Horizon SystemsNHDPlus Version 1 (Archive)DataTexas Gulf
 
 
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Texas Gulf (Hydrologic Region 12)

The Texas Gulf drainage area is composed of hydrologic region 12.

The Texas Gulf hydrologic regions are further divided into production units: 12 a, b, c, d, e, and f.

NHDPlus Shapefile and DBF components are distributed by hydrologic region.

NHDPlus ESRI Grid components are distributed by production units.

For more information please see Texas Gulf Release Notes in DOC, PDF.


Download instructions:

Right click on a file name in the table below and choose "save file to disk." 
(or)
Go to ftp.ftp.horizon-systems.com. Right click on a file and choose "save file to disk."
(or)
You may connect to the NHDPlus FTP site (ftp.ftp.horizon-systems.com) with an FTP client. FTP clients are generally faster than file transfer through a browser.

Texas Gulf

Filename Key
NHDPlusrrVnn_componentname.zip
where:
rr is the hydrologic region number
nn is the currently available version of the data
componentname describes the content of the zip file
File Description File Name (.zip***) Format
Region 12 , Version 01_02, Catchment Grid NHDPlus12V01_02_Catgrid ESRI Grid*
Region 12, Version 01_02, Catchment Shapefile NHDPlus12V01_02_Catshape Shapefile**
Region 12, Version 01_03, Catchment Flowline Attributes NHDPlus12V01_03_Cat_Flowline_Attr DBF****
Region 12, Version 01_01, Elevation Unit a NHDPlus12V01_01_Elev_Unit_a ESRI Grid
Region 12, Version 01_01, Elevation Unit b NHDPlus12V01_01_Elev_Unit_b ESRI Grid
Region 12, Version 01_01, Elevation Unit c NHDPlus12V01_01_Elev_Unit_c ESRI Grid
Region 12, Version 01_01, Elevation Unit d NHDPlus12V01_01_Elev_Unit_d ESRI Grid
Region 12, Version 01_01, Elevation Unit e NHDPlus12V01_01_Elev_Unit_e ESRI Grid
Region 12, Version 01_01, Elevation Unit f NHDPlus12V01_01_Elev_Unit_f ESRI Grid
Region 12, Version 01_01, Flow Accumulation and Flow Direction Unit a NHDPlus12V01_01_FAC_FDR_Unit_a ESRI Grid
Region 12, Version 01_01, Flow Accumulation and Flow Direction Unit b NHDPlus12V01_01_FAC_FDR_Unit_b ESRI Grid
Region 12, Version 01_01, Flow Accumulation and Flow Direction Unit c NHDPlus12V01_01_FAC_FDR_Unit_c ESRI Grid
Region 12, Version 01_01, Flow Accumulation and Flow Direction Unit d NHDPlus12V01_01_FAC_FDR_Unit_d ESRI Grid
Region 12, Version 01_01, Flow Accumulation and Flow Direction Unit e NHDPlus12V01_01_FAC_FDR_Unit_e ESRI Grid
Region 12, Version 01_01, Flow Accumulation and Flow Direction Unit f NHDPlus12V01_01_FAC_FDR_Unit_f ESRI Grid
Region 12, Version 01_01, National Hydrography Dataset NHDPlus12V01_02_NHD Shapefile and DBF
Region 12, Version 01_01, QAQC & Sinks Spreadsheet NHDPlus12V01_01_QAQC_Sinks Excel Spreadsheet
Region 12, Version 01_01, Stream Gage Event NHDPlus12V01_01_StreamGageEvent DBF

*An ESRI Grid is a proprietary format for a raster dataset that defines space as an array of equally sized cells arranged in rows and columns.  Each cell contains an attribute value and location coordinates. Unlike a vector structure, which stores coordinates explicitly, raster coordinates are contained in the ordering of the matrix. Groups of cells that share the same value represent the same type of geographic feature.

**A Shapefile is a published, but proprietary, data format from the Environmental Systems Research Institute, Inc. (ESRI).

***Zip is a common type of file compression.

****DBF