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Hydrologi Risk
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Hydrologic Risk program allows the
determination of the Hydrologic and
Hydraulic risk in a basin or courses
confluent to a main river trunk.
The characteristics of the discrete
elements (basin, course etc.) in
terms of affluence and effluence
quantitively and temporally can be
determined and thereby the flood
flow rate of segments under
consideration is derived.
• Import scaled raster image.
• Basin’s and river courses’
definition on raster images.
• Calculation of 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.
• Computatinal 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.
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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 closuress that it is intended to examine.
Rainfall data processing
For each delimited section the program returns basin
area, average basin depth, average slope of main
trunk, main trunk length, and its average level
drop, etc. The user may chose to alter any of the
calculated data and also fix it against any later
recalculation
For every basin bounded by a delimiting closures the
program calculates: the average runoff coefficient
with Kennessey’s method and it’s 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 McSparrans method.
Sections' verification
Hydraulic verifications of delimited sections can be
performed both 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 points
along the flow shows the overflow extent for each of
the given extreme event flow rate 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.
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