(CO.-WY.-UT.) Drainage Basins - Green & Grand Rivers., U.S. Govt., 1890 A great contrast between political borders and resource borders. Here a governmental look at potential drainage basins and the tremendously important issue of water in the U.S. West. While red borders abstractly separate the region in to geometric shapes, the gold-ish lines separate the individual drainage basins for the rivers and creeks of the area. Does note include some of the major peaks. Condition is good with overall toning to the paper, and a close lower left edge. Image size is approximately 14.5 x 13 (inches)