes>
            <hsd:soundingEquipment>
                <hsd:type>MBES</hsd:type>
                <hsd:manufacturer>Teledyne RESON</hsd:manufacturer>
                <hsd:model>SeaBat T50-P</hsd:model>
            </hsd:soundingEquipment>
        </hsd:equipmentTypes>
        <hsd:verifier>Pacific Hydrographic Branch</hsd:verifier>
        <hsd:acquisitionUnits>meters</hsd:acquisitionUnits>
        <hsd:titlesheetRemarks>
            <hsd:fieldRemarks xsi:nil="true" />
            <hsd:branchRemarks>Any revisions to the Descriptive Report (DR) applied during office processing are shown in red italic text. The DR is maintained as a field unit product, therefore all information and recommendations within this report are considered preliminary unless otherwise noted. The final disposition of survey data is represented in the NOAA nautical chart products. All pertinent records for this survey are archived at the National Centers for Environmental Information (NCEI) and can be retrieved via https://www.ncei.noaa.gov/. 

Products created during office processing were generated in NAD83 UTM 17N, MLLW. All references to other horizontal or vertical datums in this report are applicable to the processed hydrographic data provided by the field unit.</hsd:branchRemarks>
        </hsd:titlesheetRemarks>
        <hsd:horizontalDatum>North American Datum 1983</hsd:horizontalDatum>
        <hsd:verticalDatum>Mean Lower Low Water</hsd:verticalDatum>
        <hsd:verticalDatumCorrection>
            <hsd:methodsUsed>VDatum</hsd:methodsUsed>
        </hsd:verticalDatumCorrection>
        <hsd:projection>Projected UTM 17</hsd:projection>
        <hsd:submission>2022-04-08</hsd:submission>
        <hsd:dataLicense>
            <hsd:classification>CC BY (External Source Data)</hsd:classification>
            <hsd:spdx>
                <hsd:licenseIdentifier>CC-BY-4.0</hsd:licenseIdentifier>
                <hsd:licenseDeed>https://creativecommons.org/licenses/by/4.0/</hsd:licenseDeed>
                <hsd:legalCode>https://creativecommons.org/licenses/by/4.0/legalcode</hsd:legalCode>
            </hsd:spdx>
            <hsd:description>This data is licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0). Attribution is included in this report.</hsd:description>
        </hsd:dataLicense>
    </drm:metadataTable>
    <drm:memoTitle>
        <drm:date>2022-10-05</drm:date>
        <drm:verifier>Pacific Hydrographic Branch</drm:verifier>
        <drm:hydrographer>
            <drm:name>Nancy DeWitt</drm:name>
            <drm:jobTitle>Chief of Party</drm:jobTitle>
            <drm:organization>US Geological Survey</drm:organization>
        </drm:hydrographer>
        <drm:processingBranch>PHB</drm:processingBranch>
    </drm:memoTitle>
    <drm:memoBody>
        <drm:memoPurpose>From the Summary of the Data Release (https://doi.org/10.5066/P9ZIZFSM):

The U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center (SPCMSC) conducted a multibeam bathymetry survey of a selected area offshore Cedar Key, Florida (FL) for the Florida Big Bend Pilot Study funded by USGS and the National Oceanic Atmospheric Administration (NOAA). The study involves federal, state, and local agencies who are taking a comprehensive approach to investigate the interconnections between the subsurface geology and the ecological processes that support the diverse coastal habitat. This research will help improve design planning and execution for effective restoration efforts.</drm:memoPurpose>
        <drm:products productSubmitted="true">
            <drm:discussion>A 1-meter MBES grid was provided to the Pacific Hydrographic Branch via the External Source Data Team.</drm:discussion>
        </drm:products>
        <drm:verticalHorizontalControl xsi:nil="true" />
        <drm:dataAcquisitionAndProcessing>The original xyz file was shifted from WGS84 UTM 17N and WGS84 height to NAD83 UTM 17N and MLLW using VDatum. The shifted xyz file was then imported into CARIS Base Editor as a point cloud which was then imported as a 1 meter grid.</drm:dataAcquisitionAndProcessing>
        <drm:dtons reportSubmitted="false">
            <drm:discussion>All data were reviewed for DTONs and none were identified in this survey.</drm:discussion>
        </drm:dtons>
        <drm:externalSourceData productSubmitted="true">
            <drm:discussion>U.S. Geological Survey</drm:discussion>
            <drm:dataLocation>https://doi.org/10.5066/P9ZIZFSM</drm:dataLocation>
        </drm:externalSourceData>
        <drm:resultsAndRecommendations>
            <hsd:discussion xsi:nil="true" />
            <hsd:comments />
        </drm:resultsAndRecommendations>
        <drm:approval>
            <drm:adequacy>This survey does meet charting specifications and is adequate to supersede prior data.</drm:adequacy>
        </drm:approval>
        <drm:comments />
    </drm:memoBody>
</drm:descriptiveReportMemo>