Bronze level automatically awarded US beta

This data has achieved Bronze level on 22 October 2015 which means this data makes a great start at the basics of publishing open data.

San Diego Bay, CA (P020) Bathymetric Digital Elevation Model(30 meter resolution) Derived From Source Hydrographic SurveySoundings Collected by NOAA

Description

Bathymetry for San Diego Bay was derived from one survey containing 8,500soundings. One older, overlapping, less accurate survey was deleted. Theaverage separation between soundings was 72 meters. The survey used datedfrom 1954. The total range of sounding data was 0.6 to -10.7 meters at meanlow water. Mean high water values between 1.1 and 1.3 meters wereassigned to the shoreline. No points were found to be inconsistent with thesurrounding data. DEM grid values outside the shoreline (on land)were assigned null values (-32676).San Diego Bay has four 7.5 minute DEMs and a single one degree DEM.The 1 degree DEMs were generated from the higher resolution 7.5minute DEMs which covered the estuary. A Digital Elevation Model(DEM) contains a series of elevations ordered from south to northwith the order of the columns from west to east. The DEM isformatted as one ASCII header record (A- record), followed by aseries of profile records (B- records) each of which include a shortB-record header followed by a series of ASCII integer elevations(typically in units of 1 centimeter) per each profile. The lastphysical record of the DEM is an accuracy record (C-record).The 7.5-minute DEM (30- by 30-m data spacing) is cast on theUniversal Transverse Mercator (UTM) projection. It provides coveragein 7.5- by 7.5-minute blocks. Each product provides the samecoverage as a standard USGS 7.5-minute quadrangle but the DEMcontains over edge data. Coverage is available for many estuaries ofthe contiguous United States but is not complete.

General Information

Legal Information

This dataset has been created by US Government which means it is required to be in the public domain. However US copyright law only allows open access by US citizens, we have assumed the data is equivalently licensed as CC0 for the rest of the world as this is in the spirit of the US Government’s Open Data policy.

  • The rights statement is at

    http://catalog.data.gov/dataset/san-diego-bay-ca-p020-bathymetric-digital-elevation-model30-meter-resolution-derived-from-sourc Do you think this data is incorrect? Let us know

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    yes, and the rights are all held by the same person or organisation Do you think this data is incorrect? Let us know

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Practical Information

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Technical Information

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  • Find out how to contact someone about this data at

    http://catalog.data.gov/dataset/san-diego-bay-ca-p020-bathymetric-digital-elevation-model30-meter-resolution-derived-from-sourc Do you think this data is incorrect? Let us know

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    http://www.data.gov/issue/?media_url=http://catalog.data.gov/dataset/san-diego-bay-ca-p020-bathymetric-digital-elevation-model30-meter-resolution-derived-from-sourc Do you think this data is incorrect? Let us know