Lakes of Bendakaluru

Satellite view: Esri, Maxar, Earthstar Geographics

Lagamenahalli Lake

See it on the map
Size
8.84 acresAbout 5 football pitches
Rank by size
811th largestOf 1,621 lakes that still exist
Valley
Dakshina Pinakini
Who looks after it
Nobody on record looks after it
Water quality
Fit only for irrigationTested Jul 2026
Built over
0% of the lakeSatellite land cover, 2021

Through the years

Nothing on record for 1915 to 1973 and 1975 to 1983.

The records listed below, drawn on one line from 1914 to 2026.

  1. 1914

    Not on the survey map

    See source

  2. 1974

    On the survey map

    See source

  3. 1984-2021

    Held water most years

    Water in 24% of all satellite passes, 1984-2024

    0% of its water area has since gone dry; 65% is new water

    10 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. 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

  5. 2025-2026

    Tested by the state board in 16 months, most often fit only for wildlife and fish

    Apr 2025 to Jul 2026

    See every testSee source

  6. 2025-2026

    Mostly open water after the monsoon; mostly dry or built in the dry season

    After monsoon, Oct 2025 to Dec 2025

    • 74% open water
    • 12% floating weed
    • 14% dry or built

    Dry season, Mar 2026 to May 2026

    • 16% open water
    • 31% floating weed
    • 53% dry or built
    See source

How big it is

Drawn outline
8.84 acres

About 5 football pitches

See source
End to end
377 m

The longest straight line across the outline

See source

How clean the water is

Latest test
Fit only for irrigation

Fit only for irrigation, cooling and waste disposal. Class E on the state board’s scale from A, the cleanest, to E.

Tested Jul 2026

See source
Class each month, tested 16 times since Apr 2025
Fit only for wildlife and fish: 9 months. Fit only for irrigation: 7 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
Every reading
Show every reading

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

MeasureUnitValue
Water temperature°C25
Dissolved oxygenmg/L0.6
pH7.5
ConductivityµS/cm1,726
BODmg/L15
Nitratemg/L as N6.6
Faecal coliformMPN/100mL940
Total coliformMPN/100mL9,200
Bicarbonatemg/L400
TurbidityNTU10
Total alkalinitymg/L as CaCO3400
Chloridemg/L296
CODmg/L164
Kjeldahl nitrogenmg/L as N5.8
Ammonia nitrogenmg/L as N4.5
Total hardnessmg/L as CaCO3472
Calcium hardnessmg/L as CaCO3240
Calciummg/L96
Magnesium hardnessmg/L as CaCO3232
Magnesiummg/L56.4
Sulphatemg/L76
Sodiummg/L168
Dissolved solidsmg/L1,174
Suspended solidsmg/L20
Phosphatemg/L0.48
Potassiummg/L10
Fluoridemg/L0.28
Sodium share%36
Sodium adsorption ratio3.4
Orthophosphatemg/L1.47

Every month the state board tested it

MonthClassDissolved oxygenmg/LBODmg/LFaecal coliformMPN/100mLTotal coliformMPN/100mLSource
Jul 2026E0.6159409,200See source
Jun 2026D5.162702,400See source
May 2026D5.262,10,0004,60,000See source
Apr 2026D564902,400See source
Mar 2026D4.661,7007,000See source
Feb 2026E1.7531702,400See source
Jan 2026E0.9303,90017,000See source
Dec 2025D5.454903,500See source
Nov 2025D4.864,30092,000See source
Oct 2025E2.3201,70013,000See source
Sep 2025D4.984302,800See source
Aug 2025E0.9362602,200See source
Jul 2025D591,7007,000See source
Jun 2025D5.852101,700See source
May 2025E2.8272,60014,000See source
Apr 2025E2.5213102,800See source

How much is built over

Built inside the outline
0%

From satellite land cover, 2021

See source
Land within 500 m

57% crops, 13% grass, 11% built, 10% trees, 8% shrubs, 0.9% bare ground, 0.8% water

From satellite land cover, 2021

See source

Who looks after it

Nobody on record looks after it.

Where its water comes from and goes

Valley
Dakshina Pinakini

The river basin its water drains to

See source
Water comes from
See source
Overflows into

Hosakote Doddaamanikere

See source
Catchment
2 km²

The land that drains into it

See source

What lives here

Birds recorded
149 species

Most seen: Spotted Dove, Common Myna, Indian Pond-Heron, Rock Pigeon and Little Egret.

2,066 sightings, mostly from birdwatchers

See source
All wildlife recorded
149 species

2,066 records, 2021 to 2024

See source
Threatened species seen here
8
  • Spot-billed Pelican near threatened
  • Greater spotted eagle vulnerable
  • Indian Roller near threatened
  • River Tern vulnerable
  • Red-necked Falcon near threatened
  • Imperial Eagle vulnerable
  • Lesser Adjutant near threatened
  • Indian Spotted Eagle near threatened
See source
Photographed on iNaturalist
1 times

Last seen Nov 2020

See source

Around it

Nothing on record about what is around it.

Photos

No photos of it on Wikimedia Commons yet.

Where it is

Greater Bengaluru
Outside the city limits
See source
Height above sea level
868 m
See source
Coordinates

13.0730° N, 77.7562° E

See source

Read more

OpenStreetMap
See source
Its number in each record
ATREE lake map
1090
KGIS tank map
522