The bottom of a shaft at which underground water gathers for pumping to the surface
a pit or a pool in which water collects In a cave, a sump may simply be a water-filled low place in an otherwise dry passageway, a small, temporary obstacle which provides an invigorating plunge or ear-dipper for wet-suit clad explorers Or it may indicate that the remainder of the cave beyond that point can only be explored by scuba-equipped cave divers The extent of the sump must be successfully determined before further exploration can continue
The cistern or reservoir made at the lowest point of a mine, from which is pumped the water which accumulates there
A built in basin containing a pump that continually removes groundwater from outside your basement’s walls and floor, discharging the water away from your house It prevents water from inundating your basement
An additional water reservoir, typically under a tank, to keep equipment out of sight or increase the amount of water in a system
The low area of water in an aquarium system The sump is the reservoir below the dry section of a wet-dry or trickle filter The water level in the sump varies with evaporation
A round pit of stone, lined with clay, for receiving the metal on its first fusion
An electric pump, usually installed in the basement to prevent water from entering the basement area It empties water from a "well or pit" where it is collected and pumps it to the outside of a home
A sump (depression) and pump assembly that receives groundwater infiltration flows collected by weeping tiles located around the foundations of buildings, and pumps the flows up onto the outside ground surface
A type of engine sump where oil that flows down from the crankshaft etc is sucked up into an external reservoir (as opposed to a wet sump where it simply pools in a pan at the bottom of the engine)