Geospatial Assessment of Groundwater Potential Zones in the Oke-Ogun Region, Oyo State, Nigeria

Daniel Abiodun Akintunde-Alo; Simeon Oluwatobi Adeleke

doi:10.48123/rsgis.1729271

TR EN

Nijerya'nın Oyo Eyaleti, Oke-Ogun Bölgesi'ndeki Yeraltı Suyu Potansiyel Bölgelerinin Mekansal Değerlendirmesi

Öz

Değişen yağış düzenleri karşısında yeraltı suyu, özellikle tarımsal üretimin hayati önem taşıdığı Nijerya’nın Oke-Ogun bölgesinde ekonomik büyüme ve gıda güvenliği açısından kritik bir kaynak haline gelmiştir. Bu çalışma, Coğrafi Bilgi Sistemleri (CBS), Uzaktan Algılama (UA) ve Analitik Hiyerarşi Süreci (AHP) ile Çoklu Etki Faktörü (MIF) olmak üzere iki Çok Kriterli Karar Analizi (ÇKKA) tekniğini entegre ederek bölgedeki yeraltı suyu potansiyel bölgelerini (YSPB) belirlemektedir. Yağış, eğim, yükselti, jeoloji, toprak dokusu, arazi örtüsü, drenaj yoğunluğu ve çizgisellik yoğunluğu olmak üzere sekiz etki faktörü analiz edilmiştir. Tematik katmanlar ArcMap 10.8’de ağırlıklı çakıştırma analizi ile entegre edilerek çok düşükten çok yükseğe beş sınıfa ayrılan nihai YSPB haritaları oluşturulmuştur. MIF tabanlı haritada, çok düşük ve düşük potansiyel alanlar çalışma alanının %30,91’ini (4.653,02 km²) oluştururken, orta ve çok yüksek potansiyel alanlar %69,09’unu (10.404,57 km²) kapsamaktadır. AHP tabanlı haritada ise çok düşük ve düşük potansiyel alanlar %22,75 (3.425,61 km²), orta ile çok yüksek potansiyel alanlar ise %77,24 (11.631,98 km²) olarak belirlenmiştir. Otuz sondaj noktası ve Alıcı İşlem Karakteristiği (ROC) analizi ile yapılan doğrulamada, AHP modelinin MIF modeline kıyasla daha yüksek tahmin doğruluğu gösterdiği ortaya konmuştur. Bulgular, temel kayaç kompleksi alanlarında yeraltı suyu değerlendirmesi için CBS-ÇKKA yaklaşımlarının etkinliğini doğrulamakta ve gelecekteki yeraltı suyu arama çalışmaları için temel harita niteliği taşımaktadır.

Anahtar Kelimeler

Yeraltı suyu, Sürdürülebilir yönetim, Tarım, Ormancılık, CBS

Geospatial Assessment of Groundwater Potential Zones in the Oke-Ogun Region, Oyo State, Nigeria

Öz

Groundwater has become a critical resource for economic growth and food security amid changing rainfall patterns, particularly in the Oke-Ogun region of Nigeria, where agricultural output is vital. This study delineates groundwater potential zones (GWPZs) in the area by integrating Geographic Information Systems (GIS), Remote Sensing (RS), and two Multi-Criteria Decision-Making Analysis (MCDA) techniques: Analytical Hierarchy Process (AHP) and Multi-Influence Factor (MIF). Eight influencing factors—rainfall, slope, elevation, geology, soil texture, land cover, drainage density, and lineament density—were analyzed. Weighted overlay analysis in ArcMap 10.8 was used to integrate thematic layers and generate final GWPZ maps, classified into five categories from very low to very high. The MIF-based map showed that very low to low potential zones cover 30.91% (4,653.02 km²) of the study area, while moderate to very high zones cover 69.09% (10,404.57 km²). For the AHP-based map, 22.75% (3,425.61 km²) fell into very low to low categories, and 77.24% (11,631.98 km²) into moderate to very high categories. Validation using thirty borehole locations and Receiver Operating Characteristics (ROC) curve analysis revealed that the AHP model demonstrated superior predictive accuracy. The findings confirm the effectiveness of GIS-MCDA approaches for groundwater assessment in basement complex terrains, providing a valuable basemap for future exploration.

Anahtar Kelimeler

Groundwater, Sustainable management, Agriculture, Forestry, GIS

Kaynakça

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Coğrafi Bilgi Sistemleri ve Mekansal Veri Modelleme, Fotogrametri ve Uzaktan Algılama

Bölüm

Araştırma Makalesi

Yazarlar

Daniel Abiodun Akintunde-Alo Bu kişi benim
0000-0002-0612-3007
Nigeria

Simeon Oluwatobi Adeleke ^*
0009-0008-1799-0166
Nigeria

Yayımlanma Tarihi

26 Mart 2026

Gönderilme Tarihi

28 Haziran 2025

Kabul Tarihi

20 Şubat 2026

Yayımlandığı Sayı

Yıl 2026 Cilt: 7 Sayı: 1

DOI

https://doi.org/10.48123/rsgis.1729271

IZ

https://izlik.org/JA77SZ29CF

APA

Akintunde-Alo, D. A., & Adeleke, S. O. (2026). Geospatial Assessment of Groundwater Potential Zones in the Oke-Ogun Region, Oyo State, Nigeria. Türk Uzaktan Algılama ve CBS Dergisi, 7(1), 56-75. https://doi.org/10.48123/rsgis.1729271

AMA

1.Akintunde-Alo DA, Adeleke SO. Geospatial Assessment of Groundwater Potential Zones in the Oke-Ogun Region, Oyo State, Nigeria. Turk J Remote Sens GIS. 2026;7(1):56-75. doi:10.48123/rsgis.1729271

Chicago

Akintunde-Alo, Daniel Abiodun, ve Simeon Oluwatobi Adeleke. 2026. “Geospatial Assessment of Groundwater Potential Zones in the Oke-Ogun Region, Oyo State, Nigeria”. Türk Uzaktan Algılama ve CBS Dergisi 7 (1): 56-75. https://doi.org/10.48123/rsgis.1729271.

EndNote

Akintunde-Alo DA, Adeleke SO (01 Mart 2026) Geospatial Assessment of Groundwater Potential Zones in the Oke-Ogun Region, Oyo State, Nigeria. Türk Uzaktan Algılama ve CBS Dergisi 7 1 56–75.

IEEE

[1]D. A. Akintunde-Alo ve S. O. Adeleke, “Geospatial Assessment of Groundwater Potential Zones in the Oke-Ogun Region, Oyo State, Nigeria”, Turk J Remote Sens GIS, c. 7, sy 1, ss. 56–75, Mar. 2026, doi: 10.48123/rsgis.1729271.

ISNAD

Akintunde-Alo, Daniel Abiodun - Adeleke, Simeon Oluwatobi. “Geospatial Assessment of Groundwater Potential Zones in the Oke-Ogun Region, Oyo State, Nigeria”. Türk Uzaktan Algılama ve CBS Dergisi 7/1 (01 Mart 2026): 56-75. https://doi.org/10.48123/rsgis.1729271.

JAMA

1.Akintunde-Alo DA, Adeleke SO. Geospatial Assessment of Groundwