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İhsan TAŞKIN (1) Önder YAZICI (1) Müfit Şefik DOĞDU (2)

Water Storage in Spring Reservoir by Changing Spring Discharge Level. İhsan TAŞKIN (1) Önder YAZICI (1) Müfit Şefik DOĞDU (2). (1) Retired from 13 th Regional Directorate of State Hydraulic Works (DSİ)-Antalya -TURKEY (2) General Directorate of State Hydraulic Works (DSİ)-Ankara -TURKEY.

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İhsan TAŞKIN (1) Önder YAZICI (1) Müfit Şefik DOĞDU (2)

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  1. Water Storage in Spring Reservoir by Changing Spring Discharge Level İhsan TAŞKIN(1) Önder YAZICI(1) Müfit Şefik DOĞDU(2) (1) Retired from 13th Regional Directorate of State Hydraulic Works (DSİ)-Antalya-TURKEY (2) General Directorate of State Hydraulic Works (DSİ)-Ankara-TURKEY

  2. Water Storage in Spring Reservoir by Changing Spring Discharge Level • Presentation Plan: • Location and geological map of the area • Spring classification • Spring discharge usage for drinking & irrigation water • Artificial dynamic reserve after barrier construction • Spring discharge & groundwater level changing • Changing in dynamic reserve of spring after barrier construction • Advantages of the system • Comparison of the structures

  3. Location & geological map of the area 1/9

  4. Same Below Above Spring Classification Springs have been evaluated according to the aquifer base (aquifer geometry) which is located below, same or above level of the spring discharge elevation. 2/9

  5. Spring discharge usage for drinking & irrigation Spring is planned according to the minimum (and constant) spring discharge amount for drinking water purposes. Spring water is used for irrigation in between June & September.In other words, 2/3 of spring water is unused. 3/9

  6. Artificial dynamic reserve after barrier construction & raising of the spring discharge elevation Artificial dynamic reserve Aquifer reservoir base is below discharge level In this type of aquifer artificial dynamic reserve is plentiful. 4/9

  7. Natural Condition After barrier construction, raising of the spring discharge elevation & lowering of the discharge level Spring Barrier Water usage Aquifer reservoir base is below discharge level Aim of this system is storing of the water in the wet period and using of this stored water in the dry period. 5/9

  8. Spring discharge & groundwater level changing Spring discharge & groundwater level changing are harmonize with each other. Average dynamic reserve changing per 1 m drawdown: Vs = 1.987 x 106 m3/m 6/9

  9. Changing in dynamic reserve amount of spring after barrier construction & raising of the spring discharge elevation Dh = 2.54 m, Vs = 1.987 x 106 m3/m  DV = Dh x Vs  DV = 5.05 x 106 m3 DV : changing in dynamic reserve of spring Dh : changing in observation well’s water level Vs : unit dynamic reserve changing per unit level changing 7/9

  10. Advantages of the system: • Low construction cost • Low construction time • No need for nationalization purchase • No evaporation loss • Very low dissipation of the source (very low usage of natural construction materials & land use) • Useful for flood protection 8/9

  11. Comparison of the structures 9/9

  12. General Directorate of State Hydraulic Works (DSİ) Ankara - TURKEY Thank you for your attention…

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