Definition of "riparian"

By the time she'd pulled into Bortz's subdivision, a riparian settlement in the style of Fangoso Lagoons, she was only shaking and a little nauseous in the stomach.

1966, Thomas Pynchon, chapter 5, in The Crying of Lot 49, New York: Bantam Books, published 1976, page 112

A kingfisher, an airborne jewel, whirrs past, stickleback in its beak, and disappears into a thicket of riparian willow.

2011 May 28, Jim Perrin, The Guardian

European adventurers found themselves within a watery world, a tapestry of streams, channels, wetlands, lakes and lush riparian meadows enriched by floodwaters from the Mississippi River.

2013 January, Nancy Langston, “The Fraught History of a Watery World”, in American Scientist‎, volume 101, number 1, archived from the original on 22 January 2013, page 59

Relying on the fact that both states are riparian states, the court noted that both have “an equal right to make a reasonable use” of the water in the shared basin and that Florida bore the “heavy burden” of proving its case by clear and convincing evidence.

2021 April 1, Lara Fowler, “No April Fool’s joke for Florida: Water rights case is dismissed”, in SCOTUSblog