rating curve

rating curve

[′rād·iŋ ‚kərv]
(hydrology)
For a given point on a stream, a graph of discharge versus stage.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Thus, understandably, few were able to grasp concepts in water-related geometry such as Hydraulic Radius and Rating Curve. A considerable number even faced problems in the handling of the survey equipment and geometric tools.
For example, in the Probable Maximum Flood (PMF) example provided by the authors, it might be hoped that the client would happily augment the scope of the study to extend the rating curve based on detailed hydraulic modelling, as the costs involved would be small compared to the construction costs.
The rating curve method was used to estimate the amount of SSD transported during the whole year and during typhoon periods.
Similarly, for the locations where there are stage-only measurements, the system cannot convert model-forecast discharge into stage without a rating curve. For those locations, the IFC also provides the index displayed only as a function of time color bar.
Using statistical analysis and regression functions, they found that the best fitted rating curve for all the stations estimated the sediment value more than the observed one and did not improve the classified information involving time, discharge and sediment values and flow separation by the means of correction coefficient of rating curve.
Sediment rating curve techniques have long been used to estimate suspended sediment loads from continuous flow records and sporadic sediment concentration measurements when suspended sediment concentrations are correlated with discharge (Miller, 1951; Walling, 1977; Preston et al., 1989).
Each section includes drawings, specifications, current rating curve, terminal description and other useful information.
Coefficients determination should be based data from a long-term period; otherwise, the sediment rating curve data would be excessively scattered [6].
Bonta and Goyal (2001) found that an independent baffle was also required upstream of the weir to produce a rating curve that was independent of upstream approach slopes as steep as 75% and approach angles as large as 45[degrees].