<?xml version="1.0" encoding="utf-8"?>
<dr:descriptiveReport xmlns:dr="http://svn.pydro.noaa.gov/2022/01/DescriptiveReport" 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/DescriptiveReport http://svn.pydro.noaa.gov/2022/01/DR.xsd">
    <dr:metadata>
        <dr:projectMetadata>
            <hsd:number>OPR-W386-TJ-22</hsd:number>
            <hsd:name>Approaches to Cleveland, OH</hsd:name>
            <hsd:generalLocality>Lake Erie</hsd:generalLocality>
            <hsd:fieldUnit>NOAA Ship Thomas Jefferson (S222)</hsd:fieldUnit>
        </dr:projectMetadata>
        <dr:registryMetadata>
            <hsd:registryNumber>H13607</hsd:registryNumber>
            <hsd:sheetID>1</hsd:sheetID>
            <hsd:registryInstructions xsi:nil="true" />
            <hsd:sublocality>Cleveland Entrance</hsd:sublocality>
            <hsd:stateOrTerritory>Ohio</hsd:stateOrTerritory>
            <hsd:country>United States</hsd:country>
            <hsd:scale>5000</hsd:scale>
        </dr:registryMetadata>
        <dr:surveyMetadata>
            <hsd:year>2022</hsd:year>
            <hsd:chiefOfParty>Matthew J. Jaskoski, CDR/NOAA</hsd:chiefOfParty>
            <hsd:projectType>Navigable Area</hsd:projectType>
            <hsd:PIDate>2022-04-13</hsd:PIDate>
            <hsd:datesOfSurvey>
                <hsd:start>2022-05-02</hsd:start>
                <hsd:end>2022-08-18</hsd:end>
            </hsd:datesOfSurvey>
            <hsd:equipmentTypes>
                <hsd:soundingEquipment>Multibeam Echo Sounder</hsd:soundingEquipment>
                <hsd:imageryEquipment>Multibeam Echo Sounder Backscatter</hsd:imageryEquipment>
            </hsd:equipmentTypes>
            <hsd:acquisition>
                <hsd:units>meters</hsd:units>
            </hsd:acquisition>
            <hsd:timeZone>UTC</hsd:timeZone>
            <hsd:verifier>Atlantic Hydrographic Branch</hsd:verifier>
            <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, IGLD-1985. 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>
        </dr:surveyMetadata>
        <dr:dataLicense>
            <hsd:classification>CC0-1.0 (NOAA Field Units)</hsd:classification>
            <hsd:spdx>
                <hsd:licenseIdentifier>CC0-1.0</hsd:licenseIdentifier>
                <hsd:licenseDeed>https://creativecommons.org/publicdomain/zero/1.0/</hsd:licenseDeed>
                <hsd:legalCode>https://creativecommons.org/publicdomain/zero/1.0/legalcode</hsd:legalCode>
            </hsd:spdx>
            <hsd:description>These data were produced by NOAA and are in the public domain within the United States. NOAA waives any potential copyright and related rights in these data worldwide through the Creative Commons Zero 1.0 Universal Public Domain Dedication (CC0).</hsd:description>
        </dr:dataLicense>
        <dr:assignment>NOAA</dr:assignment>
    </dr:metadata>
    <dr:areaSurveyed>
        <dr:areaDescription>
            <hsd:discussion>Survey H13607, located in southern Lake Erie at the approaches to Cleveland, was conducted in accordance with coverage requirements set forth in the Project Instructions (PIs) OPR-W386-TJ-22.</hsd:discussion>
            <hsd:limits>
                <hsd:northWest>
                    <hsd:latitude hemisphere="N">41.52834722222222</hsd:latitude>
                    <hsd:longitude hemisphere="W">81.7742138888889</hsd:longitude>
                </hsd:northWest>
                <hsd:southEast>
                    <hsd:latitude hemisphere="N">41.52834722222222</hsd:latitude>
                    <hsd:longitude hemisphere="W">81.6778388888889</hsd:longitude>
                </hsd:southEast>
            </hsd:limits>
            <hsd:comments />
        </dr:areaDescription>
        <dr:surveyLimits>
            <hsd:results deviation="true">
                <hsd:discussion>Survey data were acquired in accordance with the requirements set forth by the PIs and the 2022 Hydrographic Surveys Specifications and Deliverables (HSSD) (Figure 1). 

Additionally, within the survey limits set forth in the PIs, a deprioritized S-57 CRANES area was provided. No data was collected in this area due to operational time constraints with the exception of the basin near the Cleveland Harbor USCG station upon their request (Figure 2). Refer to Appendix II for further information.</hsd:discussion>
                <hsd:images>
                    <hsd:caption>Survey layout for H13607, plotted over ENC US4OH01M. Black Outline represents the survey limits set forth by the Project Instructions and MBES coverage in color. </hsd:caption>
                    <hsd:link>SupportFiles\survey limits.png</hsd:link>
                </hsd:images>
                <hsd:images>
                    <hsd:caption>Deprioritized CRANES area (shown in black) and coverage of requested area near the Cleveland Harbor USCG station.</hsd:caption>
                    <hsd:link>SupportFiles\USCG.png</hsd:link>
                </hsd:images>
            </hsd:results>
            <hsd:comments />
        </dr:surveyLimits>
        <dr:surveyPurpose>
            <hsd:topic>
                <hsd:discussion>The Port of Cleveland is one of the largest ports in the Great Lakes and ranks within the top 50 ports in the United States. Roughly 13 million tons of cargo are transported through Cleveland Harbor each year supporting over 20,000 jobs and $3.5 billion in annual economic activity (1) . This project will provide modern bathymetric data for the Cleveland area as well as the vicinity of South Bass Island and Presque Isle. The project area was identified as a statistically significant hot spot within the 2018 Hydrographic Health model, a risk model that Coast Survey uses for evaluating priorities based upon navigational risks and the necessary quality of data to support modern traffic. Most of this area has not been surveyed since the 1940s, and experiences significant vessel traffic. 

