What is rill?

Rill

In geomorphology, a rill is a natural fluvial topographic feature. Rills form as the initial signs of erosion as shallow waterways on an exposed slope.

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Some articles on rill:

Physical Processes - Water Erosion - Rainfall
... that occur as a direct result of rainfall—sheet erosion, rill erosion, and gully erosion ... first and least severe stage in the soil erosion process, which is followed by rill erosion, and finally gully erosion (the most severe of the three) ... Rill erosion refers to the development of small, ephemeral concentrated flow paths, which function as both sediment source and sediment delivery systems for erosion on hillslopes ...
Starfire (board Wargame) - Races
... although the write-up suggests that it may somehow be tied to either the Kess or J'rill ... J'rill Directorate - The J'rill were a race of cybernetic brainships ... The subjects eventually revolted, but the J'rill had control of nearly every computer at this point, and the subjects were punished for their revolt by being completely wiped out ...
Sleigh Bells (band) - History - 2010–11: Treats
... The track "Rill Rill" from the album Treats was featured on the fourth episode of the fourth season of Gossip Girl, titled "Touch of Eva" ... were shot for the songs "Infinity Guitars" and "Rill Rill" ...

More definitions of "rill":

  • (noun): A small channel (as one formed by soil erosion).