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Draining 275 square miles (710 km 2), the Arroyo Seco River is the last major tributary of the Salinas River that enters before it reaches the Pacific.Most of the watershed lies in the rugged coastal range areas southwest of Greenfield and Soledad, and the drainage divide runs along the crest of the Santa Lucia Mountains to the west and the lower Sierra de Salinas to the northeast.
The Doña Ana County Flood Commission in the U.S. state of New Mexico defines an arroyo as "a watercourse that conducts an intermittent or ephemeral flow, providing primary drainage for an area of land of 40 acres (160,000 m 2) or larger; or a watercourse which would be expected to flow in excess of one hundred cubic feet per second as the result of a 100 year storm event."
A streambed or stream bed is the bottom of a stream or river and is confined within a channel, or the banks of the waterway. [1] Usually, the bed does not contain terrestrial (land) vegetation and instead supports different types of aquatic vegetation ( aquatic plant ), depending on the type of streambed material and water velocity.
[49]: 57–58 A wash, desert wash, or arroyo is normally a dry streambed in the deserts of the American Southwest, which flows after sufficient rainfall. In Italy, an intermittent stream is termed a torrent (Italian: torrente). In full flood the stream may or may not be "torrential" in the dramatic sense of the word, but there will be one or ...
The meandering aisle resembles a dry streambed surrounded by rock outcroppings covered with succulents and cactus. Camellias and jasmines were in full bloom. Behind the three main halls is the ...
Where the streambed is still natural, it consists of a mixture of cobbles and rocks. [7] The source of Meadow Brook used to be a series of springs and seeps on a ridge near the base of the Moosic Mountains. [3] [4] The springs also fed a complex of glacial bogs and wetlands.
The dry period of intermittent streams is ended by what is called "rewetting" or a wetting front. Rewetting is defined as the resumption of waterflow through the stream. [ 32 ] This happens when the gain of the water is higher than the loss of it into the pores of the substrate/soil, also known as infiltration. [ 33 ]
Dry valley: A valley not created by sustained surface water flow. Erosional valley: A valley formed by erosion. Hollow: A term used regionally for a small valley surrounded by mountains or ridges. In Ireland, New England, Appalachia, and the Ozarks of Arkansas and Missouri, a hollow is a small valley or dry stream bed; sometimes also called a ...