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Free toolDo you need groundwater modelling for your NOC?
Based on para 8 of the CGWA guidelines as amended on 29.03.2023. Answer five questions to see which study your project needs.
The rule behind the tool
Criteria for groundwater modelling
Para 8, amendment to the CGWA guidelines notified on 29.03.2023. Projects above these limits must submit an Impact Assessment Report and a groundwater modelling study covering a 5 km radius around the site, prepared by an accredited consultant.
| Project | Assessment unit | Area type | Withdrawal (m³/day) | Modelling |
|---|---|---|---|---|
| Industry | Over-exploited, critical, semi-critical | Hard rock / non-alluvium | >100 to 500 | Analytical (SOP Section F) |
| Alluvium | >100 to 1,000 | Analytical (SOP Section F) | ||
| Hard rock / non-alluvium | >500 | Numerical | ||
| Alluvium | >1,000 | Numerical | ||
| Safe | Hard rock / non-alluvium | >500 | Numerical | |
| Alluvium | >2,000 | Numerical | ||
| Mining | All | All | Seepage >500 | Numerical |
| Infrastructure | All | All | Any dewatering | Numerical, irrespective of quantum |