APSAC Logo

Arunachal Pradesh Space Application Center

Department of Science & Technology

Government of Arunachal Pradesh

Azadi Ka Amrit Mahotsav Government Logo
Natural Resource Management Programme

National Wetland Inventory and Assessment (NWIA) - Phase

NWIA - Satellite-based Wetland Mapping at 1:25,000 Scale

1:25,000 Map Scale
IRS LISS-IV Satellite Data
SAC, ISRO Collaboration
MoEFCC Under Ministry

About the Project

National Wetland Inventory and Assessment (NWIA) project under the Satellite-based River Basin Hydrological Technique and Applications (SARITA) programme is taken up in collaboration with the Space Application Centre, ISRO, DoS, GoI under the aegis of Ministry of Environment, Forests and Climate Change, GoI.

Objective

The primary objective of NWIA is to create a comprehensive inventory of wetlands across India using advanced satellite remote sensing technology, enabling better conservation and management of these vital ecosystems for biodiversity and water resources.

Methodology

Under the project, various wetland classes are mapped using IRS LISS-IV data on 1:25K scale. The mapping involves visual interpretation combined with digital image processing techniques to accurately delineate wetland boundaries and classify them into various categories.

Wetland Classes Mapped

Lakes/Ponds

Natural freshwater bodies

Ox-bow Lakes

Crescent-shaped water bodies

Glacial Lakes

Pro/Supra-glacial lakes

High Altitude Lakes

Alpine and sub-alpine lakes

Fish Ponds

Aquaculture areas

Reservoirs

Man-made water storage

Tank/Ponds

Traditional water bodies

Waterlogged Areas

Saturated land areas

Collaborating Organizations

SAC, ISRO

Space Application Centre, Indian Space Research Organisation

DoS, GoI

Department of Space, Government of India

MoEFCC

Ministry of Environment, Forests and Climate Change, GoI

Technology & Approach

Key Features of the Study

High Resolution Data

IRS LISS-IV satellite imagery for accurate mapping

Multi-class Mapping

Classification of 8+ wetland categories

Large Scale Mapping

1:25,000 scale for detailed analysis

Ground Verification

Field validation for accuracy assessment

GIS Database

Comprehensive spatial database creation

Temporal Analysis

Multi-temporal change detection capability

Ecosystem Services

Why Wetlands Matter

Water Purification

Natural filtration systems that clean water

Flood Control

Act as natural sponges during heavy rains

Biodiversity

Habitat for diverse flora and fauna

Carbon Storage

Important carbon sinks for climate regulation

Groundwater Recharge

Replenish underground water sources

Livelihood Support

Support fishing and agriculture communities

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