Mahanadi river along with fresh water mangrove tree.

Barringtonia acutangula is a species of Barringtonia native to coastal wetlands in southern Asia and northern Australasia, from Afghanistan east to the Philippines, Queensland and the Northern Territory. Common names include freshwater mangrove, itchytree and mango-pine. Wikipedia…

• Harvesting, Storing, and Treating Rainwater for Domestic Indoor Use
  Any domestic rainwater harvesting system you use to produce drinking water for your home will consist of the following six basic components. … 52 pages PDF guide
• A Beginner’s Guide to Harvesting Rainwater
  Learn about rainwater collection system and techniques for harvesting. Rainwater has been collected by nature in low lying areas since rainfall started and flowed down the terrain. Rainwater collection system… Read more: A Beginner’s Guide to Harvesting Rainwater
• Carbon Capture by Trees.
  Steel companies to conduct studies on Carbon Capture. Those having dedicated mines can go for afforestation with help of forest department.
• RO
  Reverse osmosis water purifiers are highly effective at reducing pesticides in water, typically removing 90–95%. Food minerals are healthier than water minerals.
• Alternative to rice stubble burning for growing winter wheat
  An alternative to rice stubble burning for growing winter wheat includes several sustainable practices that aim to reduce environmental pollution while maintaining or even enhancing soil health and crop yield.
• RainBarrel
  Rain barrels reduce this pollution by capturing and containing rainwater, decreasing the total amount of runoff water.