Hydrology and hydraulics-Hydrologic Risk

Description

Hydrology software for the determination of hydrologic and hydraulic risk in a basin.

FEATURES

• • Import scaled raster image;
  • Basin’s and river courses’ definitions on raster images;
  • Calculating area, average heights (from the DEM’S model hypsographic curve), basin slope, etc.;
  • Kennessey’s runoff coefficient (1930);
  • Hydrologic balance;
  • Rainfall data processing;
  • Insertion of any number of delimiting closures;
  • Evaluation of maximum flood flow rate with kinematic and statistical methods;
  • Flood hydrogram;
  • Hydraulic verification for every closure section in permanent or uniform motion states;
  • Overflow map generation;
  • A computational report in RTF format;
  • Kennessey’s runoff coefficient (1930);
  • Runoff coefficient computation as a function of vegetal, topographic, permeability and climate characteristics of the area under consideration.
    

DATA ENTRY

The program’s data entry is simple and user-friendly.

It is merely necessary to import a raster image of the territory, circumscribe the hydrographic basin within it and trace the water courses and the delimiting closures it is intended to examine.

RAINFALL DATA PROCESSING

For each delimited section, the program returns the basin area, average basin depth, the average slope of the main trunk, main trunk length, and its average level drop, etc.

The user may alter any of the calculated data and fix it against any later recalculation.

For every basin bounded by delimiting closures, the program calculates the average runoff coefficient with Kennessey’s method, and its hydrologic balance by determining evapotranspiration water loss.

Rainfall data computation is done with Gumbel’s method.

MAXIMUM FLOOD FLOW RATE

Maximum flood flow rates are calculated with pluviometric and statistic (rational, TCEV –two-component extreme value distr.).

Additionally, for each delimited closure, it is possible to build the dynamic of the flood wave using Nash’s or McSparran’s method.

SECTIONS VERIFICATION

Hydraulic verifications of delimited sections can be performed in uniform and permanent motion states.

OVERFLOW MAP GENERATION

The target output is a map of the basin showing the main flow trunk and at each predetermined point along the flow shows the overflow extent for each of the given extreme event flow rates and joins with a line, coloured as required, the outer extents at each point for the same events (thus creating the outline of the expected flow for that event).

OUTPUT

The program generates a computation report that can be fully personalised; All the graphics can be exported in the following formats: DXF, PDF, WMF or Bitmap.