The need for accurate, independent records of flow on the Columbia River at The Dalles, Oregon, has been met by the installation of an acoustic streamflow-measuring system. This device provides an index of the velocity of flow by measuring the difference in traveltimes of acoustic pulses transmitted through the water in each direction along a diagonal path across the river. The flow of water along the path increases the speed of one signal and retards the speed of the other. The difference in time of travel is related linearly to the water velocity along the path. Installation of the system, which is the first application of an acoustic flowmeter in a large natural channel, was completed in April 1969. It has been in continuous operation since that date. The velocity index and water-surface elevation are used as a two-variable index in the computation of flow. These variables, correlated against current-meter measurements made by use of specialized boat equipment, provide a reliable basis for computations of instantaneous and daily mean discharges.
Application of an acoustic streamflow-measuring system on the Columbia River at The Dalles, Oregon
Journal of the American Water Resources Association
By: Winchell Smith
Links
- More information: Publisher Index Page (via DOI)
- Download citation as: RIS | Dublin Core
Abstract
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Application of an acoustic streamflow-measuring system on the Columbia River at The Dalles, Oregon |
| Series title | Journal of the American Water Resources Association |
| DOI | 10.1111/j.1752-1688.1971.tb01679.x |
| Volume | 7 |
| Issue | 1 |
| Year Published | 1971 |
| Language | English |
| Publisher | Wiley-Blackwell |
| Description | 10 p. |
| First page | 69 |
| Last page | 78 |
| Country | United States |
| State | Oregon |
| City | The Dalles |
| Other Geospatial | Columbia River |
| Google Analytic Metrics | Metrics page |