Lakes of Bendakaluru

Satellite view: Esri, Maxar, Earthstar Geographics

Puttenahalli Lake

ಪುಟ್ಟೇನಹಳ್ಳಿ ಕೆರೆ

Also called Puttanahalli Lake, Puttenahalli Lake Birds Conservation Reserve

Kere, a large tank, in Doddabettahalli ward, Bengaluru North

See it on the map
Size
28.6 acresAbout 16 football pitches
Rank by size
324th largestOf 1,621 lakes that still exist
Valley
Hebbal
Who looks after it
KFDKarnataka Forest Department
Water quality
Fit only for wildlife and fishTested Jul 2026
Built over
0.4% of the lakeSatellite land cover, 2021
Campaign
Residents are organising here

Through the years

Nothing on record for 1904 to 1926, 1928 to 1954, 1956 to 1977 and 1979 to 1983.

The records listed below, drawn on one line from 1903 to 2026.

  1. 1903

    Built

    As the 2018 lake survey records it

    See source

  2. 1927

    On the survey map

    See source

  3. 1955

    On the U.S. Army map

    Compiled from Survey of India maps of 1945-46

    See source

  4. 1978

    On the survey map

    See source

  5. 1984-2021

    Held water in 1 of 38 years

    Water in 1% of all satellite passes, 1984-2024

    0% of its water area has since gone dry; 8% 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

    No one cover holds over half of it 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

    Polluted, 37.0 acres surveyed

    See source

  9. 2023-2026

    Tested by the state board in 33 months, most often fit only for wildlife and fish

    Aug 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
    • 99% floating weed
    • 1% dry or built

    Dry season, Mar 2026 to May 2026

    • 0.2% open water
    • 97% floating weed
    • 3% dry or built
    See source

How big it is

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

Drawn outline
28.6 acres

About 16 football pitches

See source
2018 lake survey
37.0 acres

About 21 football pitches

See source
End to end
823 m

The longest straight line across the outline

See source
Deepest point, 2018
0.5 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 33 times since Aug 2023
Fit only for wildlife and fish: 23 months. Fit only for irrigation: 10 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 south-west

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, kjeldahl nitrogen

MeasureUnitValue
Water temperature°C27
Dissolved oxygenmg/L4.5
pH8.1
ConductivityµS/cm917
BODmg/L5
Nitratemg/L as N3.6
Faecal coliformMPN/100mL140
Total coliformMPN/100mL1,600
Bicarbonatemg/L216
TurbidityNTU8
Total alkalinitymg/L as CaCO3216
Chloridemg/L156
CODmg/L49
Ammonia nitrogenmg/L as N0.4
Total hardnessmg/L as CaCO3248
Calcium hardnessmg/L as CaCO3132
Calciummg/L52.8
Magnesium hardnessmg/L as CaCO3116
Magnesiummg/L28.2
Sulphatemg/L40
Sodiummg/L89
Dissolved solidsmg/L622
Suspended solidsmg/L14
Phosphatemg/L0.28
Potassiummg/L5
Fluoridemg/L0.3
Sodium share%35
Sodium adsorption ratio2.5
Orthophosphatemg/L0.77

Every month the state board tested it

MonthClassDissolved oxygenmg/LBODmg/LFaecal coliformMPN/100mLTotal coliformMPN/100mLSource
Jul 2026D4.551401,600See source
Jun 2026E2.483402,400See source
May 2026E392302,400See source
Apr 2026E1.6384702,200See source
Mar 2026D4.493303,500See source
Feb 2026D5.251101,600See source
Jan 2026E3.3223201,400See source
Dec 2025E2.9262102,400See source
Nov 2025D5.373104,300See source
Oct 2025E2.1294605,400See source
Sep 2025E3.5152403,500See source
Jul 2025D4.26261,600See source
Jun 2025D6.64211,600See source
May 2025D5.472,6007,000See source
Apr 2025D5.872402,800See source
Mar 2025D6.252,40014,000See source
Feb 2025D4.6107804,900See source
Jan 2025D783103,500See source
Dec 2024D5.852604,300See source
Nov 2024D6.672103,500See source
Oct 2024E3.115261,600See source
Sep 2024D7.152005,400See source
Aug 2024D5.872605,400See source
Jul 2024D7.392,6009,400See source
Jun 2024D7.17.32609,200See source
May 2024E263,30014,000See source
Mar 2024E2.4381,7007,900See source
Feb 2024D4.973302,400See source
Jan 2024D5.754,60017,000See source
Dec 2023D5.1579,0003,50,000See source
Oct 2023D5.2670016,000See source
Sep 2023D4.474905,400See source
Aug 2023D4.1113,30035,000See source

Older tests

DateWhereReadingWater temperature°CDissolved oxygenmg/LpHConductivityµS/cmBODmg/LNitrate and nitritemg/L as NFaecal coliformMPN/100mLTotal coliformMPN/100mLSource
2021Puttenahalli Lake, LakeLowest2536.645931.13,30024,000See source
2021Puttenahalli Lake, LakeHighest256.37.71,173222.5794,0005,40,000See 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/100mL
2017-11-2821.371,07085076471.6360900.4151,600
See source

How much is built over

Built inside the outline
0.4%

From satellite land cover, 2021

See source
Encroached area, 2017
1.00 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

50% built, 40% trees, 4% crops, 4% shrubs, 2% bare ground, 0.8% grass

From satellite land cover, 2021

See source

Who looks after it

Looked after by
Karnataka Forest Department

KFD

See source
Campaign pages
See source

Where its water comes from and goes

Valley
Hebbal

The river basin its water drains to

See source
Water comes from
See source
Overflows into

Yelahanka Lake

See source
Catchment
12.9 km²

The land that drains into it

See source
Fed by, 2018 survey

Rainfall & 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
Nearest sewage treatment plant

Yelahanka Waste Water Treatment Plant

321 m away

See source

What lives here

Birds recorded
152 species

Most seen: Gray Heron, Western Swamphen, Indian Pond-Heron, Black Kite and Little Egret.

15,644 sightings, mostly from birdwatchers

See source
All wildlife recorded
285 species

15,994 records, 2004 to 2026

See source
Threatened species seen here
6
  • Indian Roller near threatened
  • Spot-billed Pelican near threatened
  • Woolly-necked Stork near threatened
  • Caterpillar Slug endangered
  • Bonnet macaque vulnerable
  • Teak endangered
See source
Photographed on iNaturalist
1,386 times

392 species, 735 confirmed by other naturalists.

Most seen: Coromandel Marsh Dart, Common Bluetail, Ditch Jewel, Red Weaver Ant-mimicking Spider and Common Picture Wing.

Last seen Aug 2026

See source
Animals seen, 2018 survey

Birds

See source
Water plants, 2018 survey

Emergent, submerged and free floating

See source
Weed cover, 2018 survey

Complete

See source

Around it

Around it in 2018

Settlement, plantation & Puttenahalli bus depot

See source

Photos

No photos of it on Wikimedia Commons yet.

Where it is

Ward 6
Doddabettahalli

ದೊಡ್ಡಬೆಟ್ಟಹಳ್ಳಿ

Bengaluru North corporation, Yelahanka assembly seat

See source
Village
Puttenahalli

Yelahanka hobli, Bengaluru North taluk, Bengaluru Urban district

See source
Land survey numbers

36 (Puttenahalli), 49 (Atturu)

See source
Height above sea level
915 m
See source
Coordinates

13.1121° N, 77.5779° E

See source

Read more

Wikipedia

Puttenahalli WS Lake also spelled as Puttanahalli Lake is a 10-hectare water body near Yelahanka, 14 km north of Bangalore.

Read Puttenahalli Lake (Yelahanka) on Wikipedia

See source
Kannada Wikipedia

ಪುಟ್ಟೇನಹಳ್ಳಿ ಸರೋವರವು 10 ಹೆಕ್ಟೇರ್ ನೀರಿನ ಪ್ರದೇಶವಾಗಿದ್ದು ಯಲಹಂಕದ ಬಳಿ ಯಲ್ಲಿದೆ. ಬೆಂಗಳೂರಿನ ಉತ್ತರಕ್ಕೆ 14 ಕಿ.ಮೀ. ಜೀವವೈವಿಧ್ಯ ತಜ್ಞರು ಇಲ್ಲಿ 49 ಜಾತಿಯಪಕ್ಷಿಗಳ ಸಂತಾನೋತ್ಪತ್ತಿಯನ್ನು ಕಂಡುಹಿಡಿದಿದ್ದಾರೆ. ಆ ಪಕ್ಷಿಗಳ ಪೈಕಿ ಡಾರ್ಟರ್ಸ್, ಪೇಂಟೆಡ್ ಕೊಕ್ಕರೆಗಳು, ಕಪ್ಪು ಕಿರೀಟಧಾರಿ ರಾತ್ರಿಯ ಹೆರಾನ್ಗಳು, ನೇರಳೆ ಬಣ್ಣದ ಹೆರಾನ್ಗಳು, ಕೊಳದ ಹೆರಾನ್ಗಳು ಇವೆ.

ಪುಟ್ಟೇನಹಳ್ಳಿ ಸರೋವರ

See source
OpenStreetMap
See source
Wikidata

Q7262461

See source
Its number in each record
ATREE lake map
61
2018 lake survey
BUBNYHptn_kr6-310
Lake Development Authority
LDA404
KGIS tank map
863
Water bodies census
2/12/002/253189/025884/002