NOAA > NESDIS > NCEI (formerly NGDC) > Marine Geology and Geophysics > Bathymetry & Relief privacy policy  All Bathy/Relief Coastal DEMs Fishing Global Lakes Multibeam NOS

Report for H13941 Locality: Offshore Chicago and Michigan City Sublocality: Michigan City Harbor State(s) or Region(s): Michigan Indiana Start Date: 2024-07-20 End Date: 2024-09-20 These data are not to be used for navigation. For navigation please refer to NOS Nautical Charts. Download All Products for H13941 Download times vary depending on file size and data transfer rates. Individual product files may be downloaded via the links below. Launch this map service in full-screen view | Visit the full NCEI Bathymetric Data Viewer Survey Products Descriptive Report and Metadata Documents NOAA/NOS Descriptive Reports and Metadata Documents Products listed in these reports may not reflect final products available through NCEI. H13941_DR.pdf 1.54MB The document may be read using a free Adobe Reader. H13941_DR.xml 67.0KB Descriptive Report in XML format. May be opened using a web browser or text viewer. NOAA/NOS ISO metadata record H13941 View / Download H13941.xml Usually presented as an XML document, which captures the basic characteristics of HSMDB metadata verified from H10000 (1982) to the present as well as F00200 (1965) to the present. Bathymetry Survey products may use different units, datums or projections than the associated survey. Please consult product-specific metadata for additional details. Bathymetric Attributed Grid (BAG) Data The BAG format is a gridded, multi-dimensional bathymetric data file (see Open Navigation Surface). Readable with various applications such as the free CARIS Easy View, ESRI ArcGIS or open source GDAL. The BAGXYZ files are ascii representations of the BAG data in XYZ format, but do not include uncertainty. H13941_MB_2m_LWD_2of2.bag 158.42MB H13941_MB_1m_LWD_1of2.bag 653.29MB Images GeoImagePDF H13941_GeoImage.pdf 20.67MB NOAA/NOS Layered GeoSpatial Image PDF File. Created by NOS to include chart and survey layers in a georeferenced pdf format. NOAA/NOS multibeam acoustic backscatter mosaic in TIFF format The multibeam acoustic backscatter mosaic is readable with various applications such as the free CARIS Easy View, or ESRI ArcGIS geospatial visualization software. H13941_MBAB_2m_Substantial_300kHz_1of2.tif 53.59MB NOAA/NOS TIFF multibeam acoustic backscatter mosaic survey image. H13941_MBAB_2m_Benthos_300kHz_2of2.tif 25.41MB NOAA/NOS TIFF multibeam acoustic backscatter mosaic survey image. Bottom Samples and Tide Documents NOAA/NOS bottom sample document in PDF or ASC format H13941_BottomSamples.ascii 1.9KB NOAA/NOS bottom sample document in PDF or ASC format. Zip file containing bottom sample images and a shapefile of their locations H13941_BottomSamples_shp_images.zip 18.02MB Images may be viewed as standalone products or the shapefile can also be used to display where the images were taken. Project Documents Data Acquisition and Processing Report in PDF format OPR-Y393-KR-24_DAPR.pdf 14.54MB This document may be read using a free Adobe Reader. Survey Metadata Survey Summary Locality Sublocality State or Region Offshore Chicago and Michigan City Michigan City Harbor Michigan Indiana Start Date End Date Approval Date 2024-07-20 2024-09-20 2025-04-11 Project Number Project Name Purpose OPR-Y393-KR-24 Source of Original Data and License Information License Information These data were produced under contract with NOAA and any potential copyright was assigned to NOAA. NOAA waives any potential copyright and related rights in these data worldwide through the Creative Commons Zero 1.0 Universal Public Domain Dedication (CC0-1.0). View the license deed. View the legal code. Reference System Information Vertical Datum Horizontal Datum Projection Scale Low Water Datum IGLD-1985 North American Datum 1983 (2011) Projected UTM 16 5000 Affected Products ENCs RNCs US5CHIHV US4MI2AM US4IN1DD US4IN1CE US4IN1CD Junction Surveys H13949 H13948 H13367 Survey Equipment Vessel(s) Chief(s) of Party R/V Substantial R/V Benthos Nicholas Damm, CH Manufacturer Model Instrument Type Applanix POS MV OceanMaster Positioning and Attitude System AML Oceanographic AML-3 LGR Sound Speed System AML Oceanographic 3-RT Velocity Probe Sound Speed System AML Oceanographic MVP30-350 Conductivity, Temperature, and Depth Sensor Kongsberg Maritime EM 2040C MBES Source Data at NCEI Data in Archive Size (in GB) Date Archived Data Types Surveyed Raw and Processed 805.452 2025-09-16 19:39:04.0 BACKSCATTER, BATHYMETRY