Page 3 - 2.Lesson Notes-Water Harvesting, Coal and Petroleum
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3.  Tanks and Nadis- Rajasthan
                   4.  Bandharas and Tals- Maharashtra
                   5.  Bundhis- Madhya Pradesh and Uttar Pradesh
                   6.  Ahars and Pynes- Bihar
                   7.  Ponds- Kandi belt of Jammu Region
                   8.  Eris (Tanks)- Tamil Nadu
                   9.  Surangams- Kerala
                   10. Kattas- Karnataka

               Check Dams:
                  The  crescent  shaped  earthen  embankments  or  low,  straight  concrete-and-
                    rubble “check dams” built across seasonally flooded gullies.
                  Monsoon rains fill ponds behind the structures.
                  Only the largest structures hold water year-round; most dry up six months or less
                    after the monsoons.
                  Their main purpose, however, is not to hold surface water but to recharge the
                    ground water beneath.
































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