| Lake
Lanao |
|
| Mindanao,
Philippines |
| Earth's Natural Wonders in
Asia |
| |
| Lake Lanao is
the second largest lake in the
Philippines and has an area of
131 square miles (340 square km).
Its outlet is the Agus River,
which flows north, over Maria
Cristina Falls, where there is
a hydroelectric power plant, to
Iligan Bay. There are numerous
Muslim villages around the lake[2]. |
| Max. length-33
km |
Lake
Lanao, Marawi City, Lanao del
Sur [1] |
| Max. Width-20
km |
|
Lake Lanao
Lake Lanao or Ranaw
is a large lake in the Philippines,
located in Lanao del Sur province
in the country's southern island of
Mindanao. With a surface area of 340
km². (131 square miles), it is
the largest lake in Mindanao, and
the second largest lake in the Philippines
and counted as one of the 15 ancient
lakes in the world.
The lake was formed
by the tectonic-volcanic damming of
a basin between two mountain ranges
and the collapse of a large volcano.
It has a maximum depth of 112 meters,
and a mean depth of 60.3 meters. The
basin is shallowest towards the north
and gets progressively deeper towards
the south.
The lake is fed by four
rivers. Its only outlet is the Agus
River, which flows southwest into
Iligan Bay via two channels, one over
the Maria Cristina Falls and the other
over the Linamon Falls. A hydroelectric
plant installed on the Lanao Lake
and Agus River system generates 70%
of the electricity used by the people
of Mindanao.
The lake is home to
18 endemic species of freshwater fish
and supports a large number of waterfowl.
In October 2006, a study from the
Mindanao State University discovered
massive algae contamination in Lake
Lanao[2]. Initially, poor sewage and
agricultural waste management were
seen as the culprit to the contamination.
However, the Department of Agriculture
and the Bureau of Fisheries and Aquatic
Resources stated that soil erosion
from indiscriminate logging and extensive
land use and farming are the problems
that caused the algae contamination.
The lake is home to 18
endemic species of freshwater fish and
supports a large number of waterfowl.
In October 2006, a study from the Mindanao
State University discovered massive
algae contamination in Lake Lanao. Initially,
poor sewage and agricultural waste management
were seen as the culprit to the contamination.
However, the Department of Agriculture
and the Bureau of Fisheries and Aquatic
Resources stated that soil erosion from
indiscriminate logging and extensive
land use and farming are the problems
that caused the algae contamination
It is about the origin
of Lake Lanao
