Lakes of Bendakaluru

Satellite view: Esri, Maxar, Earthstar Geographics

Jigani Kere

Also called Nanjapura Lake

See it on the map
Size
204 acresAbout 116 football pitches
Rank by size
24th largestOf 1,621 lakes that still exist
Valley
Dakshina Pinakini
Who looks after it
Nobody on record looks after it
Water quality
Fit only for wildlife and fishTested Jul 2026
Built over
2% of the lakeSatellite land cover, 2021

Through the years

Nothing on record for 1946 to 1954, 1956 to 1979 and 1981 to 1983.

The records listed below, drawn on one line from 1945 to 2026.

  1. 1945

    On the survey map

    See source

  2. 1955

    On the U.S. Army map

    Compiled from Survey of India maps of 1945-46

    See source

  3. 1980

    On the survey map

    See source

  4. 1984-2021

    Held water most years

    Water in 10% of all satellite passes, 1984-2024

    2% of its water area has since gone dry; 19% is new water

    4 years not counted: the satellite saw under half the lake

    Floating weed looks like dry land to this record, so a weed-covered year can read as dry

    See sourceSee source

  5. 2017-2018

    In the water bodies census, not marked as encroached

    This census's status marks are often wrong

    See source

  6. 2017-2025

    Mostly plants or weed in most years

    Floating weed shows as crops or grass here, not as water

    About three in four of these readings are right, so trust what holds for several years

    See source

  7. 2023-2026

    Tested by the state board in 36 months, most often fit only for wildlife and fish

    Jul 2023 to Jul 2026

    See every testSee source

  8. 2025-2026

    Mostly floating weed after the monsoon; part floating weed, part dry or built in the dry season

    After monsoon, Oct 2025 to Dec 2025

    • 27% open water
    • 66% floating weed
    • 8% dry or built

    Dry season, Mar 2026 to May 2026

    • 29% open water
    • 41% floating weed
    • 30% dry or built
    See source

How big it is

Drawn outline
204 acres

About 116 football pitches

See source
End to end
1.8 km

The longest straight line across the outline

See source

How clean the water is

Latest test
Fit only for wildlife and fish

Fit only for wildlife and fisheries. Class D on the state board’s scale from A, the cleanest, to E.

Tested Jul 2026

See source
Class each month, tested 36 times since Jul 2023
Fit only for wildlife and fish: 32 months. Fit only for irrigation: 4 months. Every month is listed in the readings below.
Drinkable after disinfection
Fit for bathing
Drinkable after treatment
Fit only for wildlife and fish
Fit only for irrigation
See source
Older tests
2 readings

From 2021

See source
Every reading
Show every reading

Latest test, Jul 2026. Too low to measure: boron, carbonate, nitrite, orthophosphate, phenolphthalein alkalinity, phosphate, kjeldahl nitrogen

MeasureUnitValue
Water temperature°C26
Dissolved oxygenmg/L5.4
pH6.9
ConductivityµS/cm1,348
BODmg/L7
Nitratemg/L as N5.2
Faecal coliformMPN/100mL63
Total coliformMPN/100mL540
Bicarbonatemg/L324
TurbidityNTU5.8
Total alkalinitymg/L as CaCO3324
Chloridemg/L296
CODmg/L76
Ammonia nitrogenmg/L as N0.4
Total hardnessmg/L as CaCO3316
Calcium hardnessmg/L as CaCO3160
Calciummg/L64
Magnesium hardnessmg/L as CaCO3156
Magnesiummg/L37.9
Sulphatemg/L35
Sodiummg/L141
Dissolved solidsmg/L930
Suspended solidsmg/L12
Potassiummg/L15
Fluoridemg/L0.49
Sodium share%48
Sodium adsorption ratio3.4

Every month the state board tested it

MonthClassDissolved oxygenmg/LBODmg/LFaecal coliformMPN/100mLTotal coliformMPN/100mLSource
Jul 2026D5.4763540See source
Jun 2026D5.56631,600See source
May 2026E1.5587009,200See source
Apr 2026D5.863904,300See source
Mar 2026D5.4894540See source
Feb 2026D5.672601,100See source
Jan 2026D4.612581,600See source
Dec 2025D584002,800See source
Nov 2025D5.962605,400See source
Oct 2025D5.464001,700See source
Sep 2025D5.282101,200See source
Aug 2025D4.982202,800See source
Jul 2025E312404,300See source
Jun 2025D5.583104,300See source
May 2025D642103,500See source
Apr 2025D5.953301,700See source
Mar 2025D4.582301,400See source
Feb 2025D6.254903,500See source
Jan 2025D5.75381,600See source
Dec 2024D6.47170630See source
Nov 2024D6.6626920See source
Oct 2024D6.27211,600See source
Sep 2024D642103,500See source
Aug 2024E2.7302105,400See source
Jul 2024D7.543109,200See source
Jun 2024D6.3122605,400See source
May 2024D5.843203,500See source
Apr 2024D4.6102601,700See source
Mar 2024D6.245803,500See source
Feb 2024E1.81823,00046,000See source
Jan 2024D5.453,3007,900See source
Dec 2023D4.884,80054,000See source
Oct 2023D6.164609,200See source
Sep 2023D5.2640016,000See source
Aug 2023D493309,200See source
Jul 2023D5.2432016,000See source

Older tests

DateWhereReadingWater temperature°CDissolved oxygenmg/LpHConductivityµS/cmBODmg/LNitrate and nitritemg/L as NFaecal coliformMPN/100mLTotal coliformMPN/100mLSource
2021Jigani Tnak, TankLowest234.86.5394212,70024,000See source
2021Jigani Tnak, TankHighest256.97.31,54320470,0009,20,000See source

How much is built over

Built inside the outline
2%

From satellite land cover, 2021

See source
Land within 500 m

31% crops, 27% built, 20% trees, 12% grass, 9% shrubs, 2% bare ground

From satellite land cover, 2021

See source

Who looks after it

Nobody on record looks after it.

Where its water comes from and goes

Valley
Dakshina Pinakini

The river basin its water drains to

See source
Water comes from
See source
Overflows into

Hennagara Kere

See source
Catchment
40.7 km²

The land that drains into it

See source

What lives here

Birds recorded
186 species

Most seen: Black Kite, Common Myna, Indian Pond-Heron, Ashy Prinia and Little Cormorant.

25,637 sightings, mostly from birdwatchers

See source
All wildlife recorded
217 species

25,674 records, 1992 to 2026

See source
Threatened species seen here
10
  • Indian Roller near threatened
  • River Tern vulnerable
  • Spot-billed Pelican near threatened
  • Greater spotted eagle vulnerable
  • Red-necked Falcon near threatened
  • Indian Spotted Eagle near threatened
  • Woolly-necked Stork near threatened
  • Common Pochard vulnerable
  • Black-bellied Tern endangered
  • Rufous-tailed Lark near threatened
See source
Photographed on iNaturalist
198 times

112 species, 160 confirmed by other naturalists.

Most seen: Bronze-winged Jacana, Gray-headed Swamphen, Aponogeton natans, Medium Egret and Ditch Jewel.

Last seen Jul 2026

See source

Around it

Nothing on record about what is around it.

Photos

No photos of it on Wikimedia Commons yet.

Where it is

Greater Bengaluru
Outside the city limits
See source
Height above sea level
894 m
See source
Coordinates

12.7945° N, 77.6323° E

See source

Read more

OpenStreetMap
See source
Its number in each record
ATREE lake map
901
KGIS tank map
1098
miTankId
KA20030008
Water bodies census
1/12/002/000001/000030/001