Zone | Watershed treatment/eco-development | ||
Prevention of soil erosion/water harvesting | Agro-forestry | Aqua culture/crz | |
I | Contour bunding, stream bank treatment, check dams on graded segment of stream, tidal regulator, masonry check dams, water spreading over paddy fields. | Canopy of coconut and beetle nut plantation, paddy field development, protection of mangrove forest & forestation of mangroves on deforested land wherever possible. | Aqua-culture development above strand line through small tanks and ponds, putting tidal regulator along stream, ban on drilling except for aqua culture with due precaution. |
II | Stream bank treatment for 3rd and 4th order streams, check dams across graded stretches, plantation to prevent gully erosion on stream originating in the zone, terracing & contour bunding on spurs. | Paddy cultivation on terraced land, canopy of orchids of jack fruits, pineapple, amla, and medicinal plants, grass. | Optimum depth of bore wells only up to 20 m datum line. |
III | Plantation to prevent gully erosion, terracing on minor spurs, stream bunds, check dams along graded stretches of streams.
| Canopy of medicinal- and spice plantation, orchids of mango, cashew, eugenia jambolana. Allow wild growth of karvanda/grass. | Optimum depth of bore wells only up to 20 m datum line. |
IV | Controlled blasting in the vicinity of springs, storage of water in depressions on plateau, check dams, quarrying. | Mango and cashewnut plantation/grass. Phreatophytic flora in the vicinity of springs. |
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