Introduce a possible Biratnagar study, the environmental questions it could investigate, and the evidence and local verification needed before reporting findings. This is a proposal, not a completed assessment.
Start with questions, not a map
What could a place-based environmental study help people in Biratnagar understand? It might examine how urban growth relates to drainage, where heat or reduced green cover should be investigated, or what information is missing from current plans. These are possible research questions, not findings about the city.
GeoSutra is considering a Biratnagar demonstration to explore how environmental evidence could be brought together for local decisions. No validated assessment or field study has been completed for this proposal. The first work would be to agree on the questions and find out whether available sources can answer them.
Choose a useful scale
Biratnagar Metropolitan City is one possible study boundary, but it may not capture every connected system that matters. Drainage and flood questions, for example, may require looking beyond municipal limits to relevant upstream and downstream areas. The boundary should follow the question and the evidence, not simply the shape easiest to map.
Different questions also need different levels of detail. A citywide view might help identify broad patterns. It cannot automatically tell a ward, household, or site what is happening there. Any finer claim would need data and verification at that scale.
Start with records that already exist
Biratnagar Metropolitan City’s Revised Sanitation Plan, published in 2021, discusses planning areas that include drainage, wastewater, and solid waste.[1] It could help identify issues the municipality has already documented and questions that deserve follow-up. Because it is a dated plan, it should not be treated as a description of current conditions without checking for newer information.
The National Statistics Office’s 2021 census results portal could provide demographic context, depending on which tables and geographic units fit the study.[2] Before comparing records over time, researchers would need to check definitions and whether administrative boundaries align.
Use satellite data for questions it can support
Landsat surface-reflectance products are one possible source for examining broad land-cover patterns over time. USGS describes them as globally available at 30-metre resolution, with records from different instruments covering different date ranges.[3] That scale may help with some citywide comparisons. It cannot resolve household-level conditions or every drainage feature.
Image dates, cloud cover, processing, and quality flags would also need review. USGS documents known issues in some Collection 2 conditions, including around clouds and bright snow or ice.[4] A satellite signal can suggest where to investigate; it does not by itself explain why a place changed or what residents experience there.
Bring local evidence into the interpretation
Public records and imagery cannot answer every question. People who live and work in Biratnagar may identify locations, seasonal patterns, or service concerns that are not visible in a dataset. Field observations could help check selected interpretations if the study is agreed, access and permissions are in place, and the methods fit the question.
That work has not happened as part of this proposal. Any community knowledge or personal information would need to be collected and handled with appropriate consent and safeguards.
Keep the proposal distinct from a result
A first-stage Biratnagar study could produce a documented set of questions, a source inventory, and a plan for verification. If the evidence supports it, a later phase could make maps or compare specific conditions. The appropriate output and scope would depend on source quality, local priorities, permissions, and available resources.
This article reports no numerical findings, field observations, risk rankings, or recommendations for the city. It describes a possible study and the checks needed before one could make those claims. Residents, researchers, and local institutions can help identify which questions would be most useful to examine.
Sources & references
- Biratnagar Metropolitan City: Revised Sanitation Plan (2021) (accessed 2026-10-24)
- National Statistics Office Nepal: National Population and Housing Census 2021 results (accessed 2026-10-24)
- U.S. Geological Survey: Landsat Surface Reflectance (accessed 2026-10-24)
- U.S. Geological Survey: Landsat Collection 2 Known Issues (accessed 2026-10-24)
GeoSutra · geosutra.com/insights