The Caddo Lake  wetland ecosystem is a large, shallow, wetland complex located at the bottom of the Cypress Creek watershed of  Texas and Louisiana, in the south central region of the United States, approximately 180km east of Dallas, Texas.  The climate of this region is subtropical with hot, humid summers and mild winters. Composed of one of the largest remaining cypress-tupelo community assemblages in the region, these wetlands exhibit high biodiversity of plants and animals, as well as an important sports fishery and waterfowl and songbird migratory habitat that is a key link in  flyways stretching from South America to the Arctic. In 1993 Caddo Lake was designated as a "wetland of international importance", under the so-called Ramsar Convention, through the collaborative efforts of the state of Texas, the U.S. Department of Interior and the Caddo Lake Institute.*

*Information from the  Caddo Lake Institute