GIS Applications in Nepal: Cadastral Survey, NSDI & Disaster Management
Idea in plain words
Historical Evolution in Nepal: National Remote Sensing Center (1981), Survey Department topographic base mapping (1:25,000 & 1:50,000 scale), and ICIMOD regional applications.
Exam tip
High-yield exam topic (High).
Explanation
Nepal presents unique geospatial challenges due to extreme topography, spanning from 60 meters elevation in the southern Terai plains to 8,848 meters at Mt. Everest. The Survey Department serves as the national mapping authority, managing the geodetic network, aerial photogrammetry, and cadastral parcel databases. GIS plays a vital life-safety role in Nepal: mapping fault lines, identifying vulnerable settlements exposed to GLOF hazards in high mountain valleys, and coordinating search-and-rescue logistics during seasonal monsoon flooding.
Key points
- National Spatial Data Infrastructure (NSDI) Nepal: Lead agency Survey Department coordinating the national clearinghouse and standardized base data.
- Cadastral Mapping: Modernization from traditional brass-plate and plane table mapping to digital parcel databases in land revenue offices (Malpot).
- Disaster Risk Reduction (DRR) in Nepal: Flood inundation modeling in the Terai, landslide hazard zonation in the Middle Hills, and Glacial Lake Outburst Flood (GLOF) monitoring in the Himalayas.
- Municipal GIS: Urban planning, house numbering, property tax mapping, and municipal infrastructure asset management.
Example
Example
The BIPAD disaster portal (bipadportal.gov.np) developed under the Ministry of Home Affairs, integrating real-time weather alerts with demographic census layers for disaster response.
Code examples
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Key GIS Institutions and Systems in Nepal:
Organization | Primary Geospatial Role
Survey Department (NAPI) | Geodetic control, topographic base maps, NSDI clearinghouse
Dept of Land Mgmt (DOLMA) | Digital Cadastral Information System, Land records
ICIMOD | Regional cryosphere, mountain ecology, GLOF monitoring
NDRRMA / BIPAD Portal | National disaster information management system
Municipalities | Urban GIS, property taxation, utility planning
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Exam questions
- [8 Marks] Discuss the history and current status of GIS and National Spatial Data Infrastructure (NSDI) in Nepal. Detail the role of the Survey Department.
- [6 Marks] Explain how GIS is applied in Nepal for disaster management, focusing on landslide hazard zonation and flood emergency logistics.