1 / 61

Sustainable Water Management in the Gediz River Basin

Explore water resource optimization for the Gediz River in Turkey. Analyze challenges, demographics, demand, and stakeholder contributions for sustainable management.

thartl
Download Presentation

Sustainable Water Management in the Gediz River Basin

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. OPTIMAOptimisation for Sustainable Water Resources Management The Case of the Gediz River in Turkey 11-12 November 2005 Casablanca

  2. Population:1.700.000 Istanbul Extent:18000 km2 Gediz Basin Izmir Water Supply: 1100 MCM647 m3 per capita Water Demand: 886 MCM521 m3 per capita

  3. Boundaries and Municipalities Akhisar Saruhanli Manisa Golmarmara Menemen Turgutlu Salihli Ahmetli Alasehir Kemalpasa IZMIR

  4. LAKES, RESERVOIRS and WEIRS

  5. KEY ISSUES Demographic Change Basin Population 1,5 % /year 19702000 “1.100.000” “1.700.000” INTERNAL MIGRATION RURAL TO URBAN: RAPID URBANIZATION Urban population 2% /year Rural population 0.7% /year Land Use Change • Urban Areas 2% /year • Industrial Areas 10% /year INCREASING WATER DEMAND: COMPETITION AMONG USERS

  6. KEY ISSUES Supply (61mm)Demand (49.6mm) • Domestic demand0.15 mm/year,2% • Industrial demand0.3 mm/year,10% “NO WATER MAY BE LEFT FOR FURTHER ALLOCATION!”

  7. Discharges W. Q. CLASS IV (acc. Turkish W.Q.C. Standards) Water Quality 60% of Surface Water 30% of Ground Water “VERY POLLUTED!!”

  8. SUMER CONTRIBUTION IN OPTIMA PROJECT C07 SUMER, TURKEY SUMER will contribute to; • the data compilation and analysis tasks, primarily for the hydrology andwater resources components, • assist with model implementation, • run the Turkish case study forthe Gediz river basin.

  9. SUMER CONTRIBUTION IN OPTIMA PROJECT Gediz Case Study: Start month:12 End month: 30 Total effort: 34 Deliverables: D08.1: Gediz River: Problem Analysis Month: 25 D08.2: Gediz River: Optimization Results Month: 34

  10. CONTRIBUTION TO STAKEHOLDERS DB

  11. CONTRIBUTION TO STAKEHOLDERS DB

  12. WP05 LAND USE CHANGE: REMOTE SENSING AND GIS DATA DEM SOIL MAP RIVER LAND COVER

  13. WP05 LAND USE CHANGE: REMOTE SENSING AND GIS DATA METEO FLOW by DSI FLOW by EIE

  14. WP05 LAND USE CHANGE: REMOTE SENSING AND GIS DATA ~30m spatial resolution Landsat TM (1987) ~30m spatial resolution Landsat ETM (2000)

  15. WATERWARE STUDIES Topology is reviewed and updated Settlements are included Domestic water demands are added Groundwater extractions from wells for domestic demand are included Demand and release time series of reservoirs and irrigation districts are re-evaluated River Basin Object entry and editing is in progress Water quality data (BOD loads) of settlements and industrial districts are compiled The producer (farmers) selling prices of crops and their yields are compiled

  16. Gordes Tributary Afsar Buldan Demirkopru Adala Irrig. Alasehir Irrig. Marmara Lake Ahmetli Irrig. Kumcay Tributary Nif Tributary Wetland Menemen Irrig. Bay of Izmir Topological View of the Previous Baseline Gediz Scenario

  17. Gordes Tributary Buldan Afsar Demirkopru Adala Irrig. Alasehir Irrig. Marmara Lake Ahmetli Irrig. Nif Tributary Kumcay Tributary Wetland Menemen Irrig. Bay of Izmir Topological View of the Recent Baseline Gediz Scenario

  18. WATERWARE STUDIES River Basin Objects Reservoirs: 1) Demirkopru: supplies irrigation water, flood prevention, energy production during the irrigation season. 2) Afsar: provides irrigation water to Alasehir lowlands. 3) Buldan: provides irrigation water to Alasehir lowlands. 4) Marmara Lake 5) Gordes (under construction): supplies domestic water for the city of Izmir in addition to providing irrigation water within the basin. 6) Yigitler (under construction): supplies industrial water for the industrial district of Kemalpasa.

  19. RESERVOIRS BULDAN AFSAR DEMIRKOPRU GORDES? MARMARA YIGITLER? Bay of Izmir

  20. Data on Reservoir Characteristics

  21. River Basin Objects Industrial Districts: • Manisa Ind. Zone • Kemalpasa Ind. Zone • Memenen Leather Ind. Diversions: • Adala Weir • Ahmetli Weir • Emiralem Weir • Buldan Weir • Comlekci Weir Irrigation Districts : 1) Adala Left Bank 2) Adala Right Bank 3) Ahmetli Left Bank 4) Ahmetli Right Bank 5) Menemen Left Bank 6) Menemen Right Bank 7) Sarigol 8) Alasehir Wetland: • Izmir Bird Paradise

  22. IRRIG. DISTRICTS,WEIRS,IND. ZONES and WETLAND Adala Alasehir Irrig. Adala Irrig. Comlekci Ahmetli Ahmetli Irrig. Kemalpasa Ind. Zone Manisa Org. Ind. Zone Emiralem Wetland Menemen Leather Ind. Menemen Irrig. Bay of Izmir

  23. Yields and Average Farmer’s Prices of Crops No data is available for BOD loads of irrig. return flows Source: Menemen Agr. Hydr. Center

  24. Daily BOD Loads of Industrial Discharges Source: Nen Eng.&Cons., December 2001

  25. River Basin Objects Subcatchments: • Demirkopru Upstream • Buldan Upstream • Afsar Upstream • Medar • Nif • Gordes • Yigitler Settlements : 1) Manisa (Gov. Centre) 2) Akhisar 3) Salihli 4) Turgutlu 5) Kemalpasa 6) Menemen 7) Saruhanli 8) Alasehir 9) Izmir 10) Golmarmara 11) Ahmetli Aquifers: • Salihli-Turgutlu • Menemen • Sarikiz • Alasehir

  26. SUBCATCHMENTS and SETTLEMENTS Buldan Deliinis Afsar Gordes Alasehir Salihli Golmarmara Medar Yigitler Ahmetli Akhisar Nif Saruhanli Turgutlu Kemalpasa Menemen Bay of Izmir

  27. Domestic Demand of Settlements ** Values from Bank of Provinces

  28. BOD Loads of Domestic Returns of Settlements Source: Nen Eng.&Cons., December 2001

  29. The aquifers identified in WaterWare (WRM) and their parameters.

  30. GROUNDWATER:AQUIFERS IDENTIFIED Groundwater coupling? Sarikiz Menemen Salihli_Turgutlu Alasehir

  31. Subcatchments Outflow TS The year of TS is 1991 Observed stream gauging station data are used Some small subcatchments are taken into account like lateral inflows to the reaches (Sarma, Taytan, Tabak) For Buldan and Afsar Subcatchments the observed inflows to the reservoirs are used, BUT there is some inconsistencies, hence those subcatchments may be re-evaluated with RRM

  32. WaterWare Modeling Studies

  33. Summary of the Existing Situation and Ongoing Trends in the Gediz Basin In the Gediz Basin, there are: • agricultural, • domestic • industrial activities which supply their water needs directly from surface waters and thegroundwater system

  34. Summary of the Existing Situation and Ongoing Trends in the Gediz Basin Irrigation : The major consumptive water use in the Gediz is irrigation, realized in four major districts. In addition, a downstream wetland called the “Bird Paradise” is also connected to the Menemen Left Bank irrigation scheme. The intensive irrigation activities in the basin are supported by three reservoirs and a set of weirs which divert the flow to irrigation channels. On the other hand, there are also many wells exploiting the groundwater either under normal conditions for small irrigation systems or in cases of emergency like droughts .

  35. Summary of the Existing Situation and Ongoing Trends in the Gediz Basin Irrigation : The irrigation schemes are operated on open channel conveyance systems. Most of the farmers prefer “flooding” methods for irrigation at the field. The dominant crop pattern in irrigation districts is cotton, table grapes and maize; however, their percentage with respect to irrigated areas changes every year, depending on the income expected by farmers.

  36. Summary of the Existing Situation and Ongoing Trends in the Gediz Basin Domestic and Industrial Water Use: Domestic and industrial demands in the Gediz Basin are generally met through groundwater sources. All the municipalities in the basin supply their domestic water through groundwater, thereby putting these resources under stress. There are also three major industrial districts, nearby Manisa, Menemen and Kemalpasa municipalities,supplying their demand by groundwater. Unfortunately, their consumption rates and fixed costs for pumping are not monitored and recorded; only rough estimates are available.

  37. Gediz Baseline Scenario Building and Preliminary Results of WRM

  38. Demirkopru Reservoir (Real TS of Release)

  39. Ahmetli Weir Right Bank Diversion (The expected demand TS)

  40. Ahmetli Irrg. Right Bank (The expected demand TS)

  41. Assumptions of Modeling Practice Flow TS used as input are from the year of 1991 There was limited irrigation at this year Initial storages of reservoirs and aquifers:In the baseline scenario, the initial storages of the reservoirs are selected such that they preserve almost the same amount of water at the beginning and at the end of the year, namely, at the start and at the end of a model simulation; 20%

  42. Assumptions of Modeling Practice Conveyance losses of demand nodes: No Irrigation System Change: conveyance loss: 10 % evaporation losses: 5%, return flow losses: 5%. Irrigation demand time series and reservoir releases: The daily demand time series of irrigation districts are computedby the CROPWAT(FAO) for Windows 4.3. The real release time series at that year are used

  43. Preliminary Results of WRM

More Related