S-G901-NRT2-14St. Johns River, FLJacksonville, FLNRT2H124093Jacksonville is a MTS port and nautical charts of the area need updated bathymetry. The last surveys in the area are from 2002 and 2003. The Jacksonville Docking Pilots have requested a hydrographic survey in Anchorage Area "B", south of Long Beach Range. It is the intent of this survey to supersede all bathymetry, seafloor features, and bottom characteristics within the assigned survey area as defined by these instructions for updating of NOAA charts 11489, 11490 and 11491.Broward River to Hendricks Pt.FloridaUnited States100002014Erik AndersonNavigable Area2014-04-242014-07-142014-12-03Multibeam Echo Sounder - R2 SonicSide Scan Sonar - Edgetech 4125metersUniversal Transverse Mercator (UTM)UTCPacific Hydrographic BranchThe purpose of this survey is to provide contemporary surveys to update National Ocean Service (NOS) nautical charts. All separates are filed with the hydrographic data. Notes in red were generated during office processing. The processing branch concurs with all information and recommendations in the DR unless otherwise noted. Page numbering may be interrupted or non-sequential. All pertinent records for this survey, including the Descriptive Report, are archived at the National Centers for Environmental Information (NCEI): https://www.ncei.noaa.gov/NOAAH12409 is the St. John's River, Jacksonville, Florida commencing at Drummond Point and trending inland south and west to the Interstate 95 Bridge, the southern extent of this survey sheet. The river was surveyed with MBES concurrent with Side Scan Sonar (SSS) imagery to the four meter contour.30.412461111181.680397222230.311008333381.5872222222S-G901-NRT2-14/H12409 St. Johns River, FL, Area SurveyedSupportFiles\area_surveyed_rainbow_ bathy_and_Limits.jpgIn several areas within the survey limits hydrography did not extend entirely to the 4 meter contour. These areas were deliberately avoided in the interest of vessel and crew safety.Jacksonville is a MTS port and nautical charts of the area need updated bathymetry. The last surveys in the area are from 2002 and 2003. The Jacksonville Docking Pilots have requested a hydrographic survey in Anchorage Area "B", south of Long Branch Range. It is the intent of this survey to supersede all bathymetry, seafloor features, and bottom characteristics within the assigned survey area as defined by these instructions for updating of NOAA charts 11489, 11490 and 11491.The entire survey is adequate to supersede previous data.Object Detection MBES coverage or MBES and 200 percent SSS coverage collected concurrently (skunk stripe) were acquired for H12409 as specified by Hydrographic Survey Project Instructions dated 5/22/2013 and all other applicable direction. The intent of this survey is to supersede all bathymetry, sea floor features, and bottom characteristics within the survey boundaries.Inshore limit to 20 meters water depth200% SSS with concurrent SBES or MBES, or Object Detection MBESGreater than 20 meters water depthComplete MultibeamSurvey coverage was in accordance with the requirements in the Project Instructions and the HSSD.H12409 Side Scan Sonar and Multibeam Sonar Coverage Overlays; approx 3.6 SNMSupportFiles\coverage_overlays.jpgS121000017801840190000178018401901000003.62014-07-142014-07-152014-07-172014-08-042014-08-202014-08-262014-08-272014-09-242014-09-252014-09-302014-10-222014-10-282014-11-102014-12-022014-12-03Refer 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.S1210100.5Survey Launch S1210SupportFiles\S1210_pic.jpgR2 Sonic2024MBESEdgetech4125SSSApplanixPOS M/V5Positioning and Attitude SystemOdomDigibar ProSound Speed SystemMultibeam Echosounder (MBES) crosslines totaled 19 linear nautical miles comprising 10 percent of main scheme acquisition thus the prescribed 8 percent (2014 HSSD, 5.2.4.3) for skunk stripe crossline acquisition was fully attained. All crosslines agreed to within 0.4 meters at two standard deviations. Figures below include: (1.) A Difference Surface created on crossline surfaces and mainscheme surfaces and (2.) Crossline-to-Mainscheme Surface Difference Statistics, generated via the CARIS HIPS 8.1 Compute Statistical Tool. Highest sounding differences occurred at the southern end of H12409, near the Acosta Bridge/Hwy 13, where differences exceeded 3 meters in small areas. Migrating sand waves in this dynamic area of the river may have caused the disparity in depths.H12409 Difference Surface, created from crossline and mainscheme bathymetrySupportFiles\inset 3.JPGH12409 Difference Surface StatisticsSupportFiles\xl_surf_diff_stats.jpgTidal error is not applicable for this project. Tidal Constituent And Residual Interpolator (TCARI) automatically calculates the error associated with water level interpolation. This error is incorporated into the residual/harmonic solutions and included in the Total Propagated Error (TPE) for the survey. Uncertainty values input into TCARI model are 2-sigma. Pydro will automatically supply 1-sigma values to CARIS when computing uncertainty. Uncertainty values of submitted, finalized grids were calculated in CARIS using the "Greater of the Two" of total propagated uncertainty and standard deviation (scaled to 95%). All project depths were less than 100meters thus the IHO Order 1 Formula: "((0.5^2 + ((Depth *0.013)^2 )) ^0.5)-Uncertainty," was implemented for quality control analysis. Therefore survey depths of 4~18 meters had an acceptable uncertainty budget range of 0.500 meters to .564 meters. Ninety-five (95) percent (two standard deviations) of the survey soundings had an acceptable (>0meters) IHOness value of 0.08 meters. Discrepancy areas may have been the result of migrating sand waves or dredging operations. See IHO graphics below.H12409 "IHOness" Surface and Areas where IHO Error Budget was ExceededSupportFiles\ihoness_graphic_useMe.jpgH12409 "IHOness" StatisticsSupportFiles\CaptureStat.JPGThe statement "Tidal error is not applicable to this project" is incorrect. Tidal error is applicable to this project but is not applied in the Compute TPU step in Caris since it is already incorporated into the TCARI model.H12409 junctions H12408, a VBES and SSS Survey completed by NRT2 during the 2013 Field Season. Using the CARIS HIPS 8.1 Surface Difference Tool, analysis of the two surveys showed good agreement in most areas. A mean of -0.05m and standard deviation of 0.44m (two sigma) were assessed with the CARIS Compute Statistics Tool and binned at 0.10 meters. A small area (4m X 45m) in the NW edge of the junction exhibited depth differences above 1 meter. See figures below.H12409 Junction to H12408 and Difference SurfaceSupportFiles\Junction_Graphic_1.jpgStatistics, Junction of H12409 to H12408SupportFiles\Junction3.jpgH12408100002013Navigation Response Team 2EH12409 junctions H12408, a VBES and SSS Survey completed by NRT2 during the 2013 Field Season.Sonar system quality control checks were conducted as detailed in the quality control section of the DAPR.None ExistThere were no conditions or deficiencies that affected equipment operational effectiveness.None ExistThere were no other factors that affected corrections to soundings.Sound Speed Cast Frequency: CTD casts were performed and the data loaded into the R2Sonic (flat-faced) acquisition software prior to logging data. Additional casts were made at four (4) hour intervals or more frequently when observed surface speed values changed significantly (3 meters per second or more). CTD cast were post processed using CARIS HIPS software. No significant sound speed artifacts were evident throughout the entire survey.Significant sound speed differences where not observed thus the survey was not zoned for sound speeds from differing water masses.All equipment and survey methods were used as detailed in the DAPR.All data reduction procedures conform to those detailed in the DAPR.All sounding systems were calibrated as detailed in the DAPR.Raw Backscatter was logged as a .r2s file and has been sent to the Processing Branch. Backscatter was not processed by the field unit.Backscatter mosaics were not produced at the Processing Branch because the software used does not support .R2S files.CARISHIPS8.1CARISSIPS8.1NOAA Extended Attribute Version 5.3.2NOAA Extended Attribute Version 5.3.2 was used in conjunction with CARIS BDB Version 4 for feature processing, management and creation for the Final Features File.H12409_MB_50cm_MLLWCUBE0.5000100NOAA_0.5mObject DetectionH12409_MB_50cm_MLLW_FinalCUBE0.5000100NOAA_0.5mObject DetectionNRT2_4125p_HF_100_SSSSSS Mosaic10100NOAA_1m100% SSSNRT2_4125p_HF_200_SSSSSS Mosaic10100NOAA_1m200% SSSAdditional information discussing the vertical or horizontal control for this survey can be found in the accompanying HVCR.Mean Lower Low WaterTCARII-295 Bridge, FL870357Mayport Bar, Pilots Dock, FL870218G901NRT22014.tcFinal ApprovedG901NRT22014.tcFinal2014-12-092014-12-12COOPs provided time series data which were tabulated in metric units (meters), relative to MLLW and on Greenwich Mean Time on the 1983-2001 National Tidal Datum Epoch (NTDE).The water level file reported in Table 9 (G901NRT22014.tc) is incorrect. The correct files are 8720219.tid and 8720357.tid.North American Datum of 1983 (NAD83)Zone 17 NorthCanaveral, Florida 289kHzCanaveral, Florida 289kHz was utilized for horizontal positioning of H12409.Charts that overlapped H12409's survey area included 11491_3, 11491_5, and 11491_6. A 10 meter radius "Selected Soundings" layer (produced from the H12409_MB_50cm_MLLW "Depths" attributed in CARIS HIPS) was overlaid onto the charts and compared/averaged with each charted sounding. Charted depths circled in green indicate where H12409 soundings are within 2 feet of charted depths. Charted depths circled in blue indicate where H12409 soundings are more than 2 feet deeper than charted. Charted depths circled in red are where survey soundings are 2 feet or shoaler than charted depth. See following index, figures, and discussions below.H12409 Chart Index for charted sounding comparisonSupportFiles\comp_index.jpg1149126720000382012-062014-03-112014-03-15The majority (85 percent) of survey soundings were in good agreement (within 2 feet) of charted soundings. Notable exceptions occurred in the following areas: 1.) The south side of Drummond Creek Range, where scouring or dredging has deepened the seabed by more than two feet from charted soundings. 2.) The west side of the Fuller Warren Bridge (I95), where shoaling has occurred by more than 2 feet as compared to charted soundings.Survey vs Charted (11491_3) Soundings, Area 1SupportFiles\ChartComp_11491_3_1.jpgSurvey vs Charted (11491_3) Soundings, Area 2SupportFiles\ChartComp_11491_3_2.jpgSurvey vs Charted (11491_3) Soundings, Area 3SupportFiles\ChartComp_11491_3_3.jpgSurvey vs Charted (11491_3 )Soundings, Area 4SupportFiles\ChartComp_11491_3_4.jpgSurvey vs Charted (11491_3) Soundings, Area 5SupportFiles\ChartComp_11491_3_5.jpgSurvey vs Charted (11491_3) Soundings, Area 6SupportFiles\ChartComp_11491_3_6.jpgSurvey vs Charted (11491_3) Soundings, Area 7SupportFiles\ChartComp_11491_3_7.jpg1149126920000382012-062014-03-112014-03-15H12409 soundings slightly overlap onto Chart 11491_5 in the vicinity of the mouth of Arlington River and Exchange Island. Using the aforementioned comparison convention a comparison between survey and charted soundings was accomplished. Survey soundings exhibited good general agreement (within 2 feet) of charted soundings. See figure below. Survey vs Charted (11491_5) SoundingsSupportFiles\ChartComp_11491_5_1.jpg1149127020000382012-062014-03-112015-03-15H12409 soundings slightly overlap onto Chart 11491_6 in the vicinity of the mouth of the Trout River at approximately Lat 30-23-26.6 Lon081-37-46.5. Using the aforementioned comparison convention a comparison between survey and charted soundings was accomplished. Survey soundings exhibited good general agreement (within 2 feet) of charted soundings. See figure below. Survey vs Charted (11491_6) SoundingsSupportFiles\ChartComp_11491_6.jpgNo Maritime Boundary Points were assigned for this survey. All charted features appeared to be in their appropriate locations and serving their intended purposes.No uncharted features exist for this survey.Multiple uncharted features were identified during office review.1S-G901_NRT2-14-H12409_DTON-Report2014-12-03Danger to Navigation Reports are included in Appendix II of this report.Three additional DTONs were identified during office review and submitted to MCD.No shoals or potentially hazardous features exist for this survey.Three shoals were discovered north of the Fuller Warren Bridge and submitted as DTONs during office review. Six (6) separate channels exist within the vicinity of H12409. All occur along the St Johns River. Trending from the north to south they are: 1.) Broward Point Turn 2.) Drummond Creek Range 3.) Trout River Cut Range 4.) Chaseville Turn 5.) Long Branch Range 6.) Terminal Channel. With the exception of 4 minor discrepancies, surveyed soundings were in excellent agreement with charted channel tabulations. Channels with minor depth discrepancies occurred in the Drummond Creek Range and the Terminal Channel where sediment accretion is encroaching their boundaries. Please see figures below for additional information.Broward Point Turn Depths, Chart 11491, 38th Edition.SupportFiles\Broward_Graphic_DR.jpgDrummond Creek Range depth analysisSupportFiles\drummond_dr_graphic.jpgTrout River Cut Range depth analysisSupportFiles\TroutCreek_Channel_graphic_DR.jpgChaseville Turn depth analysisSupportFiles\chaseville_DR_graphic.jpgLongbranch Range depth analysisSupportFiles\Longbranch_graphic_DR.jpgTerminal Channel depth analysisSupportFiles\terminal_channel_graphic_DR.jpgNo bottom samples were required for this survey.NRT2 completed a Limited Shoreline Investigation per Field Procedures Manual guidelines. All features were S57 attributed with the NOAA Extended Attribute Version 5.3.2 in CARIS BDB. Please reference the Final Features File (FFF) submitted with this project.No prior survey comparisons exist for this survey.All charted ATONs were correctly positioned and serving their intended purposes.All charted overhead features were present and serving their intended purposes.Submarine features exist for this survey, but were not investigated.No ferry routes or terminals exist for this survey.No platforms exist for this survey.No significant features 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 insets 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 and Specifications Deliverables Manual, 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.ErikAnderson2015-03-19