OPR-W386-TJ-22 Approaches to Cleveland, OH Lake Erie, OH NOAA Ship Thomas Jefferson (S222) H13611 5 2 NM North of Presque Isle Pennsylvania United States 5000 2022 Matthew J. Jaskoski, CDR/NOAA Navigable Area 2022-07-01 2022-07-05 2022-08-15 Multibeam Echo Sounder Multibeam Echo Sounder Backscatter meters UTC Atlantic Hydrographic Branch 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, LWD - 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. CC0-1.0 (NOAA Field Units) CC0-1.0 https://creativecommons.org/publicdomain/zero/1.0/ https://creativecommons.org/publicdomain/zero/1.0/legalcode 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). NOAA Survey H13611, located in Lake Erie within the sub locality of 2 NM North of Presque Isle, PA, was conducted in accordance with coverage requirements set forth in the Project Instructions OPR-W386-TJ-22 (Figures 1 and 2). 42.22430833333333 80.40929444444446 42.09706666666667 80.04556944444444 Location of H13611, outlined in black, within Lake Erie. Other assigned sheet limits for Project OPR-W386-TJ-22 outlined in blue over RNC 14820. SupportFiles\A.4 Survey Location.png Survey layout for H13611, plotted over RNC 14824. The solid black outline represents the survey limits set forth by the Project Instructions. Multibeam coverage shown in color. SupportFiles\A.1 Survey Limits_b.png Survey data were acquired in accordance with the requirements set forth by the Project Instructions (PI) and the 2022 Hydrographic Surveys Specifications and Deliverables (HSSD). The assigned survey area covered approximately 44 square nautical miles. Erie is Pennsylvania's primary port for accessing Lake Erie and the St. Lawrence Seaway. Erie, PA is occasionally used by container ships, tankers, barges, and other large shipping vessels. It also boasts a robust sailing and fishing community, scenic beauty, biodiversity, and historical connections. This area was identified as a statistically significant hotspot within the 2018 Hydrographic Health Model, a risk model that Coast Survey uses for evaluating priorities based upon navigational risk and the necessary quality of data to support modern traffic. The modern bathymetric survey in this area will not only identify hazards and changes to the lake bed, but will update National Ocean Service (NOS) nautical charting products and support Erie County's Lake Erie Quadrangle nomination for National Marine Sanctuary designation. https://www.sail-world.com/Australia/Erie-Pennsylvania-Small-place-big-boating/-127219? https://en.wikipedia.org/wiki/Economy_of_Erie,_Pennsylvania The entire survey is adequate to supersede previous data. Data acquired in H13611 meet multibeam echo sounder (MBES) coverage requirements for complete coverage, as required by the 2022 HSSD. This includes crosslines (see section B.2.1), NOAA allowable uncertainty (see Section B.2.10), and density requirements (see Section B.5.2). All waters in survey area. Complete Coverage (Refer to the HSSD Section 5.2.2.3) All waters in survey area. Acquire backscatter data during all multibeam data acquisition (Refer to the HSSD Section 6.2) Survey coverage is in accordance with requirements listed in section 5.2.2 of the 2022 HSSD. Coverage requirements were met with 100% complete coverage MBES (Figure 3). Two holidays exist in the 100% complete coverage MBES achieved for H13611. Both are located on the southern sheet edge outside of the assigned survey limits. One holiday is completely covered by MBES from junctioning sheet H13610 and no significant features or shoaling were observed in the area (Figure 4). The second holiday does not have coverage from a junctioning survey (Figure 5). While there is no guarantee of the absence of significant features, the hydrographer does not see evidence of hazardous shoaling based on trends in the surrounding bathymetry. MBES coverage achieved for H13611 shown in color overlaid on RNC 14824. The black outline represents the assigned survey limits. SupportFiles\A.4 Survey Coverage.png Holiday outside of sheet limits, located at 42° 09' 31.27"N 080° 09' 23.98"W, with coverage from junctioning sheet H13610 overlaid in transparent blue. SupportFiles\A.4 Holiday 1.png Holiday outside of sheet limits, located at 42° 07' 31.23"N 080° 15' 03.80"W, without coverage from an adjoining sheet. SupportFiles\A.4 Holiday 2.png S-222 0.0 1545.23 0.0 0.0 0.0 0.0 0.0 52.87 0.0 2903 0.0 619.28 0.0 0.0 0.0 0.0 0.0 34.99 0.0 0.0 2164.51 0.0 0.0 0.0 0.0 0.0 87.86 0.0 4.06 9 0 0 0 44.56 2022-07-05 2022-07-06 2022-07-07 2022-07-08 2022-07-09 2022-07-10 2022-07-11 2022-07-12 2022-07-13 2022-07-14 2022-07-15 2022-07-20 2022-07-28 2022-07-26 2022-07-27 2022-07-28 2022-07-29 2022-07-30 2022-08-02 2022-08-09 2022-08-10 2022-08-11 2022-08-12 2022-08-13 2022-08-14 2022-08-15 Data acquisition for survey H13611 occurred over 26 days from July 5, 2022 until August 15, 2022. A total of nine bottom samples were collected on July 30, 2022 and August 12, 2022. 