STS068-205-020 Houston, Texas, U.S.A. October 1994 Highways radiate outward from the central business district of Houston, which lies on the flat, coastal plain of southeast Texas. Dense woodlands, primarily north and east of the city, are shown as deep reds with color infrared film. Blue Lake Houston (actually muddy brown) is part of the San Jacinto River that eventually flows into the northwest corner of Galveston Bay. Visible east of the San Jacinto River and its floodplain are slightly elevated cultivated fields that separate the San Jacinto watershed from the much broader floodplain and delta of the Trinity River drainage basin (near the bottom left corner). Lighter areas show larger concentrations of commercial and industrial activities.