EARTH SCIENCE
GROUNDWATER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the distance its water travels over time
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the volume of water that flows over time
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the amount of sediment it carries over time
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the amount of dissolved minerals it carries over time
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Detailed explanation-1: -The discharge of water flowing in a channel is measured using stream gauges or can be estimated by the Manning equation. The record of flow over time is called a hydrograph. Flooding occurs when the volume of water exceeds the capacity of the channel.
Detailed explanation-2: -Stream discharge is measured by multiplying the velocity of water flowing through a channel by its width and depth.
Detailed explanation-3: -discharge = area x velocity The most common method used by the USGS for measuring velocity is with a current meter. However, a variety of advanced equipment can also be used to sense stage and measure streamflow. In the simplest method, a current meter turns with the flow of the river or stream.
Detailed explanation-4: -Multiply the average depth of the stream by the width of the stream to find the area in ft2. Divide the distance traveled by the average travel time to find the velocity of the stream in ft/sec. Multiply the velocity of the stream by a correction factor.