How would you describe streamflow?
Streamflow, or channel runoff, is the flow of water in streams, rivers, and other channels, and is a major element of the water cycle. Water flowing in channels comes from surface runoff from adjacent hillslopes, from groundwater flow out of the ground, and from water discharged from pipes.
What factors affect streamflow?
Mechanisms that cause changes in streamflow
- Runoff from rainfall and snowmelt.
- Evaporation from soil and surface-water bodies.
- Transpiration by vegetation.
- Ground-water discharge from aquifers.
- Ground-water recharge from surface-water bodies.
- Sedimentation of lakes and wetlands.
What is streamflow in hydrology?
Stream flow, or discharge, is the volume of water that moves over a designated point over a fixed period of time. The flow of a stream is directly related to the amount of water moving off the watershed into the stream channel. It is affected by weather, increasing during rainstorms and decreasing during dry periods.
What is the importance of streamflow?
Streamflow information is required to determine how much water is available in different locations so the citizens can make informed decisions about growth and to help assure there is an adequate water supply even during periods of drought.
What determines a river’s competence?
River Competence: Rivers and streams carry sediment that ranges in size from clay (smallest) to boulders (biggest). The “competence” of a river or stream refers to the largest particles that a river can transport. Several smaller streams have combined higher in the Sierras to generate this river.
What factor does not influence streamflow?
The factor that does not influence stream velocity is b. stream elevation. While gravity is what causes water to flow through the stream, the actual…
How do forests regulate streamflow?
Forests are responsible for capturing water from the atmosphere by increasing rainfall and condensing fog. This effect is enhanced by the taller trees and rougher canopy of an oldgrowth forest. In a natural forest situation most of the streamflow response to rainfall is provided by the groundwater system.
Which of the following is used to measure streamflow?
Sources/Usage: Public Domain. The velocity of the streamflow can be measured using a current meter. The most common current meter used by the USGS is the Price AA current meter. The Price AA current meter has a wheel of six metal cups that revolve around a vertical axis.