rating curve

rating curve

[′rād·iŋ ‚kərv]
(hydrology)
For a given point on a stream, a graph of discharge versus stage.
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intervals in river stage, from near bankfull to the upper limit of the USGS rating curve.
For example, rating curves for open water conditions on the Yenisey at Igarka and the Lena at Kusur have not been updated since 2003, and the rating curve for open water conditions on the Kolyma at Kolymskoye has not been updated since 1998.
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.
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].
A rating curve will need to be completed to measure the water level to flow rates to achieve a discharge curve.
Lot 2:Procurement and installation of equipment forproviding conditions for the reliable rating curves at hydrologicalstations,
Equally appropriate for agricultural engineering, civil engineering, and hydrologic science, this graduate textbook introduces Shannon entropy, the principle of maximum entropy, concentration theorem, and the principle of minimum cross-entropy, and applies the concepts to sediment concentration and discharge, hydraulic geometry, channel design, water flow rating curves, water level monitoring networks, and reliability analysis of water distribution systems.
It is also used to estimate storage requirements; compute outlet rating curves with tail water impacts; and analyze interconnected ponds with multiple outfalls and bi-directional flow.