UNIVERSITY OF COLORADO STUDIES 



near the 1 1 ,000-foot contour in Lake County southeast of Homestake 

 Peak. The headwaters and upper portion of the stream he between 

 the Continental Divide and the Mosquito Range, in a mountain 

 valley which narrows at its southern end into a canyon. Leaving 

 this canyon at Canyon City, where the stream has an elevation of 

 but 6,500 feet, the Arkansas flows eastward across the state as a plains 



Map of Colorado showing the mass elevations and their relations to the several river 

 systems. 



stream. It receives numerous tributaries from the foothill region, 

 chief among which are Fountain Creek from the north and Greenhorn 

 and Huerfano rivers from the south. The Arkansas is also joined 

 in the plains by Horse Creek from the north and the Apishapa and 

 Purgatory rivers from the south, the last two being typical plains 

 streams although their headwaters are on the east slopes of the Sangre 

 de Cristo and Culebra ranges. An area of a few hundred square 



