Report for H12990

Start Date:	2017-08-22
End Date:	2017-11-02

These data are not to be used for navigation.
For navigation please refer to NOS Nautical Charts.

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Visit the full NCEI Bathymetry Viewer.

Survey Products

NOAA/NOS Descriptive Reports and Metadata Documents
Products listed in these reports may not reflect final products available through NCEI.
H12990_DR.pdf	10.97MB	The document may be read using a free Adobe Reader.
H12990_DR.xml	46.7KB	Descriptive Report in XML format. May be opened using a web browser or text viewer.
NOAA/NOS ISO metadata record
H12990 View / Download H12990.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.

Bathymetric Attributed Grid (BAG) Data
Survey products may use different units, datums or projections than the associated survey. Please consult product-specific metadata for additional details.
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.
H12990_MB_50cm_MLLW_1of1.bag	141.55MB
Ellipsoid Referenced BAG Files
Ellipsoid referenced Bag files have a vertical datum that may differ materially from the charted datum. Please refer to the file level metadata to ensure proper display.
H12990_MB_50cm_Ellipsoid_1of1.bag	132.33MB

GeoImagePDF
H12990_GeoImage.pdf	14.73MB	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
H12990_SSSAB_2m_540kHz_2of2.tiff	8.90MB	NOAA/NOS TIFF sidescan sonar mosaic survey image. The mosaic may be viewed with a standard image viewer.
H12990_SSSAB_2m_540kHz_1of2.tiff	9.56MB	NOAA/NOS TIFF sidescan sonar mosaic survey image. The mosaic may be viewed with a standard image viewer.
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.
H12990_MBAB_1m_BHII_400kHz_1of1.tif	7.36MB	NOAA/NOS TIFF multibeam acoustic backscatter mosaic survey image.

NOAA/NOS Tide Note in PDF Format
H12990_tn.pdf	68.4KB	This document may be read using a free Adobe Reader.
NOAA/NOS Tide Zone in PDF format
H12990_tz.pdf	216.8KB	This document may be read using a free Adobe Reader.

Project Sketch in JPEG format
H12990_ProjectSketch.jpg	102.6KB	Project sketch image with highlighted survey area.

Locality

Sublocality

State or Region

Chesapeake Bay

South of Hooper Island

Maryland

Start Date	End Date	Approval Date
2017-08-22	2017-11-02	2017-12-28

Project Number	Project Name	Purpose
OPR-E349-BH2-17

License Information
A license has not been assigned to these data and products. See the NCEI Archive page for data licensing details and FAQs.

Vertical Datum	Horizontal Datum	Projection	Scale
Mean Lower Low Water	North American Datum 1983	Projected UTM 18N	10000

ENCs

RNCs

US5VA21M

Vessel(s)

Chief(s) of Party

NOAA BAY HYDRO II

LTJG Sarah L. Chappel

Manufacturer	Model	Instrument Type
SonTek	CastAway-CTD	Conductivity, Temperature, and Depth Sensor
Valeport	MiniSVS	Sound Speed System
Kongsberg Maritime	EM 2040	MBES
EdgeTech	4200	SSS
Applanix	POS MV 320 v5	Positioning and Attitude System

Data in Archive	Size (in GB)	Date Archived	Data Types Surveyed
Raw and Processed	116.647	2020-10-07 15:22:25.0	BACKSCATTER, SIDE SCAN, BATHYMETRY