Basically, KGRAs fall into two categories: (1) areas of obvious geothermal activity such as hot springs designated by the U.S. Geological Survey (USGS); and (2) areas where applications to lease overlap to such a degree as to indicate strong geothermal potential. The latter are called competitive interest KGRAs.
KNOWN GEOTHERMAL RESOURCE AREAS (KGRA)
Meaning of KNOWN GEOTHERMAL RESOURCE AREAS (KGRA) in English
Environmental engineering English vocabulary. Английский словарь экологического инжиниринга. 2012