Photos courtesy Grand County Historical Association
As a child, Donald Dailey would help fill 12 ounce plastic bottles from the Colorado River and send them in an aluminum case to Denver.
His parents, Hot Sulphur Springs residents Buck and Shirley Dailey, spent 20 years taking daily water samples for the United States Geological Survey.
Grand sits at the headwaters of a river that nearly 40 million Americans rely on. The Colorado River travels 1,400 miles across a watershed that includes seven US states, two states in Mexico and carves the Grand Canyon.
Sunday marks the 100th Colorado River Day, recognizing the anniversary of the day the river got its name.
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