The document summarizes India's Coastal Regulation Zone (CRZ), which aims to regulate development activities within 500 meters of the coastline or 100 meters of tidal water bodies to protect coastal ecosystems and limit environmental degradation. The CRZ is divided into four categories - CRZ-I covers ecologically sensitive areas, CRZ-II includes developed areas, CRZ-III covers relatively undisturbed areas, and CRZ-IV applies to coastal waters. The CRZ regulations prohibit or restrict construction and other activities in these zones to conserve coastal stretches and ensure sustainable development and livelihoods while accounting for natural hazards.

1. COASTAL REGULATION
ZONE AND ITS RELAVANCE
ARCHANA .T & VISHNUPRABHA . P

2. INTRODUCTION
 Coastal regulation zone is the boundary from the high tide line up to 500m in
the land -ward side.
 Area between the low and high tide line.
 In the case of rivers, creeks and backwaters, the distance from the high tide
level shall apply to both sides and this distance shall not be less than 100
meters or the width of the creek, river or backwater whichever is less.
 This has been done after considering the need for protecting the coastal areas
and beaches from environmental degradation.
 Prohibition of developmental activities of any kind has caused considerable
problems to State Governments as there are existing developed areas within
the stretch of 500 M.
 Keeping this in view and ensuring that the use and activities in the coastal
areas are consistent with principles and requirements of environment
conservation, the Government of India has proposed Coastal Regulations
Zone and to impose restrictions on developmental activities.

3.  These regulations among other things permit developments in the area
already developed/partly developed with certain restrictions and subject
to land use and other regulations framed under the Town & Country
Planning Act prevailing in the State.
 HIGH TIDE LINE (HTL) : means the line on the land up to which the
highest water line reaches during the spring tide.
 LOW TIDE LINE (LTL) : The lowest level of water on the shore.
 SEASHORE: An area of sandy, stony, or rocky land bordering and level
with the sea. Area between HTL and LTL.

4. AREAS UNDER COASTAL
REGULATION ZONE
 The land area from high tide line (HTL) to 500mts on landward side
along the sea front.
 CRZ shall apply to the land between the HTL to 100mts or width of the
tidal influenced water bodies that are connected to the sea(whichever is
lesser).
 The land area falling between the hazard line and 500mts from HTL –
landward side in case of seafront
 The land area falling between the hazard line and 100 mts in case of tidal
influenced water body

5.  The distance up to which development along tidal influenced water bodies is to
be regulated shall be governed by the distance up to which the tidal effects are
experienced which shall be determined based on the salinity concentration
 For lakes, minimum of 30 m buffer to be kept.
CO NS TRUCTIO N METHO DS IN CO AS TAL REGULATIO N
ZO NE
 The construction in coastal region should preferably be
done on stilts so as to prevent the house from high and
low tides, which can lead to destruction.
 Raising the houses on stilts not only prevent the tides
but also helps in proper ventilation inside the house.
 The diagram shows the difference between an
unelevated and an elevated house.
 The construction on sand is practically impossible as the
sand recedes along with the water during high tides.
 Foundation and Stilts are the most important step in
construction. With stronger foundation and stilts the
destruction to the house can be minimal

6. CATEGORIES OF COASTAL REGUL ATION
ZONE
CRZ 1
 The areas that are ecologically sensitive and the geomorphological
features which play a role in the maintaining the integrity of the coast,
 Mangroves, in case mangrove area is more than 1000 sq. mts, a buffer
of 50meters
 Corals and coral reefs and associated biodiversity;
 Sand Dunes;
 Mudflats which are biologically active;
 National parks, marine parks, sanctuaries, reserve forests, wildlife
habitats and other along the mangroves shall be provided; protected
areas under the provisions of Wild Life (Protection) Act, 1972 (53 of
1972), the Forest (Conservation) Act, 1980 (69 of 1980) or Environment
(Protection) Act, 1986 (29 of 1986); including sites.

7.  Biosphere Reserves; Coral
 Salt Marshes;
 Turtle nesting grounds;
 Horse shoe crabs habitats;
 Sea grass beds;
 Nesting grounds of birds;
 Areas or structures of archaeological importance and heritage
 The area between Low Tide Line and High Tide Line

8. CRZ II
 The areas that have been developed upto or close to the shoreline.
 Developed area: area within the existing municipal limits or in other existing
legally designated urban areas which are substantially built-up and has
provided with drainage and approach roads and other infrastructural
such as water supply and sewerage mains
CRZ III
 Areas that are relatively undisturbed
(Buildings are only permitted on the landward side if there is an existing road
close proximity to the coastal line.)

9. CRZ IV
 The water area from the Low Tide Line to twelve nautical miles on the
seaward side;
 Shall include 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
To ensure livelihood security to the fishing communities and other local
communities living in the coastal areas;
To conserve and protect coastal stretches;
To promote development in a sustainable manner based on scientific
principles, taking into account the dangers of natural hazards in the coastal
areas and sea level rise due to global warming.
To stop the indiscriminate shrimp farming.
Conserving and protecting the coastal areas and marine waters
RELAVANCE

10. THANK YOU