Types of lake

types of lake

1. Types of lake
Presented by
Ahmad Ali
P.hD scholar P.U
chandigarh

2. Lake
A depression on the surface of the earth, where water gets collected .
known as a lake.

3. Where does each lake type fall
on the line?
Low
nutrients
Very high
nutrients

4. Lake types
On the basis of its tropic status
Trophy = nutrient (phosphorus and
nitrogen )
1.Oligotrophic.
2.Mesotrophic.
3.Eutrophic.

5. low nutrients (P&N)
Clear water
Often steep sided and deep
Usually replenished by snow, glacier melt
Examples: Lake Tahoe, Crater Lake
Oligotrophic lakes

6. Mesotrophic lakes
Meso = middle or mid
Great fishing lakes
Stratification

7. Eutrophic lakes
High nutrient levels
Murky, green water
Usually shallow.
Usually replenished by rivers/streams

9. Cultural Eutrophication
We artificially cause lakes to become
eutrophic by
Runoff
Pollutants
Thermal pollution
Lakes become hypereutrophic

10. Other lake types

11. Tectonic lakes
Ex. Lake Baikal

12. rwen.asnle.uk Volcanic lake kknowasle.uwst.rnioa(wo.aoswrwsP
&nN).utl(.stl.ktCs.nOO.rnioa(n.uwii.fl.Owiile.uwst.
uaslN
Associated with volcanic activity
Form when the shut off volcano will be filled with
water

13. ie.nsk(lP.ukt Glacier Lakes knowaslew.suewstrni(Pws&tstPkrnwaNsaww)w.was(.as
l&aw.wasCOsuewsfp(P&wnd
U.asuewstrni(Pwsl&ppsCwsi&ppwasCOsfp(P&wnsowpusl(uwn
Formed when the surface is scoured, deepened and
widened by the glacier.
And the surface will be filled by glacier melt water

14. &.eoNlP.ukt Salty Lakes
y(rtwsCOsuewsp&o&uwastr))pOskisinwtel(uwn

hw.aw.POsuksPk.Pw.un(uwsuewsl(uwnsl&ueso&.wn(pt
Cause by the limited supply of freshwater
Tendency to concentrate the water with minerals

15. )(osCsns.elP.ukt Artificial Lakes
b(.o(awsp(,wt

knsl(uwnsnwtwngk&ntNswpwPun&P&uOsfw.wn(u&k.NswuPd
Manmade lakes
For water reservoirs, electricity generation, etc.

16. Oxbow lake

17. Meromictic lake
Layer of water which don't intermix

18. Rift valley lake

19. Thank you