Maybe...
Before river ice freezes to a solid thick state the ice is freezing up and it can still be moving down the current and picking up rocks when it moves over shallows.
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This country was started by voyagers whose young lives were swept away by the currents of the rivers for ten cents a day... just for the vanity of the European's beaver hats. ~ Red Bullets
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It is when you walk alone in nature that you discover your strengths and weaknesses. ~ Red Bullets
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