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:, Gfd24l) t .-....:;.. ......--. I I I involved in wilderness classification under the Wilderness Act of 1964. One major distinction, in contrast to wilder- ness, is that a wild river area also may contain recreation facilities for the conveni~ce of the user in keeping with the primitive setting. 1. An "impoundment" is a slack water pool formed by any man-made structure. Except in rare instances in which esthetic and recreational characteristics are of such out- standing quality as to counterbalance the disruptive nature of an impoundment, such features will not be allowed on wild river areas. Future construction uf such structures that would have a direct and adverse effect on the values for which that river area was included in the national system, as determined by the Secretary charged with the administra- tion of the area, would not be permitted. In the case of rivers added to the national system pursuant to Sec.2(a)(ii). such construction could result in a determination by the Secretary of the Interior to reclassify or withdraw the affected river area from the system. 2. "Generally inaccessible" means there are no roads or other provisions for overland motorized travel within a narrow, incised river valley, or if the river valley is broad, within 1/4 mile of the riverbank. Ihe presence, how- ever, of one or two inconspicuous roads leading to the river area will not necessarily bar wild river classification. 3. "Essentially primitive" means the shorelines are free of habitation and other substantial evidence of man's intrusion. This would include such things as diversions, straightening, rip~rapping, and other modifications of the waten.ay. These would not be permitted except in instances where such de- velopments would not have a direct and adverse effect on the values for which that river area was included in the national svstem as determined by the Secretary charged with the admin- istration of the area. In the case of rivers added to the national system pursuant to Section 2(a)(ii), such construc- tion could result in a determination by the Secretary of the Interior to reclassify or withdraw the affected river area from the system. With respect to watersheds, "essentially ~imitive" means that the portion of the watershed within the boundaries has a natural-like appearance. As with shorelines, developments within the boundarres should emphasize a natural- -6-