High resolution 6-inch, 9-inch, and 12-inch aerial imagery are now available from TNRIS for the South Texas region, including the Lower Rio Grande Valley. Eleven local entities and one federal agency contributed funds to collect the new imagery.
The 2013 South TX Orthoimagery products are in the public domain and available from TNRIS's Research and Distribution Center (RDC) at a nominal fee for the cost of reproduction.
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Surdex Corp. was selected under the High Priority Imagery and Data Sets (HPIDS) State contract as the data provider. The TNRIS Strategic Mapping Program (StratMap) administered the project providing coordination and project management services. TNRIS also performed data QC of the interim and final orthoimage products.
The orthoimagery are used for city planning, road construction projects, utilities mapping, emergency response, 911 addressing, hydrography, transportation planning, among many other applications.
The orthoimagery were acquired between December 2012 and February 2013 during leaf-off conditions. Leaf-off imagery allows the user to see more on-the-ground features underneath deciduous tree cover. Also, it is much easier to distinguish deciduous vs. evergreen vegetation with imagery acquired during the leaf-off period.
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