Canyon

Arizona Republicans challenge Biden’s designation of a national monument near the Grand Canyon

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The Arizona Legislature’s top two Republicans have challenged Democratic President Joe Biden’s creation of a new national monument last summer just outside Grand Canyon National Park, alleging he exceeded his legal authority in making that designation under a century-old law that lets presidents protect sites considered historically or culturally important. In a lawsuit filed Monday … Read more

The Fight Against the Smallmouth Bass Invasion of the Grand Canyon

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Today, however, four of those fish—the humpback chub, the Colorado pikeminnow, the razorback sucker, and the bonytail—are federally listed as threatened or endangered. Lake Powell commandeered the Colorado’s payloads of silt and stymied natural floods, erasing channels and backwaters where chubs and suckers once spawned and reared. And smallmouth bass and other invasive species devastated … Read more