Lakes of Bendakaluru

Satellite view: Esri, Maxar, Earthstar Geographics

Subarayanakere

Also called RBI layout kere, Subrayana Lake, IDBI Layout Lake

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

See it on the map
Size
2.84 acresAbout 1.6 football pitches
Rank by size
1181st largestOf 1,621 lakes that still exist
Valley
Koramangala-Challaghatta
Who looks after it
BBMPBruhat Bengaluru Mahanagara Palike
Water quality
Not tested for water quality yet
Built over
0.7% of the lakeSatellite, 2021. The 2018 survey found 10% encroached.

Through the years

Nothing on record for 1905 to 1979 and 1981 to 1983.

The records listed below, drawn on one line from 1904 to 2026.

  1. 1904

    Built

    As the 2018 lake survey records it

    See source

  2. 1980

    Not on the survey map

    See source

  3. 1984-2021

    Held water in 25 of 38 years

    Water in 2% of all satellite passes, 1984-2024

    0% of its water area has since gone dry; 7% is new water

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

    See sourceSee source

  4. 2017-2018

    In the water bodies census, not marked as encroached

    This census's status marks are often wrong

    See source

  5. 2017-2025

    Mostly built on or bare every year

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

    See source

  6. 2018

    Still there in the 2018 lake survey

    10% encroached, polluted, 5.25 acres surveyed

    See source

  7. 2024

    On the state's list of Bengaluru lakes, looked after by BBMP

    See source

  8. 2025-2026

    Mostly floating weed after the monsoon and in the dry season

    After monsoon, Oct 2025 to Dec 2025

    • 11% open water
    • 58% floating weed
    • 32% dry or built

    Dry season, Mar 2026 to May 2026

    • 0% open water
    • 100% floating weed
    • 0% dry or built
    See source

How big it is

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

Drawn outline
2.84 acres

About 1.6 football pitches

See source
2018 lake survey
5.25 acres

About 3 football pitches

See source
End to end
217 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

State pollution board
Not tested by the state board
How it looked in 2018
Polluted
See source
What pollutes it, 2018

Sewage

See source
Sewage flows in, 2018

From the south-west and north-west

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

Inlet and outlet tests, 2017-18 lake survey

DateWhereWater temperature°CpHConductivityµS/cmDissolved solidsmg/LSuspended solidsmg/LTurbidityNTUDissolved oxygenmg/LCODmg/LBODmg/LTotal phosphateKjeldahl nitrogenmg/L as NTotal coliformMPN/100mLLight transparencycm
2018-02-05Inlet23.96.91,0186269162.40.1912832.443.64234
2018-02-05Outlet20.57.11,0425701321.90.196412.482.840.61,6006
See source

How much is built over

Built inside the outline
0.7%

From satellite land cover, 2021

See source
Encroached area, 2017
0.69 acres

Reported by the state legislature’s committee on lake encroachment

See source
Encroached by

Government agencies and private owners

See source
Taken for

Road, temple

See source
Where it is encroached

On the north-east, south-east and south-west side

See source
Dumped in it

Garbage waste

See source
Land record maps
See source
Land within 500 m

60% built, 29% trees, 4% crops, 4% grass, 2% shrubs, 0.9% water

From satellite land cover, 2021

See source

Who looks after it

Looked after by
Bruhat Bengaluru Mahanagara Palike

BBMP

See source
City lake page

Open its page on the city’s lake monitoring site

See source

Where its water comes from and goes

Valley
Koramangala-Challaghatta

The river basin its water drains to

See source
Overflows into

Hulimavu Kere

See source
Catchment
0.5 km²

The land that drains into it

See source
Fed by, 2018 survey

Rain & drain fed

See source
Built parts, 2018 survey

3 inlet drains, 1 overflow weir, 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

Hulimavu 10MLD Sewage Treatment Plant

2.1 km away, treats 10 million litres a day

See source

What lives here

Birds recorded
83 species

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

1,508 sightings, mostly from birdwatchers

See source
All wildlife recorded
83 species

1,508 records, 2015 to 2024

See source
Threatened species seen here
1
  • Spot-billed Pelican near threatened
See source
Photographed on iNaturalist
1 times

Last seen Aug 2026

See source
Animals seen, 2018 survey

Birds

See source
Water plants, 2018 survey

Emergent and rooted floating

See source
Weed cover, 2018 survey

Partial

See source

Around it

Around it in 2018

Settlement, agriculture, plantation, temple & church

See source

Photos

No photos of it on Wikimedia Commons yet.

Where it is

Ward 41
Kothanur

ಕೊತ್ತನೂರು

Bengaluru South corporation, Bangalore South assembly seat

See source
Village
Gottigere

Uttarahalli hobli, Bengaluru South taluk, Bengaluru Urban district

See source
Land survey numbers

12

See source
Height above sea level
942 m
See source
Coordinates

12.8638° N, 77.5848° E

See source

Read more

OpenStreetMap
See source
Its number in each record
ATREE lake map
155
2018 lake survey
BUBSUHgtg_kr5-1333
Lake Development Authority
LDA431
KGIS tank map
1010
Water bodies census
2/12/002/276600/1302866/002
City lake monitoring site
99