RTI for Geological Survey of India: Mineral Surveys, Geological Maps & Hazard Reports

India's geological wealth — its coal seams, metal ore deposits, rare earth concentrations, and aquifer systems — is documented and studied by one of the world's oldest and largest geological surveys. The Geological Survey of India (GSI), established in 1851 and functioning under the Ministry of Mines, has systematically mapped the country's terrain, assessed its mineral resources, studied its earthquake hazard, and investigated its groundwater potential over more than 170 years. The data GSI holds — in published maps and memoirs, unpublished field reports, geochemical databases, and seismic hazard studies — is of enormous value to researchers, planners, communities, and citizens seeking to understand the land they live and depend on.

GSI is a public authority under Section 2(h) of the Right to Information Act, 2005. Its Central Public Information Officer (CPIO) is obligated to respond to RTI applications within 30 days under Section 7(1). Citizens, researchers, journalists, community groups, and state agencies can use the RTI Act to access GSI's mineral survey reports, geological maps, earthquake hazard data, groundwater potential surveys, and the status of field investigation programmes — information that is rarely proactively disclosed and is often decisive in land use decisions, disaster preparedness, and mineral governance.

This guide explains what GSI does, what data can be obtained through RTI, how to frame effective RTI applications, and what to do when information is denied or withheld.

What the Geological Survey of India Does and Holds

GSI's work spans several scientific domains, each generating records and data that may be accessible through RTI.

Geological Mapping and Mineral Exploration

GSI prepares geological maps at multiple scales — from regional 1:2,50,000 maps covering entire districts to detailed 1:25,000 maps of mineralised areas. These maps record the distribution of rock types, structural geology (faults, folds), and known mineral occurrences. Alongside the maps, GSI publishes Geological Survey of India Memoirs and Records — detailed scientific reports covering the geology and mineral resources of specific areas.

For mineral exploration, GSI conducts preliminary reconnaissance, detailed geological mapping, geochemical sampling, geophysical surveys, and sometimes exploratory drilling over areas identified as having mineral potential. These surveys generate exploration reports — some published, many unpublished — that contain resource estimates, grade data, and recommendations for further investigation or exploitation.

Earthquake Hazard Zonation and Seismic Microzonation

GSI is one of the primary agencies responsible for seismotectonic mapping and seismic microzonation of Indian cities. The Seismotectonic Atlas of India, which maps active fault systems and seismic zones, was prepared by GSI. Microzonation studies — which assess earthquake hazard at the neighbourhood level in vulnerable cities by mapping local soil conditions, site amplification, and peak ground acceleration — have been completed by GSI for several cities and are ongoing for others.

This data is critical for urban planning, building codes, disaster preparedness, and insurance risk assessment. Citizens, urban local bodies, architects, and engineers can access earthquake hazard data for their area through RTI.

Hydrogeological Surveys and Groundwater Potential Studies

GSI conducts hydrogeological mapping and groundwater potential surveys in areas where surface water is scarce and communities depend on groundwater. These surveys identify potential aquifer zones, recommend borewell locations, and estimate likely well yields. While the Central Ground Water Board (CGWB) under the Ministry of Jal Shakti is the primary national agency for groundwater resource assessment, GSI's hydrogeological work — particularly in hard rock terrains — often fills critical gaps, especially in rural and tribal areas.

Geochemical Mapping

Under the National Geochemical Mapping (NGCM) Programme, GSI systematically collects soil, stream sediment, and rock samples across the country and analyses them for a suite of elements — including heavy metals and potentially toxic elements such as arsenic, fluoride, lead, and mercury. This data has applications for mineral exploration, environmental baseline studies, and public health research.

Types of Information Accessible Through RTI with GSI

Citizens and researchers can seek several categories of information from GSI through RTI applications filed under Section 6 of the RTI Act.

Mineral Survey Reports and Resource Assessment Data

• District or block-level mineral survey reports: Reports covering a specific commodity (iron ore, coal, bauxite, rare earth elements, limestone, graphite) for a named district or block, including geological observations, geochemical and geophysical data, resource estimates, and exploration recommendations
• Status of mineral exploration programmes: Whether GSI has been commissioned by the Ministry of Mines or a State Government to conduct exploration in a particular area, the current stage of the programme, and whether a report has been submitted
• Geochemical sampling data: Raw or summarised geochemical data from NGCM surveys for a specific area — useful both for environmental baseline assessment and for understanding mineral potential

Geological Maps and Publications

• Published geological maps: Availability, pricing, and purchase process for geological map sheets covering a specific state or district at various scales
• Thematic maps: Hydrogeological maps, geophysical maps, seismotectonic maps for specific areas
• Out-of-print publications: Confirmation of whether GSI retains original data or scanned copies of maps and memoirs that are no longer in print

