(ËdÉl tÉÉªd) n. 1. a large, triangular muscle covering the joint of the shoulder, the action of which raises the arm away from the side of the body. adj. 2. pertaining to or involving the deltoid. 3. in the shape of a Greek capital delta (Î´); triangular.
The Morongo Basin is located centrally in the southern portion of the state of California in the United States. The Morongo basin is part of the Inland Empire area, and is considered to be the easternmost portion of the Greater Los Angeles region, the 2nd largest metropolitan region in the United States. Joshua Tree National Park lies within the basin.
Drainage basin: The area drained by a river and its tributaries. A drainage basin is considered to be an open system because water can be added or lost from a drainage basin.