Question

what is the difference between surface water resource and groundwater resource. state two advantages of each

Answer 1

Surface water is water on the surface of the planet such as in a river, lake, wetland, or ocean. It can be contrasted with groundwater and atmospheric water.
Surface and groundwater are two separate entities, so they must be regarded as such. However, there is an ever-increasing need for management of the two as they are part of an interrelated system that is paramount when the demand for water exceeds the available supply 
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Answer 2

Surface water is just what the name implies; it is water found in a river, lake or other surface cavity. This water is usually not very high in mineral content, and is often called “soft water” even though it is probably not. Surface water is exposed to many different contaminants, such as animal wastes, pesticides, insecticides, industrial wastes.

Advantages of surface water:-
1. Easy to abstract water by direct pumping
2. Water can be treated after use and put back into a river
3. Dams and reservoirs can be used for hydroelectric power
4. Reservoirs can be used for recreation

Groundwater is water contained in or by a subsurface layer of soil or rock. There are many sources recharging the supply of groundwater, including rain that soaks into the ground, rivers that disappear underground and melting snow. Because of the many sources of recharge, groundwater may contain any or all of the contaminants found in surface water as well as the dissolved minerals it picks up underground.

Advantages of ground water :-
1. Rocks act as a natural filter
2. No loss of water through evaporation
3. No requirement for expensive and environmentally damaging dams
4. Pumping costs low

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