(GP/GT) for Additional Water Supply in the Lower Rio Grande

REPORT ON
TASK NO. I: CO-LOCATION STUDIES
A. INTRODUCTION
The first task in our Work Statement is entitled: "Co-Location Studies" and seeks to establish a base of
information as to the locations within Cameron and Hidalgo Counties that constitute the best potentials
for tapping into each of the shallow, brackish groundwater occurrences and the deep GP/GT resource
occurrences, wherever they are found close to defined population centers in these two Counties. The
preliminary screening of Willacy County established that the underground resources did not appear to be
of significant magnitude, compared to those of the other counties in the study area.
The objective of this Task is to identify where both shallow waters and deep-water/energy sources occur
close to each other in relation to the surface, but obviously separated by varying depths below the
surface. In each such co-location, one would expect to maximize the lowest-cost approach to yield
significant quantities of treated, potable water once the efforts of this investigation are completed.
B.METHOD
In order to simultaneously examine the locations of
1. the GP/GT Fairways,
2. the productive zones of mildly/moderately brackish groundwater and
3. population centers,
transparent drawings illustrating the locations and characteristics of 1. and 2.above in relation to County
lines have been prepared for both Cameron and Hidalgo Counties. These drawings are then overlaid on
base maps which illustrate 3. above for both Counties. The sources of information used for each layer
are as follows: