[GRASS-user] Data Source: Interbase/Firebird

[John Callahan]

Reading the info on http://nhd.usgs.gov/data.html, it looks like the NHD 
is available as ESRI personal geodatabase (mdb files, which is the 
native format of the NHD data model developed by USGS) as well as 
shapefiles (which includes basic geometry and attributes, no 
relationships, etc...)

OGR can read/write shapefiles and read-only ESRI personal personal 
geodatabase (MDB) files, http://www.gdal.org/ogr/ogr_formats.html.

- John

**************************************************
John Callahan, Geospatial Application Developer
Delaware Geological Survey, University of Delaware
Email: john.callahan at udel.edu
**************************************************




Rich Shepard wrote:
>   The USGS National Hydrologic Database is a great resource for those 
> of us
> who need these data. The state files are huge (by comparison to most with
> which I've worked): Oregon is 425M and Nevada is 330M. Unfortunately
> (perhaps fortunately) they're not in ESRI or MS format, but Borland's
> Interbase/Firebird format.
>
>   I know that GDAL works on raster data and ogr on vector data from ESRI
> .shp and MapInfo. I assume the NHD files are vector. Will v.in.ogr 
> work on
> them and is there a linux-based tool to convert the attribute data?
>
> Rich
>
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