Crawford Lake Conservation Area
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| Crawford Lake | |
|---|---|
| Location | Ontario |
| Lake type | Meromictic |
| Basin countries | Canada |
| Surface area | 0.024 km² |
| Max. depth | 22.5 m |
| Surface elevation | 279 m |
Crawford Lake near Campbellville, Ontario is a conservation area owned and operated by the Halton Region Conservation Authority. The lake itself is meromictic which allows for the sequential deposition of seasonal sediment laminations called varves at the bottom of the lake. These allow for accurate dating of sediment cores taken from the lake which makes this lake a prime site for archeological and geochemical studies. Using pollen analysis, reconstruction of the history of the area over several hundred years was possible. This analysis revealed the agricultural history of the native Iroquois Indians and the presence of a village. The Wendat village has been painstakingly reconstructed in the conservation area based on many years of work by archaeologists. Moreover, geochemical analysis of sediment cores has allowed for the reconstruction of the pollution history of the area. This analysis revealed the trends and sources of air pollution over approximately 150 years.
The cost to get in to Crawford lake is under $10.00. It is a wonderful place to learn about what people before our time did. As a lake that's currently going through eutrophication, it predicted that the lake may evaporate in the next few hundred years and following that may become a new Crawford Forest.
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