A modern bathymetric survey in this area will identify hazards and changes to the seafloor, provide critical data for updating National Ocean Service (NOS) nautical charting products and improve maritime safety. Survey data from this project is intended to supersede all prior survey data in the common area. 

1. https://www.portofcleveland.com/</hsd:discussion>
            </hsd:topic>
            <hsd:comments />
        </dr:surveyPurpose>
        <dr:surveyQuality>
            <hsd:adequacy>The entire survey is adequate to supersede previous data.</hsd:adequacy>
            <hsd:discussion>Data acquired in H13607 meet 100% multibeam echo sounder (MBES) coverage requirements for object detection, as specified in the 2022 HSSD. This includes crosslines (see Section B.2.1), NOAA allowable uncertainty (See Section B.2.2), and density requirements (see Section B.5.2). </hsd:discussion>
            <hsd:comments />
        </dr:surveyQuality>
        <dr:surveyCoverage>
            <hsd:coverageRequirement>
                <hsd:waterDepth>All waters in survey area</hsd:waterDepth>
                <hsd:requiredCoverage>Object Detection (Refer to HSSD Section 5.2.2.2)</hsd:requiredCoverage>
            </hsd:coverageRequirement>
            <hsd:coverageRequirement>
                <hsd:waterDepth>All waters in survey area</hsd:waterDepth>
                <hsd:requiredCoverage>Acquire backscatter data during all multibeam data acquisition (Refer to the HSSD Section 6.2)</hsd:requiredCoverage>
            </hsd:coverageRequirement>
            <hsd:results deviation="true">
                <hsd:discussion>Survey coverage is in accordance with requirements listed in Table 2 and the 2022 HSSD. Coverage requirements were met with 100% object detection MBES coverage (Figure 1). 

Coverage was acquired to the inshore limit of hydrography, the Navigable Area Limit Line (NALL). Areas where survey coverage did not reach the 3.5-meter depth contour, nor the assigned sheet limits, were due to the survey vessel reaching the extent of safe navigation (Figure 3). 

 A total of 13 holidays exist within sheet H13607 (Figure 4). Of the 13 holidays, seven are along the rocky breakwater, three are within the USCG basin coverage, and one holiday is located on the water pump station (Figure 5). The final two holidays are outside of the sheet limits in the south west. These holidays are covered by junctioning sheet H13609 from the same project.</hsd:discussion>
                <hsd:images>
                    <hsd:caption>Areas where coverage did not meet 3.5m depth contour for the assigned sheet limits  was mostly along the breakwater outlined in red.</hsd:caption>
                    <hsd:link>SupportFiles\NALL image.png</hsd:link>
                </hsd:images>
                <hsd:images>
                    <hsd:caption>Location of holidays in sheet H13607. Holidays in the red rectangle are covered by contemporary survey H13609.</hsd:caption>
                    <hsd:link>SupportFiles\holiday locations.png</hsd:link>
                </hsd:images>
                <hsd:images>
                    <hsd:caption>Types of holidays within sheet H13607. </hsd:caption>
                    <hsd:link>SupportFiles\Holiday decsriptions.png</hsd:link>
                </hsd:images>
            </hsd:results>
            <hsd:comments />
        </dr:surveyCoverage>
        <dr:coverageGraphic>
            <hsd:coverageGraphicImage />
        </dr:coverageGraphic>
        <dr:surveyStatistics>
            <hsd:LNM>
                <hsd:vesselLNM>
                    <hsd:vessel>
                        <hsd:hullID>2903</hsd:hullID>
                        <hsd:statistics>
                            <hsd:MS_SBES>0.0</hsd:MS_SBES>
                            <hsd:MS_MBES>180.69</hsd:MS_MBES>
                            <hsd:MS_lidar>0.0</hsd:MS_lidar>
                            <hsd:MS_SSS>0.0</hsd:MS_SSS>
                            <hsd:MS_SBES_MBES>0.0</hsd:MS_SBES_MBES>
                            <hsd:MS_MBES_SSS>0.0</hsd:MS_MBES_SSS>
                            <hsd:MS_SBES_SSS>0.0</hsd:MS_SBES_SSS>
                            <hsd:XL_MBES_SBES>33.54</hsd:XL_MBES_SBES>
                            <hsd:XL_lidar>0.0</hsd:XL_lidar>
                        </hsd:statistics>
                    </hsd:vessel>
                    <hsd:vessel>
                        <hsd:hullID>2904</hsd:hullID>
                        <hsd:statistics>
                            <hsd:MS_SBES>0.0</hsd:MS_SBES>
                            <hsd:MS_MBES>434.06</hsd:MS_MBES>
                            <hsd:MS_lidar>0.0</hsd:MS_lidar>
                            <hsd:MS_SSS>0.0</hsd:MS_SSS>
                            <hsd:MS_SBES_MBES>0.0</hsd:MS_SBES_MBES>
                            <hsd:MS_MBES_SSS>0.0</hsd:MS_MBES_SSS>
