What is intermittent stream in hydrology?
Intermittent stream means a stream that is below the local water table and flows for at least some part of the year, and obtains its flow from both surface runoff and ground water discharge.
What does intermittent water mean?
According to the U.S. Environmental Protection Agency definition, an intermittent river, or intermittent stream, is any river or stream that only flows during certain times of the year, and may not have any flowing surface water during the dry season.
What is an intermittent stream channel?
Intermittent streams are those with discernible channels which show evidence of annual deposition or scour, but which do not carry flow yearround (USDA and USDI 1994). Intermittent streams were not consistently protected from landuse disturbance in the past.
Why are streams intermittent?
Seasonal streams (intermittent) flow during certain times of the year when smaller upstream waters are flowing and when groundwater provides enough water for stream flow. Runoff from rainfall or other precipitation supplements the flow of seasonal stream. Larger seasonal streams are more common in dry areas.
What makes a stream a stream?
A stream is a body of water with surface water flowing within the bed and banks of a channel. The flow of a stream is controlled by three inputs – surface water, subsurface water and groundwater. The surface and subsurface water are highly variable between periods of rainfall.
What is intermittent flow?
River flow that is irregular and only occurs after heavy rain or snow melt.
Is an intermittent stream channel in the dry land areas?
Blowouts are broad, shallow depressions excavated by deflation. Intermittent streams in dry areas of the western United States are called washes.
How do you know if a stream is intermittent?
A stream that has flowing water during certain times of the year, when groundwater provides water for stream flow. During dry periods, intermittent streams may not have flowing water. Runoff from precipitation is a supplemental source of water for stream flow.
What is intermittent drainage?
Intermittent drainage means a stream or reach of a stream that flows for at least some part of the year and obtains its flow from surface runoff and ground water discharge.
What characterizes intermittent streams?
intermittent stream A stream which ceases to flow in very dry periods. The flow may occur when the water-table is seasonally high, but there will not be flow when the water-table is significantly below the river-channel bed level.
How do you describe a stream?
A stream is a body of water with surface water flowing within the bed and banks of a channel. The flow of a stream is controlled by three inputs – surface water, subsurface water and groundwater. Long large streams are usually called rivers.