Lakes of Bendakaluru

Satellite view: Esri, Maxar, Earthstar Geographics

Parapana Agahara Lake

Also called Parappana Agrahara Lake, Parappana Agrahara Kere

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

See it on the map
Size
13.3 acresAbout 7.5 football pitches
Rank by size
620th largestOf 1,621 lakes that still exist
Valley
Koramangala-Challaghatta
Who looks after it
BBMPBruhat Bengaluru Mahanagara Palike
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 1905 to 1944, 1946 to 1954, 1956 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. 1945

    On the survey map

    See source

  3. 1955

    Not on the U.S. Army map

    Compiled from Survey of India maps of 1945-46

    See source

  4. 1980

    On the survey map

    See source

  5. 1984-2021

    Held water in 22 of 38 years

    Water in 7% of all satellite passes, 1984-2024

    0% of its water area has since gone dry; 36% is new water

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

    See sourceSee source

  6. 2017-2018

    In the water bodies census, not marked as encroached

    This census's status marks are often wrong

    See source

  7. 2017-2025

    Mostly water in most years

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

    See source

  8. 2018

    Still there in the 2018 lake survey

    Clean, 16.3 acres surveyed

    See source

  9. 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

  10. 2025-2026

    Mostly floating weed after the monsoon and in the dry season

    After monsoon, Oct 2025 to Dec 2025

    • 0% open water
    • 98% floating weed
    • 2% dry or built

    Dry season, Mar 2026 to May 2026

    • 0% open water
    • 81% floating weed
    • 19% dry or built
    See source

How big it is

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

Drawn outline
13.3 acres

About 7.5 football pitches

See source
Land records
17.3 acres

About 9.8 football pitches

See source
2018 lake survey
16.3 acres

About 9.2 football pitches

See source
End to end
415 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: 22 months. Fit only for irrigation: 14 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
What pollutes it, 2018

Sewage

See source
Sewage flows in, 2018

From the south-east and west

See source
Older tests
2 readings

From 2021

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, phenolphthalein alkalinity, kjeldahl nitrogen

MeasureUnitValue
Water temperature°C24
Dissolved oxygenmg/L4.9
pH7.4
ConductivityµS/cm895
BODmg/L5
Nitratemg/L as N3.5
Nitritemg/L as N0.14
Faecal coliformMPN/100mL700
Total coliformMPN/100mL2,800
Bicarbonatemg/L276
TurbidityNTU10.2
Total alkalinitymg/L as CaCO3276
Chloridemg/L116
CODmg/L48
Ammonia nitrogenmg/L as N0.4
Total hardnessmg/L as CaCO3232
Calcium hardnessmg/L as CaCO3120
Calciummg/L48
Magnesium hardnessmg/L as CaCO3112
Magnesiummg/L27.2
Sulphatemg/L32
Sodiummg/L75
Dissolved solidsmg/L612
Suspended solidsmg/L14
Phosphatemg/L0.64
Potassiummg/L5
Fluoridemg/L0.37
Sodium share%41
Sodium adsorption ratio2.14
Orthophosphatemg/L1.87

Every month the state board tested it

MonthClassDissolved oxygenmg/LBODmg/LFaecal coliformMPN/100mLTotal coliformMPN/100mLSource
Jul 2026D4.957002,800See source
Jun 2026D5.265,80012,000See source
May 2026E376302,800See source
Apr 2026D5.554709,200See source
Mar 2026D4.984302,200See source
Feb 2026D5.353101,700See source
Jan 2026E3173,10014,000See source
Dec 2025D6.244605,400See source
Nov 2025D6.944709,200See source
Oct 2025D5.6521,0001,70,000See source
Sep 2025D6.253905,400See source
Aug 2025D583202,800See source
Jul 2025D4.874702,200See source
Jun 2025E2.1252402,200See source
May 2025D5.962602,200See source
Apr 2025E1.2321404,300See source
Mar 2025D5.491,1009,400See source
Feb 2025E2.52912,00070,000See source
Jan 2025D5.9122,3009,400See source
Dec 2024E3.2152,10011,000See source
Nov 2024D5.4103,3009,400See source
Oct 2024D4.442105,400See source
Sep 2024E3.1171402,400See source
Aug 2024D5.75241,600See source
Jul 2024D5.662,60011,000See source
Jun 2024D4.1141,4004,800See source
May 2024E3.2191402,800See source
Apr 2024E6614,00046,000See source
Mar 2024E2.31713,00033,000See source
Feb 2024E2.5132,6004,800See source
Jan 2024E1.3247,00035,000See source
Dec 2023E2.6823,0002,40,000See source
Oct 2023D5.563,10035,000See source
Sep 2023D4.1134,8001,60,000See source
Aug 2023E3.4124,7001,60,000See source
Jul 2023D5.3443016,000See source

Older tests

DateWhereReadingWater temperature°CDissolved oxygenmg/LpHConductivityµS/cmBODmg/LNitrate and nitritemg/L as NFaecal coliformMPN/100mLTotal coliformMPN/100mLSource
2021Parappana Agrahara Lake, LakeLowest251.86.520750.32,30024,000See source
2021Parappana Agrahara Lake, LakeHighest256.581,297387.911,00,00092,00,000See source

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
2018-02-05Inlet23.47.460855637.23.92320.551.812.61,600
2018-02-05Outlet22.87.55833501520.35.6329.931.116.81,60022
See source

How much is built over

Built inside the outline
2%

From satellite land cover, 2021

See source
Encroached area, 2017
0.19 acres

Reported by the state legislature’s committee on lake encroachment

See source
Dumped in it

Garbage dump

See source
Land record maps
See source
Land within 500 m

49% built, 20% trees, 16% crops, 8% shrubs, 6% grass, 1% bare ground

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
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
Koramangala-Challaghatta

The river basin its water drains to

See source
Overflows into

Doddakodlu

See source
Catchment
1.4 km²

The land that drains into it

See source
Fed by, 2018 survey

Rain

See source
Built parts, 2018 survey

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

See source
Nearest sewage treatment plant

Chikkabeguru Sewage Treatment Plant

2.6 km away

See source

What lives here

All wildlife recorded
2 species

2 records, all in 2020

See source
Photographed on iNaturalist
1 times

Last seen Jan 2026

See source
Animals seen, 2018 survey

Birds

See source
Water plants, 2018 survey

Emergent

See source

Around it

Around it in 2018

Settlement & plantation & vacant land

See source

Photos

No photos of it on Wikimedia Commons yet.

Where it is

Ward 33
Naganathapura

ನಾಗನಾಥಪುರ

Bengaluru South corporation, Bangalore South assembly seat

See source
Village
Parappana Agrahara

Begur hobli, Bengaluru South taluk, Bengaluru Urban district

See source
Land survey numbers

23

See source
Height above sea level
915 m
See source
Coordinates

12.8791° N, 77.6613° E

See source

Read more

OpenStreetMap
See source
Its number in each record
ATREE lake map
150
2018 lake survey
BUBSBGppa_kr2-1489
Lake Development Authority
LDA399
KGIS tank map
970
Water bodies census
2/12/002/276600/1302863/001
City lake monitoring site
136