A slow, methodical search of the canyon-riddled backcountry in Grand Canyon National Park continues to come up empty in the search for a 43-year-old North Carolina man thought to have descended below the South Rim around August 31.

Additional resources have been added in the search for a 43-year-old North Carolina man thought to be missing at Grand Canyon National Park. Park officials are seeking the assistance of anyone who has visited the park within the last week and might have information on his whereabouts.

A search was under way Sunday for a 43-year-old North Carolina man thought to be missing in the Grand Canyon National Park.

A longstanding problem for fisheries in the Upper Colorado River Basin is the competing demands for water. It's needed for irrigation, it's needed to generate power, and it's needed, not surprisingly, to sustain fisheries. With drought a frequent visitor to the states of Wyoming, Colorado and Utah, how that huge watershed is cooperatively managed is critical for all these demands.