downgradient

From down- +‎ gradient.

downgradient (comparative more downgradient, superlative most downgradient)

1. A position down along a gradient from a starting position.
2. (hydrology) a location that receives groundwater from another location; similar to downstream.

   Monitoring wells are installed downgradient of a contamination source to detect a contaminant plume.

• upgradient

downgradient (comparative more downgradient, superlative most downgradient)

1. The direction along a gradient.
2. (hydrology) a direction that groundwater flows toward.

• upgradient

• downtreading