describe the effect of excessive extraction of groundwater
Answers
Explanation:
The overall effect is a loss of riparian vegetation and wildlife habitat. Deterioration of water quality: One water-quality threat to fresh groundwater supplies is contamination from saltwater intrusion. Increased pumping costs: As the depth to water increases, the water must be lifted higher to reach the land surface.
Answer: Excessive pumping can lower the groundwater table, and cause wells to no longer be able to reach groundwater. As the water table lowers, the water must be pumped farther to reach the surface, using more energy. In extreme cases, using such a well can be cost prohibitive. Groundwater and surface water are connected.
Water in aquifers is brought to the surface naturally through a spring or can be discharged into lakes and streams. Groundwater can also be extracted through a well drilled into the aquifer. A well is a pipe in the ground that fills with groundwater. This water can be brought to the surface by a pump.
Some of the negative effects of groundwater depletion:
drying up of wells.
reduction of water in streams and lakes.
deterioration of water quality.
increased pumping costs.
land subsidence.