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 H12411 Locality: Long Island Sound Sublocality: Approaches to Norwalk, CT State(s) or Region(s): Connecticut Start Date: 2012-08-28 End Date: 2012-09-27 These data are not to be used for navigation. For navigation please refer to NOS Nautical Charts. Download All Products for H12411 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. H12411_DR.pdf 8.96MB The document may be read using a free Adobe Reader. NOAA/NOS ISO metadata record H12411 View / Download H12411.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. H12411_MB_2m_MLLW_2of2.bag 14.65MB H12411_MB_2m_MLLW_Combined.bag 47.75MB H12411_MB_50cm_MLLW_1of2.bag 579.84MB NOAA/NOS Sounding Data Download data from the Point Store database via NEXT (NCEI Extract System). Point soundings are from the survey Smooth Sheet or of similar density. Depths in meters. Horizontal datum is (converted to) NAD83 if possible. Vertical datum is (converted to) Mean Lower Low Water if possible. Please check the associated metadata to confirm the correct datums. The data file format is : SurveyID, Long, Lat, Depth. H12411 XYZ format. Images GeoImagePDF H12411_GeoImage.pdf 22.70MB 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. H12411_MBAB_2m_3101_400kHz_1of3.tiff 4.06MB NOAA/NOS TIFF multibeam acoustic backscatter mosaic survey image. H12411_MBAB_2m_3102_400kHz_2of3.tiff 4.07MB NOAA/NOS TIFF multibeam acoustic backscatter mosaic survey image. H12411_MBAB_2m_S222_400kHz_3of3.tiff 5.60MB NOAA/NOS TIFF multibeam acoustic backscatter mosaic survey image. Bottom Samples and Tide Documents NOAA/NOS bottom sample document in PDF or ASC format H12411_BottomSamples.ascii 1.7KB NOAA/NOS bottom sample document in PDF or ASC format. NOAA/NOS Tide Note in PDF Format H12411_tn.pdf 44.4KB This document may be read using a free Adobe Reader. NOAA/NOS Tide Zone in PDF format H12411_tz.pdf 0.58MB This document may be read using a free Adobe Reader. Project Documents Project Sketch in JPEG format H12411_ProjectSketch.jpg 69.2KB Project sketch image with highlighted survey area. Data Acquisition and Processing Report in PDF format OPR-B340-TJ-12_DAPR.pdf 4.57MB This document may be read using a free Adobe Reader. Survey Metadata Survey Summary Locality Sublocality State or Region Long Island Sound Approaches to Norwalk, CT Connecticut Start Date End Date Approval Date 2012-08-28 2012-09-27 2014-04-30 Project Number Project Name Purpose OPR-B340-TJ-12 Long Island Sound, NY Update Nautical Chart(s) Source of Original Data and License Information License Information 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 (CC0-1.0). View the license deed. View the legal code. Reference System Information Vertical Datum Horizontal Datum Projection Scale Mean Lower Low Water North American Datum 1983 10000 Survey Tide Stations COOPS Tide Station ID Kings Point, New York 8516945 Bridgeport, Connecticut 8467150 New Haven, Connecticut 8465705 Affected Products ENCs RNCs US5CN11M 12368 Junction Surveys H12489 H12412 H10565 Survey Equipment Vessel(s) Chief(s) of Party THOMAS JEFFERSON Jensen Launch 3101 THOMAS JEFFERSON Jensen Launch 3102 NOAA Ship THOMAS JEFFERSON Lawrence T. Krepp Manufacturer Model Instrument Type Reson 7125 SV1 MBES Reson 7125 ROV MBES Source Data at NCEI Data in Archive Size (in GB) Date Archived Data Types Surveyed Raw and Processed 300.989 2020-09-14 15:01:18.0 BATHYMETRY