                            <hsd:MS_SBES_SSS>0.0</hsd:MS_SBES_SSS>
                            <hsd:XL_MBES_SBES>0.0</hsd:XL_MBES_SBES>
                            <hsd:XL_lidar>0.0</hsd:XL_lidar>
                        </hsd:statistics>
                    </hsd:vessel>
                </hsd:vesselLNM>
                <hsd:totalLNM>
                    <hsd:MS_SBES>0.0</hsd:MS_SBES>
                    <hsd:MS_MBES>648.3</hsd:MS_MBES>
                    <hsd:MS_lidar>0.0</hsd:MS_lidar>
                    <hsd:MS_SSS>0.0</hsd:MS_SSS>
                    <hsd:MS_SBES_MBES>0.0</hsd:MS_SBES_MBES>
                    <hsd:MS_MBES_SSS>0.0</hsd:MS_MBES_SSS>
                    <hsd:MS_SBES_SSS>0.0</hsd:MS_SBES_SSS>
                    <hsd:XL_MBES_SBES>33.54</hsd:XL_MBES_SBES>
                    <hsd:XL_lidar>0.0</hsd:XL_lidar>
                    <hsd:percentXLLNM>5.17</hsd:percentXLLNM>
                </hsd:totalLNM>
            </hsd:LNM>
            <hsd:totalSurveyStats>
                <hsd:bottomSamples>6</hsd:bottomSamples>
                <hsd:maritimeBoundaryPoints>0</hsd:maritimeBoundaryPoints>
                <hsd:DP>0</hsd:DP>
                <hsd:diveOps>0</hsd:diveOps>
                <hsd:SNM>2.86</hsd:SNM>
            </hsd:totalSurveyStats>
            <hsd:surveyDates>2022-05-02</hsd:surveyDates>
            <hsd:surveyDates>2022-05-04</hsd:surveyDates>
            <hsd:surveyDates>2022-05-05</hsd:surveyDates>
            <hsd:surveyDates>2022-05-09</hsd:surveyDates>
            <hsd:surveyDates>2022-06-02</hsd:surveyDates>
            <hsd:surveyDates>2022-06-03</hsd:surveyDates>
            <hsd:surveyDates>2022-06-04</hsd:surveyDates>
            <hsd:surveyDates>2022-06-05</hsd:surveyDates>
            <hsd:surveyDates>2022-06-28</hsd:surveyDates>
            <hsd:surveyDates>2022-06-29</hsd:surveyDates>
            <hsd:surveyDates>2022-06-30</hsd:surveyDates>
            <hsd:surveyDates>2022-07-22</hsd:surveyDates>
            <hsd:surveyDates>2022-08-18</hsd:surveyDates>
            <hsd:discussion xsi:nil="true" />
            <hsd:comments />
        </dr:surveyStatistics>
    </dr:areaSurveyed>
    <dr:dataAcquisitionAndProcessing>
        <dr:equipmentAndVessels>
            <dr:discussion>Refer to the Data Acquisition and Processing Report (DAPR) for a complete description of data acquisition and processing systems, survey vessels, quality control procedures and data processing methods. Additional information to supplement sounding and survey data, and any deviations from the DAPR are discussed in the following sections.</dr:discussion>
            <dr:vessels>
                <dr:vessel>
                    <hsd:hullID>2903</hsd:hullID>
                    <hsd:LOA units="meters">8.5</hsd:LOA>
                    <hsd:draft units="meters">1.2</hsd:draft>
                </dr:vessel>
                <dr:vessel>
                    <hsd:hullID>2904</hsd:hullID>
                    <hsd:LOA units="meters">8.5</hsd:LOA>
                    <hsd:draft units="meters">1.2</hsd:draft>
                </dr:vessel>
                <dr:images>
                    <hsd:caption>Thomas Jefferson Launch 2903</hsd:caption>
                    <hsd:link>SupportFiles\B.1 2903.png</hsd:link>
                </dr:images>
                <dr:images>
                    <hsd:caption>Thomas Jefferson Launch 2904</hsd:caption>
                    <hsd:link>SupportFiles\B.1 2904.png</hsd:link>
                </dr:images>
                <dr:discussion xsi:nil="true" />
                <dr:comments />
            </dr:vessels>
            <dr:equipment>
                <dr:majorSystem>
                    <hsd:type>MBES</hsd:type>
                    <hsd:manufacturer>Kongsberg Maritime</hsd:manufacturer>
                    <hsd:model>EM 2040</hsd:model>
                </dr:majorSystem>
                <dr:majorSystem>
                    <hsd:type>MBES Backscatter</hsd:type>
                    <hsd:manufacturer>Kongsberg Maritime</hsd:manufacturer>
                    <hsd:model>EM 2040</hsd:model>
                </dr:majorSystem>
                <dr:majorSystem>
                    <hsd:type>Conductivity, Temperature, and Depth Sensor</hsd:type>
                    <hsd:manufacturer>Sea-Bird Scientific</hsd:manufacturer>
                    <hsd:model>SBE 19plus V2</hsd:model>
                </dr:majorSystem>
                <dr:majorSystem>
                    <hsd:type>Sound Speed System</hsd:type>
                    <hsd:manufacturer>Teledyne RESON</hsd:manufacturer>
                    <hsd:model>SVP 70</hsd:model>
                </dr:majorSystem>
                <dr:majorSystem>
                    <hsd:type>Positioning and Attitude System</hsd:type>
                    <hsd:manufacturer>Applanix</hsd:manufacturer>
                    <hsd:model>POS MV 320 v5</hsd:model>
