Assertion: otter's range | /r/HasProperty | the gunnison river
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text: In Colorado, according to a recent conservation assessment prepared for the U. S. Department of Agriculture by biologist Steve Boyle, the river otter, augmented by subsequent reinforcements from Minnesota, Wisconsin, Michigan, Virginia, Oregon, Washington, California, Alaska and even Newfoundland, has extended its range into the upper Colorado River, in the Rocky Mountain National Park; the Gunnison River, in the state’s west central counties; the Piedra and Dolores Rivers, in the state’s southwestern corner.