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. S-222 63.3 4.6 2903 8.5 1.2 NOAA ship Thomas Jefferson SupportFiles\B.1 S-222.jpg Hydrographic Survey Launch 2903 SupportFiles\B.1 Launches.jpg Positioning and Attitude System Applanix POS MV 320 v5 MBES Kongsberg Maritime EM 2040 MBES Backscatter Kongsberg Maritime EM 2040 Sound Speed System AML Oceanographic MVP200 Conductivity, Temperature, and Depth Sensor AML Oceanographic MVP-X Sound Speed System Valeport Thru-Hull SVS Sound Speed System Teledyne RESON SVP 70 Conductivity, Temperature, and Depth Sensor Sea-Bird Scientific SBE 19plus V2 Vessel configurations, equipment operations, data acquisition, and processing were consistent with specifications described in the DAPR. S-222 and 2903 collected a total of 87.86 linear nautical miles of MBES crosslines, or 4.06% of mainscheme MBES data. The crosslines acquired represent good spatial and depth diversity for this survey area (Figure 8). A variable resolution Combined Uncertainty and Bathymetry Estimator (CUBE) surface of mainscheme data and a variable resolution CUBE surface of crossline data were differenced - the resulting mean was 0.01m with a standard deviation of 0.06m (Figure 9). Over 99.5% of nodes are compliant with fraction of allowable error standards (Figure 10). Visual inspection of the difference surface indicated no systematic issues. H13611 crossline fraction of allowable error shown in color, overlaid onto survey data shown in greyscale. SupportFiles\B.2 Crosslines.png H13611 crossline and mainscheme comparison statistics. SupportFiles\B.2 XL Stats.png H13611 fraction of allowable error node distribution. SupportFiles\B.2 XL Frac Error.png ERS via VDATUM 0.0 0.045 S-222 4 0.2 2903 4 0.2 The bathymetric surface's uncertainty layer is compliant with 2022 HSSD uncertainty standards. Over 99.5% of all nodes pass uncertainty standards (Figure 11). H13611 uncertainty standards. SupportFiles\B.2.2 Uncertainty.png H13611 junctions with three other contemporary surveys within the OPR-W386-TJ-22 project: H13610, H13670, and H13683 (Figure 12). Overview of the relative locations of contemporary surveys that junction with H13611. SupportFiles\B.2 Junction overview.png H13610 5000 2022 NOAA ship THOMAS JEFFERSON SE Refer to the Descriptive Report for survey H13610 for details regarding the junction analysis. H13670 40000 2022 NOAA ship THOMAS JEFFERSON NW The northwestern edge of H13611 junctions with sheet H13670. A variable resolution (VR) CUBE surface of H13611 data and a VR CUBE surface of H13570 data were differenced (Figure 13). The mean difference between bathymetric surface nodes was 0.01m with a standard deviation of 0.07m (Figure 14). 100% of the compared nodes meet fraction of allowable error standards (Figure 15). Statistics and visual inspection indicate that surveys H13611 and H13670 are in general agreement. Fraction of allowable error surface difference comparison in color between H13611 and H13670. SupportFiles\B.2.3 H13670 FAE Distribution.png H13611 and H13670 surface difference comparison statistics. SupportFiles\B.2.3 H13670 Difference Stats.png H13511 and H13670 fractional allowable error node distribution comparison stats. SupportFiles\B.2.3 H13670 Frac Allowable Error.png H13683 5000 2022 NOAA ship THOMAS JEFFERSON NE The northeastern edge of H13611 junctions with sheet H13683. A variable resolution (VR) CUBE surface of H13611 data and a VR CUBE surface of H13583 data were differenced (Figure 16). The mean difference between bathymetric surface nodes was 0.03m with a standard deviation of 0.06m (Figure 17). 100% of the compared nodes meet fraction of allowable error standards (Figure 18). Statistics and visual inspection indicate that surveys H13611 and H13683 are in general agreement. Fraction of allowable error surface difference comparison in color between H13611 and H13683. SupportFiles\B.2.3 H13683 FAE Distribution.png H13611 and H13683 surface difference comparison statistics. SupportFiles\B.2.3 H13683 Difference Stats.png H13511 and H13683 fraction of allowable error node distribution comparison stats. SupportFiles\B.2.3 H13683 Frac Allowable Error.png Sonar system quality control checks were conducted as detailed in the quality control section of the DAPR. None Exist There were no conditions or deficiencies that affected equipment operational effectiveness. Thermal Stratification Thermal stratification is a persistent environmental condition encountered in the project area and was present for the duration for the survey. This stratification was identified in the MVP and CTD sound speed profiles (Figure 19) and resulted in varying degrees of refraction of the outer MBES swath. However, this refraction did not result in vertical displacement of soundings that was greater than the maximum allowable total vertical uncertainty (TVU) at any depth (Figure 20). The final delivered surfaces meet NOAA allowable vertical uncertainty parameters from the 2022 HSSD (Figure 11). As such, the data remain sufficient to supersede previous data. Sound speed profiles from MVP casts that represent typical conditions in the survey area. SupportFiles\B.2.6 MVP Profiles.png 2D view of survey data showing upturn in the outer swath likely caused by sound speed issues. 2D view exaggeration 15x. SupportFiles\B.2.6 Subset of refraction.png A sound speed profile was acquired at the beginning of each acquisition day and at least once every four hours thereafter. MVP casts on S-222 were collected approximately every hour and targeted to deeper areas of the sheet in order to fully sample the thermocline. CTD casts on 2903 were collected approximately every two to three hours. All sound speed methods were used as detailed in the DAPR. A total of 233 sound speed profiles were collected as part of acquisition of H13611 and display good spatial diversity (Figure 21). Twenty of these profiles were collected outside of the assigned survey limits but not more than 350m away. The casts display profiles representative of the survey area and have been retained for data processing. 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. Overview of H13611 sound speed profile locations plotted over greyscale MBES coverage. Profiles collected by S-222 shown as red targets, profiles collected by 2903 shown as blue targets. SupportFiles\B.2.7 SVP cast distribution.png All equipment and survey methods were used as detailed in the DAPR. On Julian Day 209, HSL 2903's Applanix POS/MV positioning and attitude system experienced IMU data gaps that resulted in the inability to apply Delayed Heave using procedures outlined in the DAPR. The affected survey lines were removed from the project and re-acquired. However, during post-acquistion processing QC review, one line was found to not have Delayed Heave applied (line 0131_20220728_163417_2903_EM2040, Figure 22). Further investigation of POS data revealed an IMU data gap of 292 seconds for a period of time covering the line. This problem was not identified until after the field unit had departed the area, so the line was not able to be re-acquired. Inspection of the data and of the surface revealed no vertical offsets being present with the absence of Delayed Heave. The line was re-processed allowing a time gap of 293 seconds which successfully applied Delayed Heave to the rest of the line. The line has been retained as part of the final delivered surfaces so as not to create a holiday. Location of line 0131_20220728_163417_2903_EM2040 acquired on Julian Day 209 by HSL 2903. SupportFiles\B.3.1 Delayed Heave line.png All sounding systems were calibrated as detailed in the DAPR. 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 23, 24, and 25). 