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J J JH6 Ill, Description of the Study Area The study area for the Little Snake River Water Management Project (LSR~W) is located in south central Wyoming. Plate 1, located in the back of the study, is an area map showing the location of the study area with respect to the Rocky Mountain region. The development alternatives presented in this study propose to utilize the water resources of the Little Snake River. The Little Snake River is a head- water tributary of the Colorado River. The Little Snake River flows into the Yampa River in the northwest corner of Colorado; thence, the Yampa flows into the Green River. The Green River flows into the Colorado River in Utah, near Moab. Plate 2 is a vicinity map of the study area. The vicinity map shows the Little Snake River and its tributaries as well as the location of communities in the vicinity of the project area. Also shown on Plate 2 are the major road Toutes in the project area. A. Topography The topography of the study area is highly variable, ranging from the alpine features of the 'Jppcr Sierra Madre Range to the dissected pediments of the lower slopes, to the tablelands and floodplains of the bottomlands. Ele- vation varies from 11,000 feet above sea level in the Sierra Madres to 6,100 feet at the valley floor of the Little Snake River and Jack Creek. The lands that are irrigated in the Little Snake drainage are located along the alluvial valley floor of the Little Snake River, Savery Creek, and other tributaries of the Little Snake River. Some irrigation occurs on the dis- sected mesaS and terr3ces adjacent to the major streams in the study area. Any new irrigation development would probably occur on the dissected mesas and ter- races adjacent to the Little Snake River and Savery Creek, III-l