Watershed puzzle Crossword

an area of land where the surface water and the groundwater drain into a particular body of water, separated from other watersheds by drainage divides
a geographical barrier, such as a ridge, hill, or mountain separating one watershed from another
water from precipitation that drains into a gully that flows into a river, lake, reservoir, estuary, wetland, or ocean
water that collects in cracks and pores in underground soil and rock layers
the top of the saturation zone, between which water fills all open spaces between the rock
the upper portion of soil and rock that can be temporarily filled with water as the water enters the ground but then moves deeper
below the water table where all spaces not filled with solid material fill with water
a layer of permeable rock that retains and filters water
allows water to flow through the material, the opposite of impermeable
sunken land surface due to underlying compression of earth material
the presence of introduction into the environment of a substance or thing that has harmful or poisonous effects. Many different types: air, water, and land.
a single identifiable and localized source of water pollution, such as wastewater discharge into a stream
pollutants introduced into surface or groundwater that are without a specific location source, such as water flowing over a lawn that has been fertilized and into a drain
the draining away of water or substances carried in it from the surface of an area of land, a building, or structure