Water table depth in Dumka
Most of the 25 wells the Central Ground Water Board measured in Dumka read 5–10 m. None was deeper than 20 m.
How deep the water is in Dumka's wells
Monitoring wells in each depth band, measured before the 2018 monsoon, when the water table is at its lowest.
- 0–2 m4% of wells1
- 2–5 m12% of wells3
- 5–10 m80% of wells20
- 10–20 m4% of wells1
- 20–40 m0% of wells0
- over 40 m0% of wells0
Is groundwater in Dumka running out?
Dumka pumps out 21% of the groundwater that can safely be taken out each year (2025, Central Ground Water Board). Pumping is within safe limits. Recharging rain from roofs and open ground is the way to lift the water table back up.
Frequently asked questions
What is the water table depth in Dumka?
In CGWB's pre-monsoon 2018 readings, groundwater in Dumka stood 2 m to 10.6 m below ground (6 to 35 ft) across 25 monitoring wells. Most of them read 5–10 m.
How deep is a borewell in Dumka?
A borewell has to reach well below the water level, and in summer the level drops further, so in Dumka it has to go past 10.6 m (35 ft) where wells read deepest. The exact depth depends on where the water-bearing rock or sand layer is, which a local hydrogeologist or driller can tell from nearby bores.
Is the water table falling in Dumka?
Dumka pumps out 21% of the groundwater that can safely be taken out each year (2025), rated safe. Pumping is within what rain puts back, so the level is broadly holding. That is 3 points lower than in 2017.
How deep should a rainwater recharge bore be in Dumka?
About 60 ft is typical where most wells read 5–10 m, deep enough to pass the clay layers that block water and reach sand or fractured rock that carries it down to the water table. The final depth is set on site from the soil seen while drilling.
Source: District-wise Depth to Water Level and Distribution of Percentage of Wells for the Period of Premonsoon, 2018 (one PDF per State/UT), Central Ground Water Board. Levels vary between neighbourhoods and fall further in a dry year, so a reading near you can differ.