This scenario have been tested only on Age of Empires version 1.0 (vanilla). Functional on Warchiefs and Asian (Warchiefs changes the US' flag).
The swamp lake IS NOT based on Evergaldes' Lake Okeechobee. Instead, The swamp lake is a "more realistic" AOE3 campaign's Moon Lake I imagined. I used the Bayou terrain patterns, forests and water.
You play as a Spanish colony in Florida. Cross the sailable river, and you will be right on Lousianna, near the American colony. Both have similar size of land.
The landscape of each size is based on Bayou: islands separeted by crossable water.
There are one seminole village and one cherokee village each size of the "lake".