The Hydrological Functioning of the Watershed of Lake Laya- El Hammam, East of Tunisia

The hydrological rate of flow of the watershed of Lake Laya El Hammam depends on its morphometric and geological features as well as its precipitation.The watershed of Lake Laya El Hammam is part of the coastal watersheds in the central-east of Tunisia. It is the only watershed which is not affected by hydraulic constructions such as dams. Besides, it features a surface area that extends to 204 km2 and a high recorded rainfall. To determine the hydrological rate of flow of the watershed, we had to identify its geological and morphometric characteristics, and gauge the flow of Lake Laya El Hammam. The final results have allowed us to identify: the general aspect of the flow of water in the watershed of Lake Laya El Hammam, the relationship lake/ sheet and the importance of gauging in Eastimating the rate of flow of water during periods marked by lack of rain.