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.