Hydrological modelling

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Hydrological modelling
Discharge
Maps
Rainfall
Satellites Images
Simulations, Estimations
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SIEREM PROJECT Environmental Information System
on Water Resourses and their Modelling
Meteo Data 27412 years for 342 posts
Rainfall data 70651 years for 2737 posts
Discharge data 19749 years for 891 stations
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SIEREM PROJECT Environmental Information System
on Water Resourses and their Modelling
Geological cover of Ivory Coast
Hydrographic network of Ivory Coast
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The model - Presentation of POLLEN method

• Developed by O. Gayte et al.
• Adapted from the OMT method
• Based on two principles
• Graphic representations
• Logical steps of C.D.V. system
• Conceptual modelling of data (object diagram,
  dictionary)
• Processing modelling (functional model, function
  dictionary)
• System, sub-system and reservoirs identification
  (system diagram, dictionaries ..)

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Modelling The conceptual modelling
ofchronological data
RIVER
LOCATION
DATA TYPE
UNIT
name() permanent() Order()
Latitudeinteger Longitudeinteger Elevation
integer
name() aggregation()
name() usage() decimal number()
TIME STEP
CHRONOLOGICAL SERIE
lt -flows in
MEASUREMENT STATION
nema() value()
name()
Name string
PERSON
STATION TYPE
Is located within -gt
DATA ORIGIN
name()
name() phone fax url e-mail address
COUNTRY
name() description()
name()
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Modelling The spatial data(1)
Line
Point
Polygon
L_STREAM
A_BASIN
P_PLACE
L_RIVER
Is included within -gt
Flows in -gt
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Modelling The spatial data (2)
Polygon
Polygon
Time
Grid
A_U.Pedology
Value in XY(ppoint)integer
A_U.Vegetation
U.Pedology
U. Vegetation
valeur()
DEM GTOPO30
value()
Pedology
Vegetation
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Process modelling The functional model(1)
DCWmap files
Raw hydrological file
Gather the river segments
Organised hydrological basin file
Fill the attribute tables
Data flow diagram for the process of the river
lines
Maps
basin MapInfo file
Export attribute tables of the rivers
Convert to ArcInfo format
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Process modelling The functional model (2)
GTOPO30 DEM
ArcView file
Monography
Data flow diagram for the process of basin
contours
Compare the origins
Maps
River line files
Chosen file
Fill the attribute tables
ArcView files
Export the attribute tables of rivers
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Conception System Diagram
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The database
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The developed processes

• ORION client software
• The Web interface
• The operating procedures for the process of
  spatial data

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Main ORION windows
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CONCLUSION
EIS BUILDERS MAIN AIMS

• INFORMATIONS MUST GEOREFERENCED
• INFORMATIONS MUST HAVE A DATE
• HETEROGENEOUS INFORMATIONS MUST COHABIT
• INFORMATIONS MUST BE ATTACHED TO METADATA