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Water table · Bihar

Water table depth in Nalanda

2.5 m to 11.8 mbelow ground (8 to 39 ft), pre-monsoon 2018

Most of the 31 wells the Central Ground Water Board measured in Nalanda read 5–10 m. None was deeper than 20 m.

How deep the water is in Nalanda's wells

Monitoring wells in each depth band, measured before the 2018 monsoon, when the water table is at its lowest.

  1. 0–2 m0% of wells0
  2. 2–5 m48% of wells15
  3. 5–10 m42% of wells13
  4. 10–20 m10% of wells3
  5. 20–40 m0% of wells0
  6. over 40 m0% of wells0

Is groundwater in Nalanda running out?

76%Semi-critical

Nalanda pumps out 76% of the groundwater that can safely be taken out each year (2025, Central Ground Water Board). Groundwater is under pressure. 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 Nalanda?

In CGWB's pre-monsoon 2018 readings, groundwater in Nalanda stood 2.5 m to 11.8 m below ground (8 to 39 ft) across 31 monitoring wells. Most of them read 5–10 m.

How deep is a borewell in Nalanda?

A borewell has to reach well below the water level, and in summer the level drops further, so in Nalanda it has to go past 11.8 m (39 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 Nalanda?

Nalanda pumps out 76% of the groundwater that can safely be taken out each year (2025), rated semi-critical. At this rate of pumping the level is under pressure and falls in dry years. That is 7 points higher than in 2017.

How deep should a rainwater recharge bore be in Nalanda?

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.

Water table in other districts of Bihar