                </dr:majorSystem>
                <dr:discussion>Vessel configurations, equipment operations, data acquisition, and processing are consistent with specifications described in the DAPR.</dr:discussion>
                <dr:comments />
            </dr:equipment>
            <dr:comments />
        </dr:equipmentAndVessels>
        <dr:qualityControl>
            <dr:crosslines>
                <hsd:topic>
                    <hsd:discussion>Hydrographic Survey Launch (HSL) 2903 collected 33.54 linear nautical miles of MBES crosslines or 5.17% of mainscheme MBES data. The crosslines acquired represent good spatial and depth diversity for this survey area (Figure 8). A Single Resolution (SR) 50cm Combined Uncertainty and Bathymetry Estimator (CUBE) surface of mainscheme data and a SR 50cm CUBE surface of crossline data were differenced - the resulting mean was 0.01m with a standard deviation of 0.04m (Figure 9). Though the fractional allowable error has a large range, more than 99.5% of nodes are within the allowable error fraction (Figure 10). Visual inspection of the difference surface indicated no systematic issues.</hsd:discussion>
                    <hsd:images>
                        <hsd:caption>H13607 crossline fractional allowable error shown in color, overlaid onto survey data shown in greyscale.</hsd:caption>
                        <hsd:link>SupportFiles\XL fracallerr _ fixed.png</hsd:link>
                    </hsd:images>
                    <hsd:images>
                        <hsd:caption>H13607 crossline/mainscheme comparison statistics.</hsd:caption>
                        <hsd:link>SupportFiles\H13607_MBES_XL_50cm_LWD-H13607_MBES_MS_50cm_LWD_depth_delta.png</hsd:link>
                    </hsd:images>
                    <hsd:images>
                        <hsd:caption>H13607 crossline fraction of allowable error statistics.</hsd:caption>
                        <hsd:link>SupportFiles\H13607_MBES_XL_50cm_LWD-H13607_MBES_MS_50cm_LWD_fracAllowErr_Freq.png</hsd:link>
                    </hsd:images>
                </hsd:topic>
                <hsd:comments />
            </dr:crosslines>
            <dr:uncertainty>
                <hsd:values>
                    <hsd:tideUncertainty>
                        <hsd:tideMethod>ERS via VDATUM</hsd:tideMethod>
                        <hsd:measured units="meters">0.0</hsd:measured>
                        <hsd:zoning units="meters">0.045</hsd:zoning>
                    </hsd:tideUncertainty>
                    <hsd:soundSpeedUncertainty>
                        <hsd:hullID>2903</hsd:hullID>
                        <hsd:measuredCTD units="meters/second">4</hsd:measuredCTD>
                        <hsd:measuredMVP xsi:nil="true" units="meters/second" />
                        <hsd:measuredXBT xsi:nil="true" units="meters/second" />
                        <hsd:surface units="meters/second">0.2</hsd:surface>
                    </hsd:soundSpeedUncertainty>
                    <hsd:soundSpeedUncertainty>
                        <hsd:hullID>2904</hsd:hullID>
                        <hsd:measuredCTD units="meters/second">4</hsd:measuredCTD>
                        <hsd:measuredMVP xsi:nil="true" units="meters/second" />
                        <hsd:measuredXBT xsi:nil="true" units="meters/second" />
                        <hsd:surface units="meters/second">0.2</hsd:surface>
                    </hsd:soundSpeedUncertainty>
                </hsd:values>
                <hsd:discussion>The bathymetric surface's uncertainty layer is compliant with 2022 HSSD uncertainty standards. Over 99.5% of all nodes pass uncertainty standards (Figure 11).</hsd:discussion>
                <hsd:images>
                    <hsd:caption>H13607 uncertainty standards.</hsd:caption>
                    <hsd:link>SupportFiles\H13607_MBES_50cm_LWD_Final.QAv6.tvu_qc.png</hsd:link>
                </hsd:images>
                <hsd:comments />
            </dr:uncertainty>
            <dr:junctions>
                <hsd:discussion>Survey H13607 junctions with contemporary surveys H13608, H13615, and H13609 within the OPR-W386-TJ-22 project. H13609 junction comparison is below. Reference H13608 and H13615's Descriptive Reports for further information on junction comparisons.</hsd:discussion>
                <hsd:junction>
                    <hsd:survey>
                        <hsd:registryNumber>H13609</hsd:registryNumber>
                        <hsd:scale>5000</hsd:scale>
                        <hsd:year>2022</hsd:year>
                        <hsd:fieldUnit>Thomas Jefferson</hsd:fieldUnit>
                        <hsd:relativeLocation>W</hsd:relativeLocation>
                    </hsd:survey>
