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

1-3
C. SUMMARY AND CONCLUSIONS
The pertinent results of the Co-Location Studies for Cameron and Hidalgo Counties are presented on the
enclosed Figures 1 and 2, respectively; these being compilations of the various overlays.
1. The occurrences of brackish groundwaters at shallow depths are extensive enough so that
choices of locations will not be unduly constrained
2. Preliminary screening of the GP/GT Resource occurrences has revealed that area A in
the Rodgers Map, already extensively studied in the previous USDOE investigation
referred to above, should not require further study. Area D of the Rodgers Map is also
shown to be less desirable from the standpoint of both the extractable heat energy and the
water quality. Thus, it is concluded that Areas B and C of the Rodgers Map are those
that clearly merit further study in the Resource Assessment portion of this investigation
and will be those on which we will concentrate henceforth
3. A sufficiency of population densities appears to overlie - or be in close proximity to -
both shallow groundwater and deep GP/GT sources to enable promising utilization of
these resources in the future.