What are the methods of stream gauging?


What are the methods of stream gauging?

Most commonly used methods for stream gauging are: 1. Area-Velocity Method 2. Area Slope Method 3….Discharge Measuring Structures.

  • Area-Velocity Method:
  • Area-Slope Method:
  • Discharge Measuring Structures:

What is meant by stream gauging?

Stream gaging is a technique used to measure the discharge, or the volume of water moving through a channel per unit time, of a stream. The height of water in the stream channel, known as a stage or gage height, can be used to determine the dischage in a stream.

How is discharge determined at a stream gaging station?

Discharge for a gaging station is typically determined from an established stage-discharge relation, or rating curve (U.S.G.S.). That is, the hydrologists familiar with the history of a particular drainage basin can accurately predict discharge by measuring stream height (stage).

What is stream gauging and monitoring?

A streamgage is a structure installed beside a stream or river that contains equipment that measures and records the water level (called gage height or stage) of the stream.

How do stream gauges work?

In the simplest method, a current meter turns with the flow of the river or stream. The current meter is used to measure water velocity at predetermined points (subsections) along a marked line, suspended cableway, or bridge across a river or stream. The depth of the water is also measured at each point.

How is stream discharge measured?

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.

What is the base level of a stream?

Base level is that level below which a stream can not erode. Most streams flow into larger streams and eventually larger ones flow into the ocean. For rivers that flow in to an ocean, base level is sea level. Sea level is base level for the Mississippi River.

Which equipment is used in stream gauge?

Which of the following equipment is used in stream gauge? Explanation: Stream gauge involves the usage of cable ways and stilling well. Cable ways are used for suspending a current meter whereas, stilling well is used to provide calm water level.

What is the average depth of a stream?

The actual depth of the river channel typically ranges from 10-20 feet, with sharply decreasing depth outside of the channel.

What are three major streamflow measurements?

There are three methods: One-point, Two-point, and Three-point.