WATER RIGHTS ADJUDICATION
of groundwater resources for Indian tribes in the
west revolves around Winters Doctrine rights and the
McCarran Amendment, which established Practical Irrigable
Acreage (PIA) as the yardstick to quantify water rights.
PIA claims are a complex interrelationship among economic,
hydrogeologic, market, agricultural, and soil scientists
to jointly develop appropriately scaled and economically
viable irrication projects. Hydro Geo Chem, Inc.
has extensive experiece in providing expert services
to resolve water rights disputes.
Resources Assessment and Water Rights Adjudication
Navajo Nation, Arizona
Geo Chem was retained to conduct several groundwater
resource assessments and impact studies within the
complex Little Colorado River Basin of Arizona, a
27,000 square mile watershed (extended
of Quantified Water Rights
Mescalero Apache Reservation, New Mexico
Geo Chem performed a hydrologic evaluation of
a proposed wellfield on the Mescalero Apache Indian
Reservation, a source area for the Roswell Groundwater