Keuris_HYDSTRA for Planning
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Transcript of Keuris_HYDSTRA for Planning
the dwafDEPARTMENT OF WATER AFFAIRS AND FORESTRY
A hydrological information- & data-base
HYDSTRA: Background................ • Commercial off-the-shelf product
• Originally an Australian company,
• Now merged with Kisters, Germany
• Both specialising in Hydrology
• HYDSTRA used in 22 countries
• More than 150 installations
HYDSTRA: Distribution in SA…. • DWAF Head Office 3x
• DWAF regions 12x
• DWAF laptops 10x
• KOBWA
• Namibia
• Botswana??
HYDSTRA: Supporting............... • Data Acquisition from multi-sources
• Integrated data management
• Managing long time-series
• Graphic user interfacing & editing
• Analysis, modeling & simulation
• Archiving with quick access
• Data & information dissemination
HYDSTRA: Basic Components.... • Archive Structures
• Workbench
• Displays
• Calculations & Conversions
• Data Dissemination
• Advanced Functions
HYDSTRA: Archive Structures......
• Multiple Versions of Records
• Compressed Time Series
• Database Tables
HYDSTRA: Archive Structures......
• Multiple versions of records:– Infinite number of sites
– Up to 250 variables per site
– Up to 100 versions per variable
– Can store temporary versions in other directories, on server & PC.
HYDSTRA: Archive Structures......
• Compressed Time Series:– Water levels
– Reservoir components
– DWAF evaporation and rainfall
– Weather Bureau rainfall
– Dam balances
– Comments per data item
– Up to 100 quality flags per data item
HYDSTRA: Archive Structures......
• Database Tables:
– Site details
– Ratings
– Basin surveys
– Site History
– Statistics on records
HYDSTRA: Workbench......
• Used for data editing / archiving• Functions:
– Cut and Paste– Time adjustment– Free hand drawing– Reference trace– Zoom– Edit to control readings– etc
Graphical View in Workbench
HYDSTRA: Displays...... • Customising to:
– Specify period per page/s– Combined records– Type of plot– Statistical plots– Different periods on one plot– Destination of output
HYDSTRA: Displays………. •Box and Whiskers Plot:
HYDSTRA: Conversions………. • Variable / version
• Quality codes
• Rating tables / equations
• Powerful tools for data conversion– Convert to another variable
– In a string of steps
– Define once, re-use
HYDSTRA: Dissemination…… • Many flexible retrieval options
• Define groups of stations
• Graphical / text / electronic output
• Output can be customised
• DLL for external retrieval of data
• Data on W W W - refreshed daily
HYDSTRA: Dissemination…… • Can select station numbers from:
–group
–file
–directory
–database or defined table
–combination / filters (and, or / not)
HYDSTRA: Dissemination…… • HYCSV:
–useful facility
–extract data in CSV format
–multiple columns
–with variable conversion
–open in Excel
HYDSTRA: Dissemination W W W www.dwaf.gov.za/hydrology/cgi-bin/his/cgihis.exe/station
or
On DWAF website:– HYDROLOGY: Dams Flows and Floods –Access Data (new)
HYDSTRA: Dissemination W W W
HYDSTRA: Dissemination W W W
HYDSTRA: Dissemination W W W
Mapping Interface
HYDSTRA: Advanced………… • HYCRSUM:
–combine two time series
–add, subtract, multiply or divide
–time shift
–variable conversion
–create new time series
HYDSTRA: Advanced………… HYCRSUM - Input screen
HYDSTRA: Advanced………… HYCRSUM - plot of result
HYDSTRA: Advanced………… • MODSYN:
–powerful modeling language
–based on vector algebra
–uses time series as vectors
–specify time steps
–do variable conversions
MODSYN - example script
HYDSTRA: Conclusion
• Data readily available
• Easily accessible
• Multiple formats
• Multiple media
• Powerful data manipulation
• W W W Convenience
HYDSTRA: Conclusion……
• For more information, please try:
WWW.hydstra.com
Thank You