[E-ur-o-tas], named for river in southern Greece, Earth. (see names, Mythological, Graeco-Roman)Largest river on the planet Sparta [see Sparta];Length (main stream): 9,600 kilometersDrainage basin: 8,225,000 sq. kilometersMaximum volume: 860,000,000 litersMinimum volume: 475,000,000 litersDescription: The Eurotas is customarily divided into the Lower, Middle and Upper Valleys, respectively, and the Delta. The Delta proper flows northward into the nearly circular Constitution Bay, encompassing an area of approx. 25,000 sq. kilometers of silt and peat-soil marshes, undergoing reclamation for agriculture in some areas. The Lower Valley runs north-south between the Lycourgos Hills fronting on the Aegean Sea in the west, and the twin ranges of Parnassus and Pindaros on the east, separating the Eurotas from the Jefferson Ocean (q.v.). Lying between the river-ports of Clemens and Olynthos is the Middle Valley, occupying a low-lying fault zone between uplifted blocks on the north and south. To the west, the upper portion of the Middle Valley is flanked on the south and west by the Illyrian Dales, a region of limestone uplands, and beyond these by the Drakon Mountains.