Erhan Akkuzu

Impact of Irrigation Management Transfer on Land and Water Productivity and Water Supply in the Gediz Basin, Turkey

In the 1990s, Turkey started a fast transfer program in which a large proportion of government-managed irrigation systems were put into the hands of Water Users’ Associations (WUAs) in a very short space of time. One of the first systems to be handed over was the Gediz Basin. This study aims to set out the effects of the transfer of irrigation management in this basin on water and land productivity and water supply. For this purpose, the indicators of productivity and water supply proposed by the International Water Management Institute have been used to show changes between the pretransfer, transfer, and post-transfer periods. WUA averages for the post-transfer period calculated from the results ranged

Usefulness of Empirical Equations in Assessing Canal Losses through Seepage in Concrete-Lined Canal

2,076–

Erratum for “Usefulness of Empirical Equations in Assessing Canal Losses through Seepage in Concrete-Lined Canal” by Erhan Akkuzu

2,898  ha−1 for output per command area,

Aşağı Gediz Sulama Sisteminde Ana Kanal Hidrolik Parametrelerinin Zamansal Değişiminin Su Dağıtım Kapasitesi Üzerine Etkisinin Belirlenmesi

2,747–

Using satellite remote sensing to assess irrigation performance in Water User Associations in the Lower Gediz Basin, Turkey

4,585  ha−1 for output per irrigated area,

Performance of water delivery system at tertiary canal level: a case study of the Menemen Left Bank Irrigation System, Gediz Basin, Turkey

0.26–

Determination of Water Conveyance Loss in the Menemen Open Canal Irrigation Network

0.68  m−3 for output per irrigation supply,

General Irrigation Planning Performance of Water User Associations in the Gediz Basin in Turkey

0.30–

Diurnal Variation of Canopy Temperature Differences and Leaf Water Potential of Field-Grown Olive (Olea europaea L. cv. Memecik) Trees

0.63  m−3 for output per unit water consumed, 0.88–1.49 for relative water supply, and 0.99–1.99 for relative irrigation supply. During the period ev...

Determination of Crop Water Stress Index and Irrigation Timing on Olive Trees Using a Handheld Infrared Thermometer

AbstractThe correct estimation of conveyance water losses from an irrigation system is vital for the proper management for the system. Seepage is the most dominant process by which water is lost in the canal. Thus, for the effective operational planning and management of an irrigation system, a dependable forecasting of the seepage is very important. Seepage rates are obtainable either by direct measurement or by estimation. This study investigated the usefulness of the equations of Moritz and Davis-Wilson in estimating the seepage losses of concrete-lined canals. Seepage losses of the concrete-lined trapezoid canals of the Menemen irrigation system at the end of the Gediz basin were measured by the inflow-outflow method and the results were compared with the estimates of seepage losses given by the use of these two equations. Average seepage losses were measured as 107.6  l s-1 km-1 for the main canal, 32.1  l s-1 100  m-1 for the secondary canals, and 11.7  l s-1  100  m-1 for the tertiary canals. Stand...