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New Jersey Inland Bays, NJ (M080) Bathymetric Digital Elevation Model (30 meter resolution) Derived From Source Hydrographic Survey Soundings Collected by NOAA

Metadata Updated: November 12, 2020

Bathymetry for the New Jersey Inland Bays was derived from nineteen surveys containing 127,502 soundings. Four older, overlapping, less accurate surveys were omitted before tinning the data. The average separation between soundings was 45 meters. Eighteen of the nineteen surveys used dated from 1935 to 1940. The remaining survey, located in the southwest, dated from 1972. The total range of sounding data was 1.2 to -16.2 meters at mean low water. Mean high water values between 0.6 and 1.3 meters were assigned to the shoreline. Six points were found that were not consistent with the surrounding data. These were removed prior to tinning. DEM grid values outside the shoreline (on land) were assigned null values (-32676). The New Jersey Inland Bays have seventeen 7.5 minute DEMs and two one degree DEMs. The 1 degree DEMs were generated from the higher resolution 7.5 minute DEMs which covered the estuary. A Digital Elevation Model (DEM) contains a series of elevations ordered from south to north with the order of the columns from west to east. The DEM is formatted as one ASCII header record (A- record), followed by a series of profile records (B- records) each of which include a short B-record header followed by a series of ASCII integer elevations (typically in units of 1 centimeter) per each profile. The last physical record of the DEM is an accuracy record (C-record). The 7.5-minute DEM (30- by 30-m data spacing) is cast on the Universal Transverse Mercator (UTM) projection. It provides coverage in 7.5- by 7.5-minute blocks. Each product provides the same coverage as a standard USGS 7.5-minute quadrangle but the DEM contains over edge data. Coverage is available for many estuaries of the contiguous United States but is not complete.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

Dates

Metadata Date June 12, 2018
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) June 6, 1998 (publication)
Frequency Of Update irregular

Metadata Source

Harvested from NGDC MGG DEM

Additional Metadata

Resource Type Dataset
Metadata Date June 12, 2018
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) June 6, 1998 (publication)
Responsible Party NOAA National Centers for Environmental Information (Point of Contact)
Contact Email
Guid gov.noaa.ngdc.mgg.dem:new_jersey_inland_bays_m080_30m
Access Constraints Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Bbox East Long -74.165065
Bbox North Lat 39.680082
Bbox South Lat 38.941366
Bbox West Long -74.909707
Coupled Resource
Frequency Of Update irregular
Harvest Object Id 513b84ac-3359-4b69-a26e-8b7556f2b199
Harvest Source Id 4969dc3d-1269-48b4-a254-dfee8489c5c9
Harvest Source Title NGDC MGG DEM
Licence Not to be used for navigation. Although these data are of high quality and useful for planning and modeling purposes, they are not suitable for navigation. For navigation, please refer to the NOS nautical chart series., Produced by the NOAA National Centers for Environmental Information. Not subject to copyright protection within the United States.
Metadata Language eng; USA
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System urn:ogc:def:crs:EPSG::5866
Spatial Harvester True
Temporal Extent Begin 1935-01-01
Temporal Extent End 1972-01-01

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