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| | The Two Centuries of Caddo Lake Natural History - Find Articles (Site not responding. Last check: ) |
 | | Archaeological evidence, however, reveals that Caddo Lake arose earlier, about 1800, and was simply the result of dead trees piling up in what was a relatively slow-flowing, shallow section of the river. |
 | | During the twentieth century, the lake was dammed for purposes of oil exploration, flood control, and water supply, and it now has a stable water level, with an average depth of eight to ten feet. |
 | | Caddo Lake is one of only seventeen wetlands in the United States that have been designated Ramsar sites, so named for the Convention on Wetlands, which resulted from a forum that took place in Ramsar, Iran, in 1971. |
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