An intermittent streama)has water table above the stream bed throughou...
An intermittent stream has limited contribution from the groundwater. During the wet season the water table is above the stream bed and there is a contribution of the base flow to the stream flow.
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An intermittent streama)has water table above the stream bed throughou...
Intermittent Stream:
An intermittent stream is a stream that flows only during certain times of the year. These streams are also known as seasonal streams, ephemeral streams or dry washes. The flow of intermittent streams depends on the precipitation and runoff of an area. These streams are common in arid and semi-arid regions.
Features of Intermittent Streams:
- Water Table: The water table in intermittent streams is above the stream bed throughout the year. This means that the stream bed is saturated with water and can support aquatic life even during the dry season.
- Flash Flows: Intermittent streams have flash flows in response to storms. During heavy rainfall, the stream bed fills with water and flows until the water is absorbed by the ground.
- Groundwater Contribution: Intermittent streams have flows in the stream during the wet season due to the contribution of groundwater. Groundwater is stored in the soil and rock layers beneath the stream bed. During the wet season, the water table rises, and groundwater flows into the stream.
- No Groundwater Contribution: Intermittent streams do not have any contribution of groundwater at any time. In these streams, the water table is below the stream bed, and the flow is entirely dependent on precipitation and runoff.
Conclusion:
Intermittent streams are a vital component of the ecosystem in arid and semi-arid regions. They support a diverse range of plant and animal life and provide water for irrigation and drinking. Understanding the characteristics of intermittent streams is necessary for effective water management and conservation.