                    <hsd:discussion>The western edge of sheet H13607 junctions with sheet H13609. A 50m SR CUBE surface of H13607 data and a 50cm SR CUBE surface of H13609 data were differenced (Figure 12). The mean difference between bathymetric surface nodes was 0.01m with s standard deviation of 0.04m (Figure 13). Statistics and visual inspection indicate that surveys H13607 and H13609 are in general agreement.</hsd:discussion>
                    <hsd:images>
                        <hsd:caption>Fraction of allowable error surface difference comparison in color between H13607 and H13609.</hsd:caption>
                        <hsd:link>SupportFiles\Junction Comparison Overview.png</hsd:link>
                    </hsd:images>
                    <hsd:images>
                        <hsd:caption>H13607 and H13609 surface difference comparison statistics.</hsd:caption>
                        <hsd:link>SupportFiles\H13607_MBES_50cm_LWD-H13609_MBES_50cm_LWD_depth_delta.png</hsd:link>
                    </hsd:images>
                    <hsd:comments />
                </hsd:junction>
                <hsd:comments />
            </dr:junctions>
            <dr:sonarQCChecks>
                <hsd:results deviation="true">
                    <hsd:discussion>Sonar system quality control checks were conducted as detailed in the quality control section of the DAPR.</hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:sonarQCChecks>
            <dr:equipmentEffectiveness>
                <hsd:results deviation="false">
                    <hsd:issue>
                        <hsd:title>None Exist</hsd:title>
                        <hsd:discussion>There were no conditions or deficiencies that affected equipment operational effectiveness.</hsd:discussion>
                        <hsd:comments />
                    </hsd:issue>
                </hsd:results>
                <hsd:comments />
            </dr:equipmentEffectiveness>
            <dr:factorsAffectingSoundings>
                <hsd:results deviation="false">
                    <hsd:issue>
                        <hsd:title>None Exist</hsd:title>
                        <hsd:discussion>There were no other factors that affected corrections to soundings.</hsd:discussion>
                        <hsd:comments />
                    </hsd:issue>
                </hsd:results>
                <hsd:comments />
            </dr:factorsAffectingSoundings>
            <dr:soundSpeedMethods>
                <dr:castFrequency>Static casts were conducted at the start of acquisition each day and at a minimum of one every four hours during launch acquisition. Static cast frequency was increased in areas where a change in surface sound speed greater than two meters per second existed. All sound speed methods were used as detailed in the DAPR. </dr:castFrequency>
                <dr:discussion>A total of 48 sound speed profiles were collected within the survey limits of H13607 and display good spatial diversity. Fifteen of these casts were located outside of the sheet limits, not more than 365m away, and display profiles representative of the area (Figure 14). All sound speed profile data were concatenated into a master file for the sheet. MBES data were corrected by applying profiles nearest in distance in time (4 hours) using this master file. </dr:discussion>
                <dr:images>
                    <hsd:caption>Overview of all SVP casts, shown as red targets, taken on H13607.</hsd:caption>
                    <hsd:link>SupportFiles\SVP locations.png</hsd:link>
                </dr:images>
                <dr:comments />
            </dr:soundSpeedMethods>
            <dr:coverageEquipmentAndMethods>
                <hsd:results deviation="true">
                    <hsd:discussion>All equipment and survey methods were used as detailed in the DAPR.</hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:coverageEquipmentAndMethods>
            <dr:additionalQualityControl>
                <hsd:comments />
            </dr:additionalQualityControl>
        </dr:qualityControl>
        <dr:echoSoundingCorrections>
            <dr:corrections>
                <hsd:results deviation="false">
                    <hsd:discussion>All data reduction procedures conform to those detailed in the DAPR.</hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:corrections>
            <dr:calibrations>
                <hsd:results deviation="false">
                    <hsd:discussion>All sounding systems were calibrated as detailed in the DAPR.</hsd:discussion>
                    <hsd:calibration xsi:nil="true" />
                </hsd:results>
                <hsd:comments />
            </dr:calibrations>
            <dr:additionalIssues>
                <hsd:comments />
            </dr:additionalIssues>
        </dr:echoSoundingCorrections>
        <dr:backscatter>
            <hsd:results acquired="true">
