grav - gryk
- gravel
- gravimetric moisture content
- gravitational head
- gravitational water
- gravity component
- gravity drainage
- gravity spring
- grid north
- grike
- grotto
- ground air
- ground slope
- ground water
- ground water, confined
- ground water, perched
- ground water, unconfined
- ground-water artery
- ground-water barrier
- ground-water basin
- ground-water cascade
- ground-water cement
- ground-water dam
- ground-water discharge
- ground-water divide
- ground-water flow
- ground-water flux
- ground-water inventory
- ground-water mound
- ground-water pumping
- ground-water recharge
- ground-water reservoir
- ground-water system
- ground-water table
- ground-water travel time
- grout
- grout curtain
