Lakes of Bendakaluru

Satellite view: Esri, Maxar, Earthstar Geographics

O.B.Chudanahalli Lake

ಚೂಡಹಳ್ಳಿ ಕೆರೆ

Also called Vaderahalli lake, Vaderahalli lake (Newly Created), Chudahalli Lake

Kere, a large tank, in Badamanavarthakaval (P2) village, Bengaluru South taluk

See it on the map
Size
97.5 acresAbout 55 football pitches
Rank by size
78th largestOf 1,621 lakes that still exist
Valley
Suvarnamukhi
Who looks after it
ZPZilla Panchayat
Water quality
Not tested for water quality yet
Built over
0% of the lakeSatellite land cover, 2021

Through the years

Nothing on record for 1956 to 1979 and 1981 to 1983.

The records listed below, drawn on one line from 1955 to 2026.

  1. 1955

    Not on the U.S. Army map

    Compiled from Survey of India maps of 1945-46

    See source

  2. 1980

    On the survey map

    See source

  3. 1984-2021

    Held water every year

    Water in 50% of all satellite passes, 1984-2024

    0% of its water area has since gone dry; 56% 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

  4. 2000

    Built

    As the 2018 lake survey records it

    See 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

    Green water, 21.2 acres surveyed

    See source

  8. 2025-2026

    Mostly open water after the monsoon and in the dry season

    After monsoon, Oct 2025 to Dec 2025

    • 99% open water
    • 1% floating weed
    • 0.2% dry or built

    Dry season, Mar 2026 to May 2026

    • 76% open water
    • 24% floating weed
    • 0.7% dry or built
    See source

How big it is

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

Drawn outline
97.5 acres

About 55 football pitches

See source
2018 lake survey
21.2 acres

About 12 football pitches

See source
End to end
1.1 km

The longest straight line across the outline

See source
Deepest point, 2018
5 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
Green water
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°CLight transparencycmpHConductivityµS/cmDissolved solidsmg/LSuspended solidsmg/LTurbidityNTUDissolved oxygenmg/LCODmg/LBODmg/LTotal phosphateKjeldahl nitrogenmg/L as NTotal coliformMPN/100mL
2018-02-06Inlet25.1308.288159084.75.4115.64.32.311.21,600
2018-02-06Outlet24.8358.487859484.36.7215.65.020.714170
See source

How much is built over

Built inside the outline
0%

From satellite land cover, 2021

See source
Land within 500 m

43% shrubs, 42% trees, 8% grass, 4% crops, 3% built, 0.6% water

From satellite land cover, 2021

See source

Who looks after it

Looked after by
Zilla Panchayat

ZP

See source

Where its water comes from and goes

Valley
Suvarnamukhi

The river basin its water drains to

See source
Water comes from
See source
Catchment
25.1 km²

The land that drains into it

See source
Fed by, 2018 survey

Rainfall

See source
Built parts, 2018 survey

4 inlet drains, 1 overflow weir, 2 sluice gates, no culverts, no check dams and no islands

See source
Used for, 2018 survey

Cattle feeding and fishing

See source

What lives here

Birds recorded
147 species

Most seen: Brahminy Kite, Little Grebe, Indian Pond-Heron, White-browed Wagtail and Black Kite.

2,079 sightings, mostly from birdwatchers

See source
All wildlife recorded
150 species

2,082 records, 1992 to 2026

See source
Threatened species seen here
4
  • Spot-billed Pelican near threatened
  • Greater spotted eagle vulnerable
  • River Tern vulnerable
  • Rufous-tailed Lark near threatened
See source
Photographed on iNaturalist
89 times

57 species, 68 confirmed by other naturalists.

Most seen: Indian Spot-billed Duck, Indian Pond-Heron, Purple Sunbird, Black-winged Stilt and Small Minivet.

Last seen Jan 2026

See source
Animals seen, 2018 survey

Birds, butterflies and dragonflies

See source
Water plants, 2018 survey

Emergent

See source
Weed cover, 2018 survey

Partial

See source

Around it

Around it in 2018

Plantation, vacant land & hills

See source

Photos

O.B.Chudanahalli Lake, photographed in 2025
Gpkp / CC BY-SA 4.0 / Wikimedia Commons, 2025
O.B.Chudanahalli Lake, photographed in 2025
Gpkp / CC BY-SA 4.0 / Wikimedia Commons, 2025
O.B.Chudanahalli Lake, photographed in 2025
Gpkp / CC BY-SA 4.0 / Wikimedia Commons, 2025
O.B.Chudanahalli Lake, photographed in 2025
Gpkp / CC BY-SA 4.0 / Wikimedia Commons, 2025
O.B.Chudanahalli Lake, photographed in 2025
Gpkp / CC BY-SA 4.0 / Wikimedia Commons, 2025
O.B.Chudanahalli Lake, photographed in 2025
Gpkp / CC BY-SA 4.0 / Wikimedia Commons, 2025
O.B.Chudanahalli Lake, photographed in 2025
Gpkp / CC BY-SA 4.0 / Wikimedia Commons, 2025
O.B.Chudanahalli Lake, photographed in 2025
Gpkp / CC BY-SA 4.0 / Wikimedia Commons, 2025
O.B.Chudanahalli Lake, photographed in 2025
Gpkp / CC BY-SA 4.0 / Wikimedia Commons, 2025

Where it is

Greater Bengaluru
Outside the city limits
See source
Village
Badamanavarthakaval (P2)

Kengeri hobli, Bengaluru South taluk, Bengaluru Urban district

See source
Land survey numbers

136

See source
Height above sea level
803 m
See source
Coordinates

12.8383° N, 77.5327° E

See source

Read more

OpenStreetMap
See source
Its number in each record
ATREE lake map
17
2018 lake survey
BUBSKGbvk_kr11-1169
Lake Development Authority
LDA454
KGIS tank map
1176
Water bodies census
1/12/002/000003/000067/001