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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 ...
A list of the major changes and post-2004 changes are shown in Table 1. The current SWMM edition, Version 5.2.3, is a complete re-write of the previous Fortran releases in the programming language C, and it can be run under Windows XP, Windows Vista, Windows 7, Windows 8, Windows 10 and also with a recompilation under Unix.
3D view. HEC-RAS is simulation software used in computational fluid dynamics – specifically, to model the hydraulics of water flow through natural rivers and other channels.. The program was developed by the United States Army Corps of Engineers in order to manage the rivers, harbors, and other public works under their jurisdiction; it has found wide acceptance by many others since its ...
A number of methods can be used to calculate time of concentration, including the Kirpich (1940) [2] and NRCS (1997) [3] methods. Time of concentration is useful in predicting flow rates that would result from hypothetical storms, which are based on statistically derived return periods through IDF curves .
NRCS offers technical and financial assistance to farmers and ranchers. The financial assistance is authorized by the "Farm Bill", a law that is renewed every five years. The 2014 Farm Bill consolidated 23 programs into 15. [11] NRCS offers these services to private land owners, conservation districts, tribes, and other types of organizations.
October 7, 2021 / 3.4 Mac, Unix, Windows: Create publication-quality PS/PDF plots, Python scripting and plugin interface Visifire: Independent of server side scripting: Proprietary: No 2008: June 5, 2014 / 5.1.7-0 Mac, Windows: VisIt: GUI, C++, Python, and Java: BSD: Yes 2002: May 2018 / 2.13.2 Linux, Mac, Windows: Designed to handle very large ...
TableCurve 2D is a linear and non-linear Curve fitting software package for engineers and scientists that automates the curve fitting process and in a single processing step instantly fits and ranks 3,600+ built-in frequently encountered equations enabling users to easily find the ideal model to their 2D data within seconds.
Runoff curve number is within the scope of WikiProject Soil, which collaborates on Soil and related articles on Wikipedia. If you would like to participate, you can choose to edit this article, or visit the project page for more information.