Coastal Regulation Zone (CRZ) area includes the land area from High Tide Line (HTL) to 500 m on the landward side along the sea front, in case of tidal influence waterbodies, the land area between HTL to 100 m or width of the creek, water bodies etc. whichever is less. As per this notification, the coastal areas have been classified into five zones as follows
A. The areas that are ecologically sensitive
Mangroves / Corals and coral reefs and associated biodiversity / Sand Dunes / Mud flats/ National parks, marine parks, sanctuaries, reserve forests, wildlife habitats including Biosphere Reserves / Salt Marshes / Turtle nesting grounds / Horse shoe crabs habitats / Sea grass beds / Nesting grounds of birds / Areas or structures of archaeological importance and heritage sites, etc.,
B. The area between Low Tide Line and High Tide Line (inter tidal zone)
CRZ-IA
I. No New Construction shall be permitted in CRZ – I except
II. Areas between LTL and HTL which are not ecologically sensitive, necessary safety measures will be incorporated while permitting the following namely
The areas that have been developed upto or close to the shoreline.
Explanation - (For the purposes of the) expression “developed area” is referred as the area within the existing municipal limits or in other existing legally designated urban areas which are substantially built-up and has been provided with drainage and approach roads and other infrastructural facilities, such as water supply and sewerage mains
CRZ-II
Areas that are relatively undisturbed and those do not belong to either CRZ-I or II which include coastal zone in the rural areas (developed and undeveloped) and also areas within municipal limits or in other legally designated urban areas, which are not substantially built up.
3A. Area upto 200mts from HTL on the landward side in case of seafront and 100mts along tidal influenced water bodies or width of the creek whichever is less to be earmarked as “No Development Zone (NDZ)”
3B. Area between 200mts to 500mts
CRZ – III, III-A, III-B
Regulation of activities for CRZ-III areas beyond NDZ
A.The water area from the Low Tide Line to twelve nautical miles on the seaward side
B.The water area of the tidal influenced water body from the mouth of the water body at the sea upto the influence of tide which is measured as five parts per thousand during the driest season of the year.
CRZ-IV
The activities on the sea and tidal influenced water bodies will be regulated except for traditional fishing and related activities undertaken by local communities as follows.
Areas requiring special consideration for the purpose of protecting the critical coastal environment and difficulties faced by local communities and the Critically Vulnerable Coastal Areas (CVCA) such as Sunderbans region of West Bengal and other ecologically sensitive areas identified as under Environment (Protection) Act, 1986 and managed with the involvement of coastal communities including fisherfolk.