Anyone have theories on why the Charles River has a clear frozen/not frozen line in Watertown while it is frozen throughout all the way downstream into Cambridge? Took this photo yesterday

Officials warn people to keep off frozen Charles River - The Boston Globe

Glacières or Freezing Caverns, by Edwin Swift Balch, a Project Gutenberg eBook.

How does a river freeze when the water keeps moving (thermodynamics, fluid dynamics, water, ice, physics)? - Quora

Building Blocks History Architecture, Planning, Conservation

The Adirondack Chronology by Kelly Adirondack Center - Issuu

Discover Concord Summer 2023 by Discover Concord MA - Issuu

1930–31 Volume 55 No 1–5 - Phi Delta Theta Scroll Archive

Anyone have theories on why the Charles River has a clear frozen/not frozen line in Watertown while it is frozen throughout all the way downstream into Cambridge? Took this photo yesterday

Up close and freezing: Chemistry in Pictures Winner, Chem 13 News Magazine

Ice then and now: When the Fraser became a skating rink