300kHz backscatter mosaic from data acquired by S-222. SupportFiles\B.4 S222 Backscatter.png 300kHz backscatter mosaic from data acquired by 2903. SupportFiles\B.4 2903 300kHz backscatter.png 400kHz backscatter mosaic from data acquired by 2903. SupportFiles\B.4 2903 400kHz Backscatter.png NOAA Profile Version 2022 H13611_MB_VR_LWD CARIS VR Surface (CUBE) Variable Resolution 5.72 24.97 NOAA_VR Complete MBES H13611_MB_VR_LWD_Final CARIS VR Surface (CUBE) Variable Resolution 5.72 24.97 NOAA_VR Complete MBES H13611_MBAB_2m_S222_300kHz_1of3 MB Backscatter Mosaic 2 N/A Complete MBES H13611_MBAB_2m_2903_300kHz_2of3 MB Backscatter Mosaic 2 N/A Complete MBES H13611_MBAB_2m_2903_400kHz_3of3 MB Backscatter Mosaic 2 N/A Complete MBES Complete coverage requirements were met by 100% complete coverage MBES as specified under section 5.2.2.2 of the 2022 HSSD. All bathymetric grids for H13611 meet density requirements per the 2022 HSSD (Figure 26). There are two holidays within the coverage achieved for H13611 as discussed in Section A.4. H13611 data density standards. SupportFiles\B.5.2 Density.png No Horizontal and Vertical Control Report (HVCR) is required for this survey. Low Water Datum IGLD-1985 ERS via VDATUM OPR-W386-TJ-22_NAD83_2011_VDatum_LWD_IGLD85 North American Datum 1983 Projected UTM 17 Trimble-RTX service was used with an Applanix POS MVv5 GNSS_INS system to obtain highly accurate ellipsoidally referenced position data to meet ERS specifications for H13611 MBES data from vessels HSL 2903 and S-222. The Wide Area Augmentation System (WAAS) was used for real-time horizontal control during data acquisition on vessels HSL 2903 and S-222. US5PA22M 15000 19 2022-04-20 2022-04-20 US4PA21M 80000 14 2021-10-15 2022-03-31 Surveyed soundings and contours were compared against previously charted data on ENCs US4PA21M and US5PA22M. Depth values were found to be in general agreement with previously charted soundings across most of the survey area. However, differences in soundings and contours were observed over the shoal located offshore of the northwest edge of Presque Isle. The largest discrepancies in soundings were found on the eastern edge of the shoal, but are outside of the recommended traffic routes (Figure 27). The hydrographer does not believe these changes pose an immediate danger to navigation. Nine newly discovered features are included in the Final Feature File (FFF) and none were considered to be navigational hazards. No danger to navigation (DTON) reports were submitted for this survey and all data acquired on H13611 are recommended to supersede prior data. Comparison of charted soundings in black with surveyed soundings in red. Recommended traffic routes shown in grey dashed arrows. Area within the blue box showed greatest difference but is not considered a navigational hazard. SupportFiles\D.1.2 Sounding Differences.png No previously charted features were assigned for investigation. However, the field unit decided to acquire additional coverage outside of the sheet limits over a charted dumping ground to confirm the least depth (Figure 28). The south east corner of the dumping ground has coverage from survey H13610. Additional coverage, outlined in blue, acquired outside of sheet limits to confirm least depth over charted dumping ground. SupportFiles\D.1.3 Dump Ground.png Nine uncharted features were identified, investigated, and are recommended for charting. None of them are considered dangerous to navigation and no DTON reports were submitted for this survey. Reference the Final Feature File for further information. 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. No Aids to navigation (ATONs) exist for this survey. No Maritime Boundary Points were assigned for this survey. Nine bottom sample locations were assigned for investigation (Figures 29 and 30). Details regarding bottom sample attribution can be found in the Final Feature File. H13611 bottom sample locations in green plotted over the 2m resolution backscatter mosaics. SupportFiles\D.2.3 Bottom Sample Locations.png Example bottom type collected for H13611. SupportFiles\D.2.3 Example bottom sample.JPG No overhead features exist for this survey. No submarine features exist for this survey. No platforms exist for this survey. No ferry routes or terminals exist for this survey. No abnormal seafloor or environmental conditions exist for this survey. No present or planned construction or dredging exist within the survey limits. No new surveys or further investigations are recommended for this area. No new ENC scales are recommended for this area. 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. 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. 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. Matthew J. Jaskoski, CDR/NOAA Chief of Party 2022-11-14 Sydney M. Catoire, LT/NOAA Field Operations Officer 2022-11-14 Erin K. Cziraki Chief Survey Technician 2022-11-14