Write a short note on watershed management.
Locate and name the water reservoirs in the below images. Which body has an advantage over the other water body and why? .[5 MARKS]
Figure (a)
Fig (b)
Write a short note on watershed management.
Locate and name the water reservoirs in the below images. Which body has an advantage over the other water body and why? .[5 MARKS]
Figure (a)
Fig (b)
Explanation: 2 Marks
Fig Identification and reasoning out: 3 Marks
Watershed management emphasizes scientific soil and water conservation in order to increase the biomass production. The aim is to develop primary resources of land and water, to produce secondary resources of plants and animals for use in a manner which will not cause ecological imbalance. Watershed management not only increases the production and income of the watershed community, but also mitigates droughts and floods and increases the life of the downstream dam and reservoirs.
The water reservoir in Fig (a) refers to that of an underground water body. Fig (b) refers to that of a dam.
Figure (a) has more advantage over figure (b) because water stored underground has the following merits.
1) There is no water loss through evaporation
2) The water spreads out to recharge wells
3) Provides moisture for vegetation over a large wide area
4) Not available for mosquitos and insects to breed on it
5) It remains insulated from contamination of human and animal wastes .
Explanation: 2 Marks
Fig Identification and reasoning out: 3 Marks
Watershed management emphasizes scientific soil and water conservation in order to increase the biomass production. The aim is to develop primary resources of land and water, to produce secondary resources of plants and animals for use in a manner which will not cause ecological imbalance. Watershed management not only increases the production and income of the watershed community, but also mitigates droughts and floods and increases the life of the downstream dam and reservoirs.
The water reservoir in Fig (a) refers to that of an underground water body. Fig (b) refers to that of a dam.
Figure (a) has more advantage over figure (b) because water stored underground has the following merits.
1) There is no water loss through evaporation
2) The water spreads out to recharge wells
3) Provides moisture for vegetation over a large wide area
4) Not available for mosquitos and insects to breed on it
5) It remains insulated from contamination of human and animal wastes .
