How the National Forests Protect River Sources 



Top. — Willow Creek, one of the sources of the Colorado 

 River, in the Arapaho National Forest, Colo. The stream 

 comes gently from the belt of forest which stores melting 

 snow from above timber line on the Parkview Peaks. 



Bottom. — Trapper's Lake, also on the headwaters of the 

 Colorado River, in the White River National Forest, 

 Colo. The dense stands of timber which are char- 

 acteristic of such situations help to prevent erosion and 

 irregular run-off. 



