1. Piedras Negras, Mexico (AMS F401), 1:500000 Raster The University of Texas at Austin Public content Scale: 1:500000; Relief Symbology: contours, gradient and bathymetric tints; Other Descriptive Notes about Map Series: [U.S. Army Map Service. ...
2. Q3 flood data, Texas Polygon Princeton University Public content 1996. Federal Emergency Management Agency. Q3 flood data for Texas, 1996. The Q3 Flood Data are derived from the Flood Insurance Rate Maps (FIRMs) published by the Federal Emergency Manageme... Federal Emergency Management Agency.