Question

write short note on sustainable management and water harvesting and dams​

Answer 1

HERE IS UR ANSWER DEAR,

sustainable development :

Sustainable development is the idea that human societies must live and meet their needs without compromising the ability of future generations to meet their own needs. The “official” definition of sustainable development was developed for the first time in the Brundtland Report in 1987.

Specifically, sustainable development is a way of organizing society so that it can exist in the long term. This means taking into account both the imperatives present and those of the future, such as the preservation of the environment and natural resources or social and economic equity.

water harvesting

It means capturing rain where it falls or capturing the run off in your own village or town. And taking measures to keep that water clean by not allowing polluting activities to take place in the catchment.

Therefore, water harvesting can be undertaken through a variety of ways

1. Capturing runoff from rooftops
2. Capturing runoff from local catchments
3. Capturing seasonal floodwaters from local streams
4. Conserving water through watershed management

These techniques can serve the following the following purposes:

• Provide drinking water
• Provide irrigation water
• Increase groundwater recharge
• Reduce stormwater discharges, urban floods and overloading of sewage treatment plants
• Reduce seawater ingress in coastal areas.

In general, water harvesting is the activity of direct collection of rainwater. The rainwater collected can be stored for direct use or can be recharged into the groundwater. Rain is the first form of water that we know in the hydrological cycle, hence is a primary source of water for us. Rivers, lakes and groundwater are all secondary sources of water. In present times, we depend entirely on such secondary sources of water. In the process, it is forgotten that rain is the ultimate source that feeds all these secondary sources and remain ignorant of its value. Water harvesting means to understand the value of rain, and to make optimum use of the rainwater at the place where it falls.

Answer 2

Answer:

It actually aims at developing 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. Growing more trees in watershed areas, increasing the retention of more rain water and protection of soil from erosion..

I HOPE IT HELP YOU...