Lake Colac, Colac, Victoria, Australia
S 38° 19.808 E 143° 35.590
54H E 726667 N 5754372
Lake Colac is a freshwater lake in the Western district of Victoria.
While it is frequently used for all water sports (eg water skiing and fishing) evidently it completely dried up in Jan 2009.
Waymark Code: WMMW28
Location: Victoria, Australia
Date Posted: 11/12/2014
Views: 11
Lake Colac is relatively shallow, and has a surface area of 2,668 ha.
With a catchment area of 217 square kilometres.
"Lake Colac is part of the landlocked Corangamite Basin formed by early (Pleistocene and Tertiary) volcanic activity. There are over 1000 lakes and wetlands in the Corangamite Basin many of which have been drained or degraded.
"Volcanic activity blocked the natural outflow of Lake Colac's two tributaries, Deans Creek and Barongarook Creek to the south of Lake Colac and caused the rivers to flow into the basin and leave alluvial deposits. Wind action caused lunettes to form, creating many of these shallow lakes and wetlands.
"Lake Colac is relatively shallow and has a surface area of 2,668 ha. The catchment area of the lake is 217km2. Most of the catchment is made up of volcanic materials whilst tertiary and sand mudstones make up the remainder.
"Volcanic rock and soil has low permeability creating higher runoff than the tertiary sand and mudstone sediments. (Courtesy Colac Otway Shire sign)
The above coordinates are for: "Pelican Point" geocache, GC48QFZ
Lake Type: Other
Coordinates location: 'Centre' of lake
Max. Depth: 2.5m
Surface area: 2668 ha
Parking / trail head: S 38° 19.836 E 143° 35.508
Max. Length: Not listed
Max. Width: Not listed
Website: Not listed
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