Varuna — Water Intelligence Engine

National Groundwater Overview

Interactive map of all 13,506 Central Ground Water Board (CGWB 2022) wells across India. Geography tab shows a state-level choropleth coloured by WQI risk, data quality (CBE pass rate), or dominant contaminant. Quality tab shows every well as an individual dot coloured by the number of BIS drinking-water standards exceeded — hover any dot for EC, pH, TDS, fluoride, nitrate, chloride, and charge-balance audit status.

India Groundwater Audit

State-level charge balance error (CBE) audit. Detects pre-filtered datasets (Rajasthan, J&K: 100% pass rate is statistically implausible at this sample size), systematic bias (Kerala: cation excess → likely missing silica), and physical violations (Gujarat: ion mass exceeds total dissolved solids in some samples).

Dholera AOI — Coastal Salinity Risk

Area-of-Interest intelligence for the Dholera Special Investment Region (SIR), Gujarat. Coastal salinity risk scored as: 0.50 × distance-to-coast + 0.35 × EC + 0.15 × Cl/TH ratio. Forecast-uncertainty-driven sampling plan: 3 transects perpendicular to the Gulf of Khambhat, 4 stations each at 2/5/10/20 km inland. DEM + Natural Earth land-mask validity filter ensures no sampling points are placed in water bodies.

River Floodplain Analysis

Floodplain risk mapping and inundation zone intelligence.

Data & Methodology

• Source: CGWB 2022 Ground Water Quality of Unconfined Aquifers
• CBE threshold: |CBE| ≤ 5% (Hounslow, 1995)
• Risk formula: rule-based, no ML — fully auditable weights
• Sampling plan: IDW → advection-diffusion simulation → greedy uncertainty maximisation
• Validity filter: DEM ≥ 1 m above MSL AND centroid ∈ Natural Earth land polygon

GoatAI · goatai.io · business@goatai.io