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Ponds and lakes · West Bengal

Ponds and lakes in Koch Bihar

20,733ponds, out of 21,881 water bodies

The 1st Census of Water Bodies counted 21,881 ponds, tanks, lakes and other water bodies in Koch Bihar district. 733 of them (3%) were not in use and 0 had been encroached upon. Koch Bihar has the 9th most ponds of the 21 districts in West Bengal the census counted.

Every water body the census counted in Koch Bihar

733 of 21,881 water bodies (3%) are not in use: dried up, silted, built over or polluted. Bringing them back is one of the cheapest ways to recharge groundwater.

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Source: 1st Census of Water Bodies (2018-19), via India-WRIS.

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  • Ponds20,733
  • Tanks990
  • Lakes61
  • Reservoirs61
  • Check dams and percolation tanks32
  • Others4

Source: 1st Census of Water Bodies, Ministry of Jal Shakti (counted in 2018-19, published 2023).

Why Koch Bihar's ponds matter for its groundwater

46%Safe

Koch Bihar pumps out 46% of the groundwater that can safely be taken out each year (2025, Central Ground Water Board), which the board rates safe. Working ponds are a large part of what keeps it there, by letting rain soak back into the ground.

Groundwater level in Koch Bihar

Bringing a pond in Koch Bihar back

Most ponds that are not in use can be revived. The work is the same in a village or a city sector:

Step 1

Survey

Map the pond's full original area, its inlets and its catchment, and record encroachments and sewage outfalls.

Step 2

Desilt

Dig out the silt that has sealed the bed, so water soaks into the ground again instead of evaporating.

Step 3

Reconnect

Clear and line the channels that bring rain in, with a silt trap before the pond; divert sewage away from it.

Step 4

Recharge

Add recharge shafts or wells in the bed where the soil is tight, so water reaches the aquifer faster.

Step 5

Protect

Fence or plant the banks, mark the boundary and hand upkeep to the panchayat or residents' body.

Talk to TerraSetu about a pondPond rejuvenation: cost and processOther ways to recharge

Frequently asked questions

How many ponds are there in Koch Bihar?

The 1st Census of Water Bodies (Ministry of Jal Shakti, counted in 2018-19, published 2023) counted 20,733 ponds in Koch Bihar district, out of 21,881 water bodies in all. That is the 9th most ponds of 21 districts in West Bengal counted by the census.

How many lakes are there in Koch Bihar?

The 1st Census of Water Bodies counted 61 lakes and 61 reservoirs in Koch Bihar district, along with 990 tanks.

How many water bodies in Koch Bihar are not in use?

733 of the 21,881 water bodies (3%) were not in use when counted: dried up, silted, cut off from their catchment, polluted or built over. 0 had been encroached upon.

How do ponds help groundwater in Koch Bihar?

A working pond holds rain long enough for it to soak into the ground and refill wells and borewells nearby. A silted or encroached pond sends that rain down the drain instead. Desilting, reopening inlets and adding recharge shafts in the pond bed are among the cheapest ways to recharge groundwater.

Is groundwater in Koch Bihar running out?

In the 2025 Central Ground Water Board assessment, Koch Bihar district pumped out 46% of the groundwater that can safely be taken out each year ("safe").

Ponds in other districts of West Bengal

Districts ranked by number of ponds in the 1st Census of Water Bodies.

  1. 1Haora37,301 water bodies, 21% not in use36,861
  2. 2Paschim Medinipur35,467 water bodies, 10% not in use35,040
  3. 3Birbhum33,968 water bodies, 18% not in use33,692
  4. 4Purba Barddhaman33,181 water bodies, 10% not in use32,493
  5. 5Dakshin Dinajpur30,939 water bodies, 9% not in use30,549
  6. 6Hugli26,894 water bodies, 21% not in use26,590
  7. 7Purba Medinipur25,952 water bodies, 6% not in use24,145
  8. 8Bankura24,846 water bodies, 7% not in use23,746
  9. 9Puruliya20,867 water bodies, 10% not in use20,395
  10. 10Murshidabad18,674 water bodies, 13% not in use17,932
  11. 11Nadia13,874 water bodies, 19% not in use13,499
  12. 12Malda11,903 water bodies, 7% not in use11,669
  13. 13Uttar Dinajpur10,493 water bodies, 17% not in use10,147
  14. 14Jhargram3,529 water bodies, 11% not in use3,377
  15. 15Kolkatta3,051 water bodies, 30% not in use2,718
  16. 16Paschim Barddhaman1,670 water bodies, 12% not in use1,658
  17. 17Alipurduar1,348 water bodies, 5% not in use1,341
  18. 18Jalpaiguri1,377 water bodies, 21% not in use1,330
  19. 19Darjiling569 water bodies, 21% not in use535
  20. 20Kalimpong49 water bodies, 12% not in use42

All ponds and lakes in West Bengal