Sign by storm drain on Pend Oreille Road NE on the campus of the University of Washington, Seattle, Washington: "No dumping. Drains to lake," meaning Lake Washington.
<a href="//commons.wikimedia.org/wiki/User:Jmabel" title="User:Jmabel">Joe Mabel</a>
CC BY-SA 4.0
Photo by <a href="//commons.wikimedia.org/wiki/User:Jmabel" title="User:Jmabel">Joe Mabel</a>