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Some days the Mamquam River is bright blue, other dast is milky white, greenish, brown, or even greige (grey-beige) So, what going on? "Turbidity" describes how cloudy water gets when itgarr sediment. The river is glacier-fed, so when ice melts, it brings dow powdery sediment called "rock flour." This happens when glaciers slowly scrape and grind the bedrock peng them. The river's colour shifts with the spasons, temperature, and how much me s and volcanic sediment is flowing Hotter summers and lighter nowfalls means aremelting taster, shedding deeper layers of ice.
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