Lakes of Bendakaluru

Satellite view: Esri, Maxar, Earthstar Geographics

Devarakere

Also called ISRO Layout Lake

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

See it on the map
Size
5.36 acresAbout 3 football pitches
Rank by size
1003rd largestOf 1,621 lakes that still exist
Valley
Vrishabhavathi
Who looks after it
BBMPBruhat Bengaluru Mahanagara Palike
Water quality
Fit only for wildlife and fishTested Jul 2026
Built over
20% of the lakeSatellite land cover, 2021

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 most years

    Water in 14% of all satellite passes, 1984-2024

    3% of its water area has since gone dry; 14% 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

    Clean, 7.38 acres surveyed

    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. 2024

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

    See source

  9. 2025-2026

    Mostly floating weed after the monsoon; mostly open water in the dry season

    After monsoon, Oct 2025 to Dec 2025

    • 31% open water
    • 54% floating weed
    • 16% dry or built

    Dry season, Mar 2026 to May 2026

    • 54% open water
    • 24% floating weed
    • 22% dry or built
    See source

How big it is

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

Drawn outline
5.36 acres

About 3 football pitches

See source
Land records
7.38 acres

About 4.2 football pitches

See source
2018 lake survey
7.38 acres

About 4.2 football pitches

See source
End to end
229 m

The longest straight line across the outline

See source
Deepest point, 2018
3 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 36 times since Jul 2023
Fit only for wildlife and fish: 25 months. Fit only for irrigation: 11 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
Clean
See source
Older tests
2 readings

From 2021

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

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

MeasureUnitValue
Water temperature°C27
Dissolved oxygenmg/L4.6
pH7.3
ConductivityµS/cm679
BODmg/L6
Nitratemg/L as N2.73
Faecal coliformMPN/100mL840
Total coliformMPN/100mL2,800
Bicarbonatemg/L176
TurbidityNTU16.2
Total alkalinitymg/L as CaCO3176
Chloridemg/L52
CODmg/L64
Ammonia nitrogenmg/L as N0.68
Total hardnessmg/L as CaCO3216
Calcium hardnessmg/L as CaCO3112
Calciummg/L44.8
Magnesium hardnessmg/L as CaCO3104
Magnesiummg/L25.3
Sulphatemg/L29
Sodiummg/L55
Dissolved solidsmg/L462
Suspended solidsmg/L20
Potassiummg/L2
Fluoridemg/L0.56
Sodium share%41
Sodium adsorption ratio1.63
Orthophosphatemg/L0.48

Every month the state board tested it

MonthClassDissolved oxygenmg/LBODmg/LFaecal coliformMPN/100mLTotal coliformMPN/100mLSource
Jul 2026D4.668402,800See source
Jun 2026E2.6294,90013,000See source
May 2026D5.674803,500See source
Apr 2026E1.9304709,200See source
Mar 2026E1.1116305,400See source
Feb 2026E2.8372,2007,900See source
Jan 2026D653302,400See source
Dec 2025E3.1138402,800See source
Nov 2025D5.553,2009,400See source
Oct 2025D5.172,1009,400See source
Sep 2025E2.2412601,400See source
Aug 2025D4.281,4009,400See source
Jul 2025D5.8513,00058,000See source
Jun 2025D4.671,2006,300See source
May 2025D5.181,40013,000See source
Apr 2025D5.971,7007,000See source
Mar 2025D5.461,1004,600See source
Feb 2025D5.341702,400See source
Jan 2025D552,3007,900See source
Dec 2024D4.881,70013,000See source
Nov 2024E2.352402,200See source
Oct 2024D6.2101,1004,600See source
Sep 2024D5.952,1004,800See source
Aug 2024D4.691,7007,000See source
Jul 2024E2.9162,1009,400See source
Jun 2024D5.281,30013,000See source
May 2024E782002,800See source
Apr 2024D4.252103,500See source
Mar 2024D4.4112,1009,400See source
Feb 2024E2.1193,3004,800See source
Jan 2024D4.977,90035,000See source
Dec 2023E2.2164,90035,000See source
Oct 2023D5.855,80092,000See source
Sep 2023D6.44See source
Aug 2023D5.474,8001,60,000See source
Jul 2023D4.454,00035,000See source

Older tests

DateWhereReadingWater temperature°CDissolved oxygenmg/LpHConductivityµS/cmBODmg/LNitrate and nitritemg/L as NFaecal coliformMPN/100mLTotal coliformMPN/100mLSource
2021Devarakere Tank, TankLowest2536.527130.34,70035,000See source
2021Devarakere Tank, TankHighest257.37.62,540176.694,0009,20,000See 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
2018-02-0623.1218.48733204294.2814.42141,600
See source

How much is built over

Built inside the outline
20%

From satellite land cover, 2021

See source
Encroached area, 2017
0.51 acres

Reported by the state legislature’s committee on lake encroachment

See source
Dumped in it

Garbage

See source
Land within 500 m

74% built, 16% trees, 5% crops, 2% grass, 1% water, 0.8% bare ground, 0.5% shrubs

From satellite land cover, 2021

See source

Who looks after it

Looked after by
Bruhat Bengaluru Mahanagara Palike

BBMP

See source
City work on the lake
To be developed
See source
City zone
Bommanahalli
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
Vrishabhavathi

The river basin its water drains to

See source
Water comes from
See source
Overflows into

Doraikere

See source
Catchment
1.8 km²

The land that drains into it

See source
Fed by, 2018 survey

Rain & drain fed

See source
Built parts, 2018 survey

1 inlet drain, 1 overflow weir, 1 sluice gate, no culverts, no check dams and no islands

See source
Used for, 2018 survey

Religious activity

See source
Nearest sewage treatment plant

Sarakki 5MLD Sewage Treatment Plant

2.2 km away, treats 5 million litres a day

See source

What lives here

Birds recorded
97 species

Most seen: Black Kite, Common Tailorbird, Little Grebe, White-cheeked Barbet and Red-whiskered Bulbul.

3,308 sightings, mostly from birdwatchers

See source
All wildlife recorded
100 species

3,312 records, 2014 to 2026

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

34 species, 36 confirmed by other naturalists.

Most seen: Little Grebe, Tickell's Blue Flycatcher, Eurasian Coot, Brahminy Kite and Tropical Leatherleaf Slug.

Last seen Jul 2026

See source
Animals seen, 2018 survey

Birds

See source
Water plants, 2018 survey

Emergent, submerged and rooted floating

See source
Weed cover, 2018 survey

Partial

See source

Around it

Around it in 2018

Temple, settlement & vacant land

See source

Photos

No photos of it on Wikimedia Commons yet.

Where it is

Ward 49
Uttarahalli

ಉತ್ತರಹಳ್ಳಿ

Bengaluru South corporation, Bangalore South assembly seat

See source
Village
Bikasipura

Uttarahalli hobli, Bengaluru South taluk, Bengaluru Urban district

See source
Land survey numbers

9

See source
Height above sea level
883 m
See source
Coordinates

12.8978° N, 77.5546° E

See source

Read more

OpenStreetMap
See source
Its number in each record
ATREE lake map
478
2018 lake survey
BUBSUHbkp_kr2-1319
KGIS tank map
1036
Water bodies census
2/12/002/276600/1302869/002
City lake monitoring site
148