JalDrishti: how much of Delhi does groundwater monitoring actually cover?

Telemetry stations from two datasets, cleaned and tiered. Click the map to check any location.

Read with care. Coverage is the share of Delhi within the chosen radius of a station. The radius is an assumption, not a measured range. Boundary is provisional (unverified source). Depths are medians in metres, probably depth below ground (unconfirmed). Station data covers different periods: 2024 to 2025 (original 9) and Jan to Oct 2026 (CGWB).

Map

Blue circles = within radius of a station. Grey = no monitoring data. Dashed ring = caution tier. Darker = deeper.

Coverage

Original 9 stations-

Expanded network-

Radius: 5 km Stations counted Show May 2022 water-quality samples Show 2026 monsoon response (water level change) Show 5 suggested new stations

Click anywhere on the map to look up the nearest station.

2026 seasonal context (not a causal test)

Top: monthly mean of daily maximum temperature (orange line) and rainfall (blue bars), NASA POWER gridded estimate at one point near central Delhi. Bottom: median across stations of each station's monthly depth anomaly (m, positive = deeper), shown only for months with at least 5 stations. Oct* covers 1 to 5 Oct for weather and to 7 Oct for groundwater. Heat, missing rain and pumping all occur in the same months, so this shows the seasonal pattern, not what caused it.