Unique tool for recession curves analysis of springs and rivers. The program allows you to quickly separate individual recession curves from a hydrograph, and then analyze the individual recession curves or the master recession curve. To assemble the master recession curve, you can use a manual method or the new method based on a hybrid genetic algorithm.

License: Freeware

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RC tool is prepared for complex processing of recession curves analysis. Into the program can be imported daily or weekly types of time-series (river discharges or spring yields and daily precipitations).

input data window

Using multiple tools you can select from input data individual recession curves. In program are prepared features for automatic synchronization and display of discharges and precipitation in one chart. Recession curves you can select automatically or also manually.

recession curve selection

After recession curves selection, they can be edited, deleted or analysed by other automated / manual tools and procedures.

If recession curves are prepared, you can continue to analyzing them. The program allows you to analyse individual recession curves or create and analyse the master recession curve.

master reccession curve

For the analysis of recession curves you can use 13 recession models:

  • Linear reservoir
  • Horton double exponential model
  • Coutagne model
  • Padilla model
  • Channel storage banks
  • Exponential reservoir
  • Dupuit-Boussinesq aquifer storage model
  • Depression storage / Detention storage
  • Cavern storage
  • Hyperbola reservoir
  • Constant reservoir
  • Turbulent model
  • Hyperbolic model

With these individual recession models is possible to create superposition, thanks that you can analyse the runoff from really variable natural conditions. The program allows you to export all results in table or graphical form.

For master recession curve assembling you can use two procedures. The first is the assembling by manual procedure. Into window are imported all recession curves and user then manually moves then on time-line until individual recession curves creates one coherent master recession curve.

Another way is to use a new (unique) algorithm, which was developed for this purpose and use a combination of strongly hybridized genetic algorithm and the method of artificial immune system. This algorithm can be used to assembling the master recession curve from a small number recession curves, recession curves from difficult drainage conditions, with inaccurate measurements, from segments of recession curves or from recession curves affected by hydrological and meteorological regime.

master recession curve assembling