Lakes of Bendakaluru

Satellite view: Esri, Maxar, Earthstar Geographics

Kelaginakere

ಬಸಪುರ ಕೆರೆ

Also called Basapura Govt.lake, Basapura Lake

Kere, a large tank, in Chikkathoguru ward, Bengaluru South

See it on the map
Size
6.83 acresAbout 3.9 football pitches
Rank by size
904th largestOf 1,621 lakes that still exist
Valley
Koramangala-Challaghatta
Who looks after it
BDABangalore Development Authority
Water quality
Fit only for wildlife and fishTested Jul 2026
Built over
0% of the lakeSatellite, 2021. The 2018 survey found 0.1% encroached.
Campaign
Residents are organising here

Through the years

Nothing on record for 1946 to 1956, 1958 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. 1957

    Built

    As the 2018 lake survey records it

    See source

  3. 1980

    Not on the survey map

    See source

  4. 1984-2021

    Held water most years

    Water in 24% of all satellite passes, 1984-2024

    0% of its water area has since gone dry; 65% 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 water every year

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

    See source

  7. 2018

    Still there in the 2018 lake survey

    0.1% encroached, polluted, 10.7 acres surveyed

    See source

  8. 2025-2026

    Tested by the state board in 16 months, most often fit only for wildlife and fish

    Apr 2025 to Jul 2026

    See every testSee source

  9. 2025-2026

    Mostly dry or built after the monsoon; mostly open water in the dry season

    After monsoon, Oct 2025 to Dec 2025

    • 19% open water
    • 25% floating weed
    • 56% dry or built

    Dry season, Mar 2026 to May 2026

    • 74% open water
    • 8% floating weed
    • 18% dry or built
    See source

How big it is

The records disagree on its size, so each measure is shown.

Drawn outline
6.83 acres

About 3.9 football pitches

See source
2018 lake survey
10.7 acres

About 6.1 football pitches

See source
End to end
288 m

The longest straight line across the outline

See source
Deepest point, 2018
2 m
See source
Kind of lake
Kere, a large tank
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 16 times since Apr 2025
Fit only for wildlife and fish: 14 months. Fit only for irrigation: 2 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
How it looked in 2018
Polluted
See source
What pollutes it, 2018

Sewage

See source
Sewage flows in, 2018

From the east

See source
Inlet and outlet tests, 2017-18
2 readings
See source
Every reading
Show every reading

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

MeasureUnitValue
Water temperature°C25
Dissolved oxygenmg/L4.8
pH6.7
ConductivityµS/cm884
BODmg/L5
Nitratemg/L as N3.6
Nitritemg/L as N0.13
Faecal coliformMPN/100mL1,300
Total coliformMPN/100mL2,800
Bicarbonatemg/L80
TurbidityNTU22.3
Total alkalinitymg/L as CaCO380
Chloridemg/L148
CODmg/L48
Ammonia nitrogenmg/L as N0.56
Total hardnessmg/L as CaCO3196
Calcium hardnessmg/L as CaCO3104
Calciummg/L41.6
Magnesium hardnessmg/L as CaCO392
Magnesiummg/L22.4
Sulphatemg/L33
Sodiummg/L76
Dissolved solidsmg/L598
Suspended solidsmg/L28
Potassiummg/L3
Fluoridemg/L0.29
Sodium share%45
Sodium adsorption ratio2.35

Every month the state board tested it

MonthClassDissolved oxygenmg/LBODmg/LFaecal coliformMPN/100mLTotal coliformMPN/100mLSource
Jul 2026D4.851,3002,800See source
Jun 2026D6.147003,500See source
May 2026E3163,1008,400See source
Apr 2026E3.1123102,200See source
Mar 2026D4.873103,500See source
Feb 2026D65.64603,500See source
Jan 2026D5.953104,300See source
Dec 2025D5.483302,400See source
Nov 2025D6.351701,500See source
Oct 2025D4.172102,100See source
Sep 2025D5.752602,800See source
Aug 2025D5.272103,500See source
Jul 2025D4.854302,800See source
Jun 2025D5.653202,200See source
May 2025D672302,100See source
Apr 2025D4.682,30015,000See source

Inlet and outlet tests, 2017-18 lake survey

DateWhereWater temperature°CLight transparencycmpHConductivityµS/cmDissolved solidsmg/LSuspended solidsmg/LTurbidityNTUDissolved oxygenmg/LCODmg/LBODmg/LTotal phosphateKjeldahl nitrogenmg/L as NTotal coliformMPN/100mL
2018-01-10Inlet25.868.31,26880439350.96.912815.371.29.11,600
2018-01-10Outlet27.17.51,12873681477.64.833693.61.624.534
See source

How much is built over

Built inside the outline
0%

From satellite land cover, 2021

See source
Encroached area, 2017
0.47 acres

Reported by the state legislature’s committee on lake encroachment

See source
Encroached by

The public and government agencies

See source
Taken for

Graveyard, road

See source
Where it is encroached

On the north and south-west side

See source
Dumped in it

Construction debris

See source
Other problems noted

Layout being developed adjacent to the lake without maintaining the buffer zone

See source
Land record maps
See source
Land within 500 m

40% built, 26% trees, 21% crops, 8% shrubs, 5% grass, 0.7% bare ground

From satellite land cover, 2021

See source

Who looks after it

Looked after by
Bangalore Development Authority

BDA

See source
City lake page

Open its page on the city’s lake monitoring site

See source
Campaign pages
See source

Where its water comes from and goes

Valley
Koramangala-Challaghatta

The river basin its water drains to

See source
Water comes from
See source
Overflows into

Begur Lake

See source
Catchment
1.2 km²

The land that drains into it

See source
Fed by, 2018 survey

Rain & drain

See source
Built parts, 2018 survey

1 inlet drain, no overflow weirs, no sluice gates, no culverts, no check dams and no islands

See source
Used for, 2018 survey

Cattle feeding

See source
Nearest sewage treatment plant

Chikkabeguru Sewage Treatment Plant

1.8 km away

See source

What lives here

Birds recorded
115 species

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

2,775 sightings, mostly from birdwatchers

See source
All wildlife recorded
122 species

2,783 records, 2016 to 2026

See source
Threatened species seen here
2
  • Indian Roller near threatened
  • Spot-billed Pelican near threatened
See source
Photographed on iNaturalist
25 times

21 species, 22 confirmed by other naturalists.

Most seen: Plain Prinia, Jungle Myna, Eastern Cattle-Egret, Indian Pond-Heron and crown flower.

Last seen Jun 2026

See source
Water plants, 2018 survey

Emergent, free floating and rooted floating

See source
Weed cover, 2018 survey

Partial

See source

Around it

Around it in 2018

Layout, vacant land & graveyard

See source

Photos

No photos of it on Wikimedia Commons yet.

Where it is

Ward 34
Chikkathoguru

ಚಿಕ್ಕ ತೋಗೂರು

Bengaluru South corporation, Bangalore South assembly seat

See source
Village
Basapura

Begur hobli, Bengaluru South taluk, Bengaluru Urban district

See source
Land survey numbers

66

See source
Height above sea level
916 m
See source
Coordinates

12.8686° N, 77.6442° E

See source

Read more

OpenStreetMap
See source
Its number in each record
ATREE lake map
99
2018 lake survey
BUBSBGbsp_kr3-1402
Lake Development Authority
LDA033
KGIS tank map
983
Water bodies census
2/12/002/276600/1302864/003
City lake monitoring site
129