A resource capability unit is an environmental entity--land, water, area of active process, or biota--defined in terms of the nature, degree of activity, or use it can sustain without losing an acceptable level of environmental quality.

At 10 pm (CDT) on Friday, July 31, 1970, a tropical squall struck the western tip of Cuba causing property damage and the loss of 5 lives. Twelve hours later at 10 am (CDT), Saturday, August 1, the tropical depression had moved 150 miles northwest and had intensified into Tropical Storm Celia.

Two distinctive subaerial physiographic features that form a substantial portion, by area, of most barrier islands along the Texas coast are the washover fan and the tidal delta. Volumetrically, washover fan deposits and tidal delta deposits form a significant part of each barrier island.

This report is a compilation of all available data on mineral resources (exclusive of oil and gas) in 39 south Texas counties. Information from published and unpublished sources was checked and supplemented by field investigations.