What is meant by watershed management ? What are its advantages?

Watershed management emphasises scientific soil and water conservation in order to increase the biomass production.
(i) The main aim is to develop primary resources of land and water.
(ii) To produce secondary resources of plants and animals for use in a manner which will hot cause ecological imbalance.
(iii) 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.