The runoff curve number (also called a curve number or simply CN) is an empirical parameter used in hydrology for predicting direct runoff or infiltration from rainfall excess.[1] The curve number method was developed by the USDA Natural Resources Conservation Service, which was formerly called the Soil Conservation Service or SCS — the number is still popularly known as a "SCS runoff curve number" in the literature. The runoff curve number was developed from an empirical analysis of runoff from small catchments and hillslope plots monitored by the USDA. It is widely used and is an efficient method for determining the approximate amount of direct runoff from a rainfall event in a particular area.
^United States Department of Agriculture (1986). Urban hydrology for small watersheds(PDF). Technical Release 55 (TR-55) (Second ed.). Natural Resources Conservation Service, Conservation Engineering Division.
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The runoffcurvenumber (also called a curvenumber or simply CN) is an empirical parameter used in hydrology for predicting direct runoff or infiltration...
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the necessary drainage systems. Pervious concrete lowers the NRCS RunoffCurveNumber or CN by retaining stormwater on site. This allows the planner/designer...
ground to the water table and chalk streams therefore receive little surface runoff. As a result, the water in the streams contains little organic matter and...
also enter the lotic system already in the FPOM stage by wind, surface runoff, bank erosion, or groundwater. Similarly, DOM can be introduced through...
(117 cu ft/s) for a watershed of 178.1 square kilometres (69 sq mi). The runoffcurvenumber in the watershed is 586 millimetres (23.1 in), which is high, almost...
Moselotte is an extremely abundant river in its upper course. The runoffcurvenumber in this 53 percent of its watershed is 1,445 millimetres (56.9 in)...
its mouth. The runoffcurvenumber at various sites on Blizzards Run ranged from 68.6 to 81.6 in 2010. The average runoffcurvenumber between these sites...
of the Vosges region which feeds it is also very significant. The runoffcurvenumber in its watershed is 868 millimetres (34.2 in) annually, which is...
(69 cu ft/s) for a watershed of 56.9 square kilometres (22.0 sq mi). The runoffcurvenumber in the watershed is 1,086 millimetres (42.8 in), which is very high...
(39 cu ft/s), for a watershed of 24.5 square kilometres (9.5 sq mi). The runoffcurvenumber in the watershed is 1,416 millimetres (55.7 in), which is highly...
The warp parameter and superelevation runoff help calculate the required length of the runoff for a transition curve. As described, cant may be used to reduce...
length can be determined. If the S < L curve length is greater than the headlight sight distance, then this number can be used. If it is smaller, this value...
(SCS) curvenumber method for estimating runoff. It assumes that the total infiltration capacity of a soil can be found from the soil's tabulated curve number...
signal-to-noise ratio of a modulated signal Curvenumber, a parameter used in hydrology for predicting direct runoff or infiltration from rainfall cN, abbreviation...
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