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Report for H12305 Locality: Chesapeake Bay Sublocality: Northeast of Point No Point State(s) or Region(s): Maryland Start Date: 2013-04-11 End Date: 2013-12-10 These data are not to be used for navigation. For navigation please refer to NOS Nautical Charts. Download times vary depending on file size and data transfer rates. Download All Products for H12305
Visit the full NCEI Bathymetry 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.
H12305_DR.pdf	8.12MB	The document may be read using a free Adobe Reader.
H12305_DR.xml	59.6KB	Descriptive Report in XML format. May be opened using a web browser or text viewer.
NOAA/NOS ISO metadata record
H12305 View / Download H12305.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.
Variable Resolution Bathymetric Attributed Grid
H12305_MB_VR_MLLW_1of2.bag	820.69MB	The Variable Resolution BAG format is a gridded, multi-dimensional, multi-resolution bathymetric data file (see Open Navigation Surface). Currently supported with open source GDAL. The BAGXYZ files are ascii representations of the BAG data in XYZ format, but do not include uncertainty.
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.
H12305_VB_4m_MLLW_2of2.bag	328.0KB
H12305_MB_VR_MLLW_1of2.bag	820.69MB
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. 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.
H12305		XYZ format.

Images

GeoImagePDF
H12305_GeoImage.pdf	48.66MB	NOAA/NOS Layered GeoSpatial Image PDF File. Created by NOS to include chart and survey layers in a georeferenced pdf format.
NOAA/NOS sidescan sonar mosaic in TIFF format
H12305_SSSAB_1m_400kHz_1of2.tiff	82.88MB	NOAA/NOS TIFF sidescan sonar mosaic survey image. The mosaic may be viewed with a standard image viewer.
H12305_SSSAB_1m_400kHz_2of2.tiff	81.79MB	NOAA/NOS TIFF sidescan sonar mosaic survey image. The mosaic may be viewed with a standard image viewer.

Bottom Samples and Tide Documents

NOAA/NOS bottom sample document in PDF or ASC format
H12305_BottomSamples.ascii	0.8KB	NOAA/NOS bottom sample document in PDF or ASC format.
NOAA/NOS Tide Note in PDF Format
H12305_tn.pdf	506.0KB	This document may be read using a free Adobe Reader.
NOAA/NOS Tide Zone in PDF format
H12305_tz.pdf	429.5KB	This document may be read using a free Adobe Reader.

Project Documents

Project Sketch in JPEG format
H12305_ProjectSketch.jpg	79.5KB	Project sketch image with highlighted survey area.
Data Acquisition and Processing Report in PDF format
OPR-E349-BH2-12_DAPR.pdf	9.01MB	This document may be read using a free Adobe Reader.

Survey Metadata

Survey Summary

Locality Sublocality State or Region Chesapeake Bay Northeast of Point No Point Maryland

Start Date End Date Approval Date 2013-04-11 2013-12-10 2015-03-13

Project Number Project Name Purpose OPR-E349-BH2-12 Central Chesapeake Bay

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 10000

Affected Products

ENCs RNCs US5VA22M 12261 12233

Survey Equipment

Vessel(s) Chief(s) of Party NOAA BAY HYDRO II

Manufacturer Model Instrument Type Kongsberg Maritime EM 2040 MBES

Source Data at NCEI

Data in Archive Size (in GB) Date Archived Data Types Surveyed Raw and Processed 270.828 2016-09-08 12:48:11.0 BACKSCATTER, SIDE SCAN, BATHYMETRY