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 H12241 Locality: Central Chesapeake Bay Sublocality: 3 Nautical miles Southwest of Smith Island State(s) or Region(s): Virginia Maryland Start Date: 2010-07-04 End Date: 2010-11-13 These data are not to be used for navigation. For navigation please refer to NOS Nautical Charts. Download All Products for H12241 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. H12241.pdf 6.62MB The document may be read using a free PDF reader. NOAA/NOS ISO metadata record H12241 View / Download H12241.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) The BAG format is a gridded, multi-dimensional bathymetric data file readable with geospatial visualization software (various commercial solutions, freeware, and open source applications are available). The BAGXYZ files are ascii representations of the BAG data in XYZ format, but do not include uncertainty. H12241_MB_50cm_MLLW_3of3.bag 3.38MB H12241_MB_1m_MLLW_1of3.bag 155.49MB H12241_MB_2m_MLLW_2of3.bag 1.88MB 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 and delivered as .xyz. H12241 Imagery NOAA/NOS side scan sonar mosaic in TIFF format The side scan sonar mosaic is readable with geospatial visualization software (various commercial solutions, freeware, and open source applications are available). H12241_SSSAB_50cm_600kHz_1of2.tiff 197.13MB H12241_SSSAB_50cm_600kHz_2of2.tiff 196.41MB Bottom Samples and Tide Documents NOAA/NOS bottom sample document in PDF or ASC format Bottom Sample files may reference the Coastal Marine Ecological Classification Standard (CMECS) H12241_BottomSamples.ascii 1.1KB NOAA/NOS Tide Note in PDF Format H12241.tn.pdf 31.7KB NOAA/NOS Tide Zone in PDF format H12241_tz.pdf 3.08MB Project Documents Project Sketch in JPEG format Project sketch image with highlighted survey area. OPR-E349-KR-10(H12241).jpg 234.3KB Data Acquisition and Processing Report in PDF format OPR-E349-KR-10_DAPR.pdf 1.99MB Horizontal and Vertical Control Report in PDF Format OPR-E349-KR-10_HVCR.pdf 57.04MB Survey Metadata Survey Summary Locality Sublocality State or Region Central Chesapeake Bay 3 Nautical miles Southwest of Smith Island Virginia Maryland Start Date End Date Approval Date 2010-07-04 2010-11-13 2011-03-11 Project Number Project Name Purpose OPR-E349-KR-10 Central Chesapeake Bay, Maryland Update Nautical Chart(s) 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 Mean Lower Low Water North American Datum 1983 Projected UTM 18 10000 Survey Tide Stations COOPS Tide Station ID Ewell, Smith Island, Maryland 8571117 Lewisetta, Virginia 8635750 Affected Products ENCs RNCs US5VA16M 13003 12285 12280 12231 12230 12228 12225 Junction Surveys H12242 H12238 Survey Equipment Vessel(s) Chief(s) of Party R/V THEORY R/V Chinook Jonathan L. Dasler Manufacturer Model Instrument Type Seabird-Seacat SBE 19 Plus CTD Profiler Conductivity Temperature and Depth Brooke Ocean Technology Moving Vessel Profiler-30 Moving Vessel Profiler Bar Check AML SVP Plus Velocimeter Sound Velocity Probe AML SVP 70 Velocimeter Sound Velocity Probe Seabeam 2111 Trimble DMS132 DGPS Receiver Satellite DGPS Trimble Probeacon DGPS Receiver Satellite DGPS Teledyne RESON SeaBat 7125 MBES EG&G 4200-FS Sidescan Sonar - towfish EG&G 4200-HFL CSI MBX-3S DGPS Receiver Satellite DGPS Applanix TSS POS/MV 320 GPS Receiver Satellite GPS Source Data at NCEI Data in Archive Size (in GB) Date Archived Data Types Surveyed Raw and Processed 152.784 2012-03-20 SIDE SCAN, BATHYMETRY