                <hsd:discussion>All equipment and survey methods were used as detailed in the DAPR. Raw MBES backscatter was flagged as part of the .all file from the Kongsberg EM2040 systems. Backscatter was processed in the QPS Fledermaus GeoCoder Toolbox (FMGT) software, and the exported geotiffs are included in the final processed data submission package (Figures 15, 16 and 17). </hsd:discussion>
                <hsd:images>
                    <hsd:caption>300kHz backscatter mosaic from data acquired by 2903.</hsd:caption>
                    <hsd:link>SupportFiles\2903 backscatter.png</hsd:link>
                </hsd:images>
                <hsd:images>
                    <hsd:caption>400kHz backscatter mosaic from data acquired by 2903.</hsd:caption>
                    <hsd:link>SupportFiles\2903_400kHZ backscatter.png</hsd:link>
                </hsd:images>
                <hsd:images>
                    <hsd:caption>300kHz backscatter mosaic from data acquired by 2904.</hsd:caption>
                    <hsd:link>SupportFiles\2904 backscatter.png</hsd:link>
                </hsd:images>
            </hsd:results>
            <hsd:comments />
        </dr:backscatter>
        <dr:dataProcessing>
            <dr:drSoftware>
                <dr:featureObjectCatalog>NOAA Profile Version 2022</dr:featureObjectCatalog>
                <dr:discussion xsi:nil="true" />
                <dr:comments />
            </dr:drSoftware>
            <dr:surfaces>
                <dr:surface>
                    <hsd:surfaceName>H13607_MBES_50cm_LWD_Final</hsd:surfaceName>
                    <hsd:surfaceType>CARIS Raster Surface (CUBE)</hsd:surfaceType>
                    <hsd:resolution units="centimeters">50</hsd:resolution>
                    <hsd:depthRange>
                        <hsd:min units="meters">1.04</hsd:min>
                        <hsd:max units="meters">16.25</hsd:max>
                    </hsd:depthRange>
                    <hsd:surfaceParameter>NOAA_0.5m</hsd:surfaceParameter>
                    <hsd:purpose>Object Detection</hsd:purpose>
                </dr:surface>
                <dr:surface>
                    <hsd:surfaceName>H13607_MBES_50cm_LWD</hsd:surfaceName>
                    <hsd:surfaceType>CARIS Raster Surface (CUBE)</hsd:surfaceType>
                    <hsd:resolution units="centimeters">50</hsd:resolution>
                    <hsd:depthRange>
                        <hsd:min units="meters">1.04</hsd:min>
                        <hsd:max units="meters">16.25</hsd:max>
                    </hsd:depthRange>
                    <hsd:surfaceParameter>NOAA_0.5m</hsd:surfaceParameter>
                    <hsd:purpose>Object Detection</hsd:purpose>
                </dr:surface>
                <dr:surface>
                    <hsd:surfaceName>H13607_MBAB_2m_300kHz_1of3</hsd:surfaceName>
                    <hsd:surfaceType>MB Backscatter Mosaic</hsd:surfaceType>
                    <hsd:resolution units="meters">2</hsd:resolution>
                    <hsd:depthRange>
                        <hsd:min xsi:nil="true" />
                        <hsd:max xsi:nil="true" />
                    </hsd:depthRange>
                    <hsd:surfaceParameter>N/A</hsd:surfaceParameter>
                    <hsd:purpose>Object Detection</hsd:purpose>
                </dr:surface>
                <dr:surface>
                    <hsd:surfaceName>H13607_MBAB_2m_400kHz_2of3</hsd:surfaceName>
                    <hsd:surfaceType>MB Backscatter Mosaic</hsd:surfaceType>
                    <hsd:resolution units="meters">2</hsd:resolution>
                    <hsd:depthRange>
                        <hsd:min xsi:nil="true" />
                        <hsd:max xsi:nil="true" />
                    </hsd:depthRange>
                    <hsd:surfaceParameter>N/A</hsd:surfaceParameter>
                    <hsd:purpose>Object Detection</hsd:purpose>
                </dr:surface>
                <dr:surface>
                    <hsd:surfaceName>H13607_MBAB_2m_300kHz_3of3</hsd:surfaceName>
                    <hsd:surfaceType>MB Backscatter Mosaic</hsd:surfaceType>
                    <hsd:resolution units="meters">2</hsd:resolution>
                    <hsd:depthRange>
                        <hsd:min xsi:nil="true" />
                        <hsd:max xsi:nil="true" />
                    </hsd:depthRange>
                    <hsd:surfaceParameter>N/A</hsd:surfaceParameter>
                    <hsd:purpose>Object Detection</hsd:purpose>
                </dr:surface>
                <dr:discussion>Object detection requirements were met with 100% object detection MBES coverage as specified under section 5.2.2.2 of the 2022 HSSD. All bathymetric grids for H13607 meet density requirements per the 2022 HSSD (Figure 18). 

A total of 13 holidays exist within survey H13607. See section A.4 for further information.

Additionally, after multiple rounds of surface cleaning, a total of 1335 fliers remain as detected by NOAA's QC Tool Flier Finder available in the Pydro XL-19 suite. Of the 1335 filers: 1319 are along the rocky breakwater, three are long the walls of the USCG basin, seven are on cribs, and the final six are nodes on features that accurately represent the lake floor (Figures 19 and 20). After careful review of the flagged grid nodes, the hydrographer considers them to be accurate representations of the lake bed, and has retained them in the final delivered surfaces. </dr:discussion>
                <dr:images>
                    <hsd:caption>H13607 data density.</hsd:caption>
                    <hsd:link>SupportFiles\H13607_MBES_50cm_LWD_Final.QAv6.density.png</hsd:link>
                </dr:images>
                <dr:images>
                    <hsd:caption>General location of all 1335 remaining fliers on H13607.</hsd:caption>
                    <hsd:link>SupportFiles\flier locations.png</hsd:link>
                </dr:images>
                <dr:images>
                    <hsd:caption>A detailed view of fliers along the breakwater.</hsd:caption>
                    <hsd:link>SupportFiles\breakwater fliers.png</hsd:link>
                </dr:images>
                <dr:comments />
            </dr:surfaces>
            <dr:additionalDataProcessing>
                <hsd:comments />
            </dr:additionalDataProcessing>
        </dr:dataProcessing>
    </dr:dataAcquisitionAndProcessing>
    <dr:verticalAndHorizontalControl>
        <dr:discussion>Field installed tide and GPS stations were not utilized for this survey. There is no HVCR report included with the submission of H13607.</dr:discussion>
        <dr:verticalControl>
            <hsd:verticalDatum>Low Water Datum IGLD-1985</hsd:verticalDatum>
            <hsd:tideStations />
            <hsd:standard_or_ERZT xsi:nil="true" used="false" />
            <hsd:VDATUM_or_constantSep used="true">
                <hsd:methodsUsed>ERS via VDATUM</hsd:methodsUsed>
                <hsd:ellipsoidToChartDatumSepFile>
                    <hsd:fileName>OPR-W386-TJ-22_NAD83_2011_VDatum_LWD_IGLD85</hsd:fileName>
                </hsd:ellipsoidToChartDatumSepFile>
                <hsd:discussion xsi:nil="true" />
                <hsd:comments />
            </hsd:VDATUM_or_constantSep>
            <hsd:comments />
        </dr:verticalControl>
        <dr:horizontalControl>
            <hsd:horizontalDatum>North American Datum 1983</hsd:horizontalDatum>
            <hsd:projection>Projected UTM 17</hsd:projection>
            <hsd:PPK used="true">
                <hsd:methodsUsed>RTX</hsd:methodsUsed>
                <hsd:baseStations />
                <hsd:discussion>Trimble PP-RTX service was used with an Applanix POS MV v5 system and POSPac MMS software for ERS control in accordance with the HSSD for H13607 MBES data from vessels 2903 and 2904.</hsd:discussion>
                <hsd:comments />
            </hsd:PPK>
            <hsd:PPP xsi:nil="true" used="false" />
            <hsd:RTK xsi:nil="true" used="false" />
            <hsd:DGPS xsi:nil="true" used="false" />
            <hsd:WAAS used="true">
                <hsd:discussion>The Wide Area Augmentation System (WAAS) was used for real-time horizontal control during data acquisition.</hsd:discussion>
                <hsd:comments />
            </hsd:WAAS>
            <hsd:comments />
        </dr:horizontalControl>
        <dr:additionalIssues>
            <hsd:comments />
        </dr:additionalIssues>
    </dr:verticalAndHorizontalControl>
    <dr:resultsAndRecommendations>
        <dr:chartComparison>
            <dr:methods>
                <hsd:comments />
            </dr:methods>
            <dr:charts>
                <hsd:ENC>
                    <hsd:name>US4OH01M</hsd:name>
                    <hsd:scale>80000</hsd:scale>
                    <hsd:edition>16</hsd:edition>
                    <hsd:updateApplicationDate>2018-04-27</hsd:updateApplicationDate>
                    <hsd:issueDate>2022-07-13</hsd:issueDate>
                </hsd:ENC>
                <hsd:ENC>
                    <hsd:name>US5OH11M</hsd:name>
                    <hsd:scale>10000</hsd:scale>
                    <hsd:edition>22</hsd:edition>
                    <hsd:updateApplicationDate>2022-04-14</hsd:updateApplicationDate>
                    <hsd:issueDate>2022-04-14</hsd:issueDate>
                </hsd:ENC>
                <hsd:comments />
            </dr:charts>
            <dr:shoalAndHazardousFeatures>
                <hsd:results investigated="None Exist">
                    <hsd:discussion>No shoals or potentially hazardous features exist for this survey.</hsd:discussion>
                </hsd:results>
                <hsd:comments>
                    <hsd:branchComment>
                        <hsd:comment>One Danger to Navigation was submitted during the survey review at the Branch.</hsd:comment>
                        <hsd:images>
                            <hsd:caption>H13607 12.3m obstruction DTON</hsd:caption>
                            <hsd:link>file:///Q:/OPR-W386-TJ-22/Surveys/H13607/01_HDR/Images/HDR_Images/H13607_DTON_1.png</hsd:link>
                        </hsd:images>
                    </hsd:branchComment>
                </hsd:comments>
            </dr:shoalAndHazardousFeatures>
            <dr:chartedFeatures>
                <hsd:results investigated="Investigated">
                    <hsd:discussion>A total of 49 features were assigned for investigation. Based on the H13607 data, 22 were deemed appropriate for deletion, 18 were deemed appropriate to be retained as charted, and no features were deemed appropriate for update. A total of nine features were not addressed due to being located within the deprioritized survey area. Reference the Final Feature File included with the submission of this project for further information.</hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:chartedFeatures>
            <dr:unchartedFeatures>
                <hsd:results investigated="Investigated">
                    <hsd:discussion>A total of 16 uncharted features were identified and investigated using 100% object detection MBES coverage. Zero of these features were considered dangerous to navigation. Reference the Final Feature File included with the submission of this project for further information.</hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:unchartedFeatures>
            <dr:channels>
                <hsd:results investigated="None Exist">
                    <hsd:discussion>No channels exist for this survey.  There are no designated anchorages, precautionary areas, safety fairways, traffic separation schemes, pilot boarding areas, or channel and range lines within the survey limits.</hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:channels>
        </dr:chartComparison>
        <dr:additionalResults>
            <dr:ATONS>
                <hsd:results investigated="Investigated">
                    <hsd:discussion>Twenty-four charted AtoNs exist within the assigned sheet limits. Twenty-two AtoNs were investigated and confirmed to be on station. Two fog signals were not addressed during survey operations. No AtoN reports were filed with the U.S Coast Guard.</hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:ATONS>
            <dr:maritimeBoundary>
                <hsd:results investigated="None Exist">
                    <hsd:discussion>No Maritime Boundary Points were assigned for this survey.</hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:maritimeBoundary>
            <dr:bottomSamples>
                <hsd:results investigated="Investigated">
                    <hsd:discussion>Nine bottom samples were assigned for investigation. However, the hydrographer chose to collect six samples in alternate locations guided by differences observed in the backscatter intensity indicating different bottom substrate types (Figure 21). </hsd:discussion>
                    <hsd:images>
                        <hsd:caption>Overview of locations of bottom samples collected on H13607 shown as blue stars overlaid on MBES backscatter mosaic. </hsd:caption>
                        <hsd:link>SupportFiles\bottom sample locations.png</hsd:link>
                    </hsd:images>
                </hsd:results>
                <hsd:comments />
            </dr:bottomSamples>
            <dr:overheadFeatures>
                <hsd:results investigated="None Exist">
                    <hsd:discussion>No overhead features exist for this survey.</hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:overheadFeatures>
            <dr:submarineFeatures>
                <hsd:results investigated="Investigated">
                    <hsd:discussion>Nine pipelines were assigned and investigated within H13607. Reference the Final Feature File included with the submission of this project for further information.</hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:submarineFeatures>
            <dr:platforms>
                <hsd:results investigated="None Exist">
                    <hsd:discussion>No platforms exist for this survey.</hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:platforms>
            <dr:ferryRoutesAndTerminals>
                <hsd:results investigated="None Exist">
                    <hsd:discussion>No ferry routes or terminals exist for this survey.</hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:ferryRoutesAndTerminals>
            <dr:abnormalSeafloorEnviroCond>
                <hsd:results investigated="None Exist">
                    <hsd:discussion>No abnormal seafloor or environmental conditions exist for this survey.</hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:abnormalSeafloorEnviroCond>
            <dr:constructionOrDredging>
                <hsd:results investigated="None Exist">
                    <hsd:discussion>No present or planned construction or dredging exist within the survey limits.</hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:constructionOrDredging>
            <dr:newSurveyRecommendation>
                <hsd:results recommended="false">
                    <hsd:discussion>No new surveys or further investigations are recommended for this area.</hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:newSurveyRecommendation>
            <dr:ENCScaleRecommendation>
                <hsd:results recommended="false">
                    <hsd:discussion>No new ENC scales are recommended for this area.</hsd:discussion>
                </hsd:results>
                <hsd:comments />
            </dr:ENCScaleRecommendation>
        </dr:additionalResults>
    </dr:resultsAndRecommendations>
    <dr:approvalSheet>
        <dr:statements>
            <dr:supervision>As Chief of Party, field operations for this hydrographic survey were conducted under my direct supervision, with frequent personal checks of progress and adequacy. I have reviewed the attached survey data and reports.</dr:supervision>
            <dr:approval>All field sheets, this Descriptive Report, and all accompanying records and data are approved. All records are forwarded for final review and processing to the Processing Branch.</dr:approval>
            <dr:adequacyOfSurvey>The survey data meets or exceeds requirements as set forth in the NOS Hydrographic Surveys Specifications and Deliverables, Field Procedures Manual, Letter Instructions, and all HSD Technical Directives. These data are adequate to supersede charted data in their common areas. This survey is complete and no additional work is required with the exception of deficiencies noted in the Descriptive Report.</dr:adequacyOfSurvey>
            <dr:additionalInfo xsi:nil="true" />
        </dr:statements>
        <dr:signingPersonnel>
            <hsd:approverName>Matthew J. Jaskoski, CDR/NOAA</hsd:approverName>
            <hsd:approverTitle>Chief of Party</hsd:approverTitle>
            <hsd:approvalDate>2022-09-26</hsd:approvalDate>
        </dr:signingPersonnel>
        <dr:signingPersonnel>
            <hsd:approverName>Michelle M. Levano, LT/NOAA</hsd:approverName>
            <hsd:approverTitle>Field Operations Officer</hsd:approverTitle>
            <hsd:approvalDate>2022-09-26</hsd:approvalDate>
        </dr:signingPersonnel>
        <dr:signingPersonnel>
            <hsd:approverName>Erin K. Cziraki</hsd:approverName>
            <hsd:approverTitle>Chief Survey Technician</hsd:approverTitle>
            <hsd:approvalDate>2022-09-26</hsd:approvalDate>
        </dr:signingPersonnel>
        <dr:signingPersonnel>
            <hsd:approverName>Chloe B. Arboleda</hsd:approverName>
            <hsd:approverTitle>Sheet Manager</hsd:approverTitle>
            <hsd:approvalDate>2022-09-26</hsd:approvalDate>
        </dr:signingPersonnel>
    </dr:approvalSheet>
</dr:descriptiveReport>