San Antonio River Authority 2015/2016 Aerial Imagery Now Available

High resolution 6-inch/12-inch aerial imagery are now available from TNRIS for two areas of interest commissioned by the San Antonio River Authority:

  • Wilson, Karnes and Goliad Counties at 6-inch resolution
  • Refugio and Aransas Counties at 12-inch resolution

The San Antonio River Authority contributed funds to collect the new imagery as part of the 2015 Statewide Orthoimagery Project BUY-UP option to increase pixel resolution beyond 0.5-meter.

Surdex Corp. was selected under the legacy High Priority Imagery and Data Sets (HPIDS) state contract as the orthoimagery data provider. The TNRIS Strategic Mapping Program (StratMap) administered the project providing coordination and project management services. TNRIS also performed QA/QC for the project which included inspection of interim and final orthoimagery products.

The new orthoimagery are used by the San Antonio River Authority for engineering, general mapping, and other applications.

The new orthoimagery were acquired March 23-28, 2015 over Wilson, Karnes and Goliad Counties, and January 28-29, 2016 over Refugio and Aransas Counties during leaf-off conditions.

Data Access

The orthoimagery files (GeoTIFF, JPEG2000) are in the public domain. The JPEG2000s are available for direct download.

Browse, download, order, and inquire about data within the DataHub.

## Acquisition Areas View coverage areas in the interactive map below:


  • GeoTIFF and JPEG2000 DO4Q (~1 sq. mi.) image tiles
  • JPEG2000 compressed county mosaic
  • Tile index shp
  • Seamline shp
  • Metadata xmls per image tile

Product Specification

USGS Quarter Quad Breakdown

  • 6-inch pixel resolution for Wilson, Karnes and Goliad Counties
  • 12-inch pixel resolution for Refugio and Aransas Counties
  • 4-band, natural color and color infrared
  • StatePlane TX S Central 4204 NAD83 coordinate system
  • Units in feet
  • DO4Q (approx. 1 sq. mi.) image tiles, 1/64th USGS 7.5-minute quadrangle

Imagery Preview

Natural Color preview of Oil Gas Extraction Color infra red of Oil Gas Extraction
Oil/Gas Extraction 6in SCALE 1:576
Natural Color preview of oil gas overview Color Infrared preview of oil gas overview
Oil/Gas Extraction Overview 6in SCALE 1:70000
Natural Color preview of San Antonio River Color Infrared preview of San Antonio River
San Antonio River 6in SCALE 1:1300
Natural Color preview of San Antonio River Color Infrared preview of San Antonio River
San Antonio River 6in SCALE 1:700
Natural Color preview of Karnes City Color Infrared preview of Karnes City
Karnes City Football Field 6in SCALE 1:850
Natural Color preview of Calhoun County Color Infrared preview of Calhoun County
Docks along coast in Calhoun County 12in SCALE 1:3400
Natural Color preview of Refugio County Color Infrared preview of Refugio County
Oil/Gas Footprint in Refugio County 12in SCALE 1:10,000
Natural Color preview of Refugio, TX Color Infrared preview of Refugio, TX
Refugio, TX 12in SCALE 1:1400

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