Earthquake Hazard and Seismic Microzonation Data

• Seismic zone classification for a specific city or district as per GSI's seismotectonic mapping
• Microzonation reports: Copies of seismic microzonation studies prepared by GSI for specific cities, including peak ground acceleration maps, site classification data, and liquefaction potential assessments
• Active fault data: Whether any known active fault passes within or near a specific area, as mapped in the Seismotectonic Atlas

Groundwater Potential Survey Reports

• Hydrogeological survey reports for specific districts or blocks, including recommended borewell sites and estimated yields
• Hydrogeological maps showing the distribution of aquifer types, depth to water table, and groundwater quality zones in hard rock areas

Field Investigation and Programme Records

• Details of field investigation camps conducted in a specific area in a given field season — the programme, objectives, team, and current status of the report
• Correspondence with State Governments about survey requests, exploration programme status, and report submissions

How to File an RTI Application with GSI

Identifying the Correct CPIO

GSI is a Central Government body under the Ministry of Mines. The CPIO for the organisation is located at GSI's headquarters at 27 Jawaharlal Nehru Road, Kolkata – 700 016. RTI applications can be filed online through rtionline.gov.in.

For information held specifically by a regional office — such as field investigation records from the GSI Southern Region (Hyderabad) or the GSI Northern Region (Lucknow) — you may address your application to the CPIO at the relevant regional headquarters. However, filing through rtionline.gov.in and selecting the Geological Survey of India as the public authority is the most straightforward approach; the CPIO will transfer the application to the appropriate regional office if needed.

Steps to File on the RTI Online Portal

1. Visit rtionline.gov.in and click Submit Request
2. Select Ministry of Mines as the Ministry
3. Select Geological Survey of India as the public authority
4. Describe your information request clearly — include the state, district, commodity, map sheet number, field season, or other specific identifiers that help GSI locate the relevant record
5. Pay ₹10 online. BPL cardholders are exempt from payment — upload a scanned copy of the BPL card
6. Submit and note your registration number for tracking

Tips for Drafting an Effective RTI Application

• Be specific about geography: Geological records are filed by district, block, map sheet number, or field season. Vague requests for "all mineral data for India" are unlikely to be fulfilled. Name the specific district, block, or area.
• Name the commodity: If you are seeking a mineral survey report, specify the commodity (e.g., iron ore, coal, lithium, rare earth elements) — this helps GSI identify the relevant division and record.
• Cite the programme: If you know the programme under which a survey was conducted (e.g., National Mineral Exploration Policy surveys, NMET-funded exploration, National Geochemical Mapping), mention it — this significantly narrows the search.
• Ask for certified copies when needed: If you need GSI documents for use in legal proceedings, environmental clearance processes, or regulatory applications, state explicitly that you require certified copies.
• Request the index first: If you are unsure what specific reports exist for an area, ask for a list or index of all reports, maps, and field investigation records pertaining to the district or block first. Then file a follow-up RTI for specific documents from that list.

What Happens When Information Is Denied

GSI may decline to release certain information, most commonly on the following grounds:

• Section 8(1)(d): Information including commercial confidence, trade secrets, or intellectual property, the disclosure of which would harm the competitive position of a third party — sometimes invoked for mineral survey reports prepared on behalf of State Governments
• Section 8(1)(a): Information that would prejudicially affect national security or strategic interests — occasionally applied to sub-surface geological data near sensitive areas
• Section 8(1)(j): Personal information that has no relationship to public activity — rarely applicable to GSI's scientific records

When an exemption is applied, the CPIO must identify the specific provision and explain the harm that disclosure would cause. A blanket refusal without specifying the exemption is not compliant with the RTI Act and should be challenged in First Appeal.

Appeals

First Appeal (Section 19(1)): If you receive no response within 30 days, or if the response is incomplete, incorrect, or unsatisfactorily partial, file a First Appeal with the First Appellate Authority (FAA) at GSI within 30 days of the date of decision or expiry of the 30-day response period, whichever is applicable. The FAA must decide within 30 days, extendable to 45 days with written reasons.

Second Appeal (Section 19(3)): If the FAA's order is also unsatisfactory or absent, file a Second Appeal with the Central Information Commission (CIC) within 90 days of the FAA's order or the expiry of the First Appeal period. GSI is a Central Government public authority under the Ministry of Mines — the second appeal goes to the CIC, not any State Information Commission.

Life and Liberty (Section 7(1) proviso): If the information sought relates to a matter involving life or personal liberty — for instance, seismic hazard data relevant to an imminent risk — the CPIO must respond within 48 hours rather than the standard 30 days.

Penalty (Section 20): The CIC may impose a penalty of ₹250 per day (up to ₹25,000) on the CPIO for failures to comply with the RTI Act, and may recommend disciplinary action. The penalty provision is an important tool when GSI delays responses without justification.