Hydrological elaborations – Runoff Lab

390.00 exc. VAT

(1 customer review)

Runoff Lab is a calculation and analysis tool aimed at professionals who have to deal with hydrological computations.

Runoff Lab makes elaborations such as probabilistic interpretation of pluviometric series, calculation of pluviometric probability curves, definition of synthetic pluviograms, and inflow-deflow transformation extremely simple and intuitive.

The attention given to the design of the user interface allows for an extremely intuitive and easy-to-use program: the use of tree navigation menus, the assignment of relationships between entities by simple drag-and-drop operations, the Copy/Paste of created entities, and the unlimited Undo/Redo series are just some of the features that allow for a high learning curve in the use of the software.


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Probabilistic Analysis
Runoff Lab implements both the probabilistic distribution of extreme values EV1 (Gumbel) and the two-component model (TCEV).
For parameter estimation of the Gumbel distribution, both the method of moments and the maximum likelihood method are available.
For the TCEV model, both point estimates and regional and mixed estimates are available, with different levels of regionalization defined for this distribution. Regional parameters can be directly entered by the user or come from the database provided with the application, in which values are pre-entered for the different zones of the Italian territory as defined by VA.PI reports.

Pluviomentric probability curves
The calculation of the pluviometric probability curve is carried out automatically by the program, once the return period is fixed, from probabilistic processing. In addition to this mode of operation, it is possible to directly enter the coefficients of the pluviometric probability curve or the points (duration, rainfall height) that you want to interpolate through the curve.

The input rainfall for the inflow-deflows transformation model can be either a synthetic design pluviogram or an observed pluviogram, thus allowing the reconstruction of actual events. In the former case, the pluviogram is defined by fixing its total duration, discretization interval and peak location, chosen from predefined types or freely entered by the user.

Inflow-deflows transformation
The simulation of flood outflows on natural basins is addressed by means of the SCS-CN hydrological model, proposed by the Soil Conservation Service, which can simulate surface runoff at assigned precipitation.
Regarding the inflow-deflow transformation, the process is addressed by decomposing it into two steps, concerning the determination of net precipitation and the transformation of net precipitation into surface runoff.
Net precipitation is calculated by the Curve Number (CN) method, proposed by the SCS, as a function of the CN index between 0 and 100, which is a function of soil type, land use and antecedent moisture conditions.
The inflow-deflow transformation is obtained by convolution integral, starting from the net pluviogram and the SCS UHI.
The program makes it possible to obtain the resulting hydrogram in real-time, with an indication of the maximum flow rate of the peak time, the total duration of the event of the volumes inflowed and outflowed, the efflux coefficient and the udometric coefficient. It is also possible to have immediate visual feedback on the sensitivity of the various parameters involved in the calculation by observing the variations in the hydrogram graph as the parameters themselves change.









1 review for Hydrological elaborations – Runoff Lab

  1. Claudio Monteverde (verified owner)

    Prodotto software valido per le elaborazioni idrologiche. Lo utilizzo spesso questo prodotto.

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