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  2. Standard step method - Wikipedia

    en.wikipedia.org/wiki/Standard_Step_Method

    The STM numerically solves equation 3 through an iterative process. This can be done using the bisection or Newton-Raphson Method, and is essentially solving for total head at a specified location using equations 4 and 5 by varying depth at the specified location. [5] = Equation 4

  3. Flow net - Wikipedia

    en.wikipedia.org/wiki/Flow_net

    The method consists of filling the flow area with stream and equipotential lines, which are everywhere perpendicular to each other, making a curvilinear grid.Typically there are two surfaces (boundaries) which are at constant values of potential or hydraulic head (upstream and downstream ends), and the other surfaces are no-flow boundaries (i.e., impermeable; for example the bottom of the dam ...

  4. Hydrological transport model - Wikipedia

    en.wikipedia.org/wiki/Hydrological_transport_model

    The DSSAM Model is constructed to allow dynamic decay of most pollutants; for example, total nitrogen and phosphorus are allowed to be consumed by benthic algae in each time step, and the algal communities are given a separate population dynamic in each river reach (e.g. based upon river temperature).

  5. Hydrological model - Wikipedia

    en.wikipedia.org/wiki/Hydrological_model

    Example 2. Instead of using a series of linear reservoirs, also the model of a non-linear reservoir can be used. [39] In such a model the constant K in the above equation, that may also be called reaction factor, needs to be replaced by another symbol, say α (Alpha), to indicate the dependence of this factor on storage (S) and discharge (q).

  6. Rating curve - Wikipedia

    en.wikipedia.org/wiki/Rating_curve

    If G represents stage for discharge Q, then the relationship between G and Q can possibly be approximated with an equation: Q = C r ( G − a ) β {\displaystyle Q=C_{r}(G-a)^{\beta }} where C r {\displaystyle C_{r}} and β {\displaystyle \beta } are rating curve constants, and a {\displaystyle a} is a constant which represents the gauge ...

  7. HEC-RAS - Wikipedia

    en.wikipedia.org/wiki/HEC-RAS

    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 ...

  8. Stream power - Wikipedia

    en.wikipedia.org/wiki/Stream_power

    Stream power, originally derived by R. A. Bagnold in the 1960s, is the amount of energy the water in a river or stream is exerting on the sides and bottom of the river. [1] Stream power is the result of multiplying the density of the water, the acceleration of the water due to gravity, the volume of water flowing through the river, and the ...

  9. Runoff model (reservoir) - Wikipedia

    en.wikipedia.org/wiki/Runoff_model_(reservoir)

    The program also contains an example of the hydrograph of an agricultural subsurface drainage system for which the value of A can be obtained from the system's characteristics. [ 9 ] Raven is a robust and flexible hydrological modelling framework, designed for application to challenging hydrological problems in academia and practice.

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    work of a river diagram calculator example equation maker 2 tools 4 free