Report for H12494

Report for H12494

Locality: Portland, ME
Sublocality: Portland Harbor
State(s) or Region(s): Maine

Start Date: 2012-06-27
End Date: 2012-07-19


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


Downloads may take a long time, depending on file size and data transfer rates.



Download All Products for H12494

Visit the full NCEI Bathymetry Viewer.

Survey Products

Descriptive Report and Metadata Documents

NOAA/NOS Descriptive Report
Products listed in the project descriptive report (DR) may not reflect final products available through NCEI.
H12494_DR.pdf 9.91MB The document may be read using a free Adobe Reader.
H12494_DR.xml 30.0KB Descriptive Report in XML format.
May be opened using a web browser or text viewer.
NOAA/NOS ISO metadata record
H12494 View / Download H12494.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.
H12494_MB_50cm_MLLW_1of2.bag 210.27MB
H12494_MB_1m_MLLW_2of2.bag 39.28MB
H12494_MB_1m_MLLW_combined.bag 79.54MB
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.
H12494 XYZ format.

Images

GeoImagePDF
H12494_GeoImage.pdf 36.58MB 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.
H12494_MBAB_2m_S3002_300kHz_1of1.tfw 91 Bytes NOAA/NOS TIFF multibeam acoustic backscatter mosaic survey image.
H12494_MBAB_2m_S3002_300kHz_1of1.tiff 6.30MB NOAA/NOS TIFF multibeam acoustic backscatter mosaic survey image.

Bottom Samples and Tide Documents

Bottom Sample Data
NOAA/NOS bottom sample listing in IMLGS (pre-1989)
Link to H12494 in IMLGS (pre-1989 samples) Search NOAA/NOS seabed samples submitted to IMLGS through NMNH (pre-1989). Modern survey bottom samples are not currently viewable on a map service.
NOAA/NOS bottom sample document in PDF or ASC format
H12494_BottomSamples.ascii 1.1KB NOAA/NOS bottom sample document in PDF or ASC format.
NOAA/NOS Tide Note in PDF Format
H12494_tn.pdf 57.3KB This document may be read using a free Adobe Reader.
NOAA/NOS Tide Zone in PDF format
H12494_tz.pdf 0.70MB This document may be read using a free Adobe Reader.

Project Documents

Project Sketch in JPEG format
H12494_ProjectSketch.jpg 365.7KB Project sketch image with highlighted survey area.
Data Acquisition and Processing Report in PDF format
S-A906-NRT5-12_DAPR.pdf 7.11MB This document may be read using a free Adobe Reader.

Survey Metadata