Lake rejuvenation
how not to do it

GV Dasarathi
dasarathigv@gmail.com
We need these visitors in our lakes

They add immensely to the beauty of a lake,
and give us joy.
What do these birds need ?

They need a sloping mud bank with reeds growing, to feed, nest
and live.
The banks must be rea...
Example of bad 'rejuvenation' – Sankey Tank

Sloping mud bank was replaced by vertical concrete walls.
3 large islands wih...
Example of bad 'rejuvenation' – Sankey Tank

A sanitized lake – most prominent feature is the brown concrete.
The only bir...
Example of good rejuvenation – Puttenahalli
lake

Walking path for humans, with a sloping mud bank beyond it leading to
th...
Result – a paradise for birds and bird
watchers
Some basic design rules
to follow in Bangalore's lakes

1. Design for humans, birds and aquatic life, not just humans.
2. ...
How NOT to rejuvenate lakes
How NOT to rejuvenate lakes
Upcoming SlideShare
Loading in...5
×

How NOT to rejuvenate lakes

1,402
-1

Published on

A number of Banaglore's lakes have been 'rejuvenated' badly. What you see is a body of water with concrete walls around it. Greenery has been removed, and birds driven away. The presentation compares two different examples of lake rejuvenation.

4 Comments
0 Likes
Statistics
Notes
  • Be the first to like this

No Downloads
Views
Total Views
1,402
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
12
Comments
4
Likes
0
Embeds 0
No embeds

No notes for slide

How NOT to rejuvenate lakes

  1. 1. Lake rejuvenation how not to do it GV Dasarathi dasarathigv@gmail.com
  2. 2. We need these visitors in our lakes They add immensely to the beauty of a lake, and give us joy.
  3. 3. What do these birds need ? They need a sloping mud bank with reeds growing, to feed, nest and live. The banks must be reasonably far from human movement, so the birds feel safe.
  4. 4. Example of bad 'rejuvenation' – Sankey Tank Sloping mud bank was replaced by vertical concrete walls. 3 large islands wih trees and grass were removed – just one small island remains, with a single dead tree. This removed almost all the living and nesting areas of birds. Hence the zero birds in this picture.
  5. 5. Example of bad 'rejuvenation' – Sankey Tank A sanitized lake – most prominent feature is the brown concrete. The only birds seen are Cormorants that sit on trees beyond the bank, and do not need shallow water to live and feed in. The water reflects the brown of the walls and the blue of the sky, so you have blue-brown coloured water.
  6. 6. Example of good rejuvenation – Puttenahalli lake Walking path for humans, with a sloping mud bank beyond it leading to the water. No vertical walls enclosing the lake. The water reflects the green of the bank and the blue of the sky, so you have blue-green coloured water.
  7. 7. Result – a paradise for birds and bird watchers
  8. 8. Some basic design rules to follow in Bangalore's lakes 1. Design for humans, birds and aquatic life, not just humans. 2. Walking path on outer periphery, then sloping mud bank leading to the water. 3. Humans do not have access to the mud bank – it is fenced off. 4. Ensure that there are islands in the lake, with trees. If necessary, ADD Islands. 5. Minimize the use of stone and concrete. It heats up the place, while mud, reeds and water keep the place cool.
  1. A particular slide catching your eye?

    Clipping is a handy way to collect important slides you want to go back to later.

×