flow of water, typically with less than a 45 degree slope.

(n) natural or artificial channel through which water flows(n) a natural body of running water flowing on or under the earth(n) a conduit through which water flows

a river, stream, brook, or even an artificial water channel such as a ditch or canal

Any surface flow such as a river, stream, tributary.

any channel, either natural or artificial, through which water flows

Any surface flow such as a river, stream, tributary.

also water-course, c. 1500, from water (n.1) + course (n.).

definition - a horizontal flow of water. It could be a stream, but may more often be used to describe a more formal or architectural looking channel of water.

Watercourse refers to any flowing body of water.

Any natural or man-made stream, pond, lake, wetland, coastal wetland, swamp, or other body of water. This includes wet meadows, marshes, swamps, bogs, and areas where groundwater, flowing or standing [..]

A natural or artificial channel through which water flows.

Any surface flow such as a river, stream, tributary.

1. A stream of water. 2. A natural channel through which water runs. See also GULLY, WASH.

Any surface flow such as a river, stream, tributary.

Natural or man-made channel through or along which water may flow. International Glossary of Hydrology, WMO/UNESCO, 2012  1

A natural channel for water, which may sometimes dry.

A flow of water with typically less than 45-degree slope.

All means of conveying water except a water main or sewer.