gulch

{{short description|Deep V-shaped valley formed by erosion}}

{{Other uses}}

File:E8236-Tamchy-dry-gulch.jpg, Kyrgyzstan. The creek that may have run along the bottom of the gulch in the past has been diverted to a parallel aryk.]]

A gulch is a deep V-shaped valley formed by erosion. It may contain a small stream or dry creek bed and is usually larger in size than a gully.{{cite web |title=Dictionary of geological terms |url=https://archive.org/details/dictionaryofgeol00amer/page/198/mode/2up |publisher=American Geological Institute |page=199 |date=1976 |quote=a small revine; a small swallow cayon with smoothly included slopes and steep sides. Local in Far West}} Sudden intense rainfall upstream may produce flash floods in the bed of the gulch.

Image:Witches Gulch with people for perspective - narrower.jpg]]

In eastern Canada, gulch refers to:{{cite web |url=http://geonames.nrcan.gc.ca/education/gen_e.php#gulch |title=Gulch |work=Interesting and curious generic terms used in Canada |publisher=Natural Resources Canada |access-date=8 April 2013 |archive-url=https://web.archive.org/web/20110926235804/http://geonames.nrcan.gc.ca/education/gen_e.php#gulch |archive-date=26 September 2011 |url-status=dead }}

• a narrow deep cove (Newfoundland)
• a narrow saltwater channel (Nova Scotia)