Before having to teach, I decided to take a small walk along the Thames River that runs through our campus. The river runs a course of about 170 miles, and was extremely high after very heavy rains and high temperatures that melted a great deal of snow. Since then, the river levels have receded significantly, leaving large stretches of sand and transported materials.
I didn't plan on doing any collecting, but where there are rocks...
So these are two snaps of the bank. The deposited material went on for some distance.