Pamukkale Univ Muh Bilim Derg. Ahead of Print: PAJES-85616 | DOI: 10.5505/pajes.2023.85616

Determination of suitable sites for rainwater harvesting in Denizli Serinhisar district watershed

Onur Mehmethan ÖZBEN, Mahmud GÜNGÖR
Department of Civil Engineering, Engineering Faculty, Pamukkale University, Denizli, Turkey

In this article, the suitable sites for rainwater harvesting of the Serinhisar watershed were determined by accepting the watershed characteristics affecting the rainwater harvesting as criteria and weighting these criteria. For this purpose, a Geographical Information System (GIS) application integrated with the Analytical Hierarchy Process (AHP), which is one of the Multi-Criteria Decision Making methods, was implemented. Firstly, the watershed model was created in the GIS environment and the slope and drainage density criteria were obtained from this model. One of the criteria, the land use data, was combined with the soil class data in the GIS environment to obtain the Curve Number (CN) data. By using this CN data and watershed precipitation data, runoff data and accordingly the last criterion, the runoff potential, were obtained with the Soil Conservation Service – Curve Number (SCS-CN) Method. The criteria, which were given importance and weighted according to each other in the AHP steps by reclassification, were combined in a single map according to their weights and presented as a suitability map.

Keywords: Serinhisar District, Rainwater Harvesting, GIS, AHP, SCS-CN

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Denizli Serinhisar ilçesi havzasýnda yaðmur suyu hasadýna uygun bölgelerin belirlenmesi

Onur Mehmethan ÖZBEN, Mahmud GÜNGÖR
Ýnþaat Mühendisliði Bölümü, Mühendislik Fakültesi, Pamukkale Üniversitesi, Denizli, Türkiye

Bu makalede Serinhisar havzasýnýn yaðmur suyu hasadýna uygun bölgeleri, yaðmur suyu hasadýna etki eden havza karakteristiklerinin kriter olarak kabul edilmesi ve bu kriterlerin aðýrlýklandýrýlmasý ile tespit edilmiþtir. Bu amaçla Çok Kriterli Karar Verme yöntemlerinden biri olan Analitik Hiyerarþi Yöntemi (AHY) ile entegre Coðrafi Bilgi Sistemi (CBS) uygulamasý yapýlmýþtýr. Öncelikle CBS ortamýnda havza modeli oluþturulmuþ ve bu model üzerinden eðim ve drenaj yoðunluðu kriterleri elde edilmiþtir. Kriterlerden bir diðeri olan arazi kullaným verisi, CBS ortamýnda toprak sýnýfý verisi ile birleþtirilerek Eðri Numarasý (CN) verisi elde edilmiþtir. Bu CN verisi ve havza yaðýþ verileri kullanýlarak Toprak Koruma Hizmeti – Eðri Numarasý (SCS-CN) Yöntemi ile akýþ verileri ve buna baðlý olarak son kriter olan akýþ potansiyeli elde edilmiþtir. Yeniden sýnýflandýrma yapýlarak AHY adýmlarýnda birbirilerine göre önem katsayýsý verilen ve aðýrlýklandýrýlan kriterler, aðýrlýklarýna göre tek bir haritada birleþtirilmiþ ve uygunluk haritasý olarak sunulmuþtur.

Anahtar Kelimeler: Serinhisar Havzasý, Yaðmur Suyu Hasadý, CBS, AHY, SCS-CN

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