Presentation on the Hydrological Activities in Turkey Hamza OZGULER State Hydraulic Works Ankara, Turkey

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Presentation on the Hydrological Activities in
Turkey Hamza OZGULERState Hydraulic Works
Ankara, Turkey
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DSI serves in four sectors
http//www.dsi.gov.tr
SERVICES
ENVIRONMENT
ENERGY
AGRICULTURE
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DSI's involvements in water resources of the
Country
management
planning
assessment
observations
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climate and water

• climate
• semi-arid
• shows high differences both
• regionally
• seasonally
• water resources
• 26 major basins
• mean annual precipitation 642,6 mm
• mean annual volume of precipitation 501,0 km3
• total usable water potential 110,0 km3

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the distribution of 6-hour rainfall
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main causes of floods in Turkey

• floods in Turkey generally occur because of
• heavy rainfall on the costal areas of the
  northern, southern and western parts of Anatolia
• a sudden increase in air temperature,
  resulting in snow melt in the eastern and
  mountainous part of southeastern Anatolia

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number of floods is getting more
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flood losses is increasing both in frequency and
amount..

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seasonal distribution of floods

• 51 of all the floods occur in the months
  April, May, June and July.
• the ratio of number of floods in the spring and
  summer seasons to the number for all year is 66
  .
• most of the summer floods are seen in the month
  of June.

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1999, Izmir
1998, Bartin
2000, Istanbul
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hazard mitigation approach

• flooding events of the last decade, with their
  costly
• results have brought Turkey to a new view-point
  to
• reduce and control the susceptibility to the
  flood
• damages, namely the "Hazard Mitigation Approach
• structural measures
• non-structural measures
• a sound underwriting for flood insurance
• an early warning system

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TEFER (Turkey Emergency Flood and
Earthquake Recovery) Project
real time hydrometric data
hydrologic organization (DSI)
flood watch
radar weather data
meteorological organization (DMI)
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TEFER Project
(TURKSAT)
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• TEFER project will support the installation
  of
• 129 automatic real-time hydrometric,
• 206 automatic real-time meteorological and
• 3 radar stations (Doppler)
• in the first phase,
• so that real-time data will be available in
  order to run the operational flood forecasting
  models.

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coverage area
(I. Phase 1999 - 2004)
(II. Phase 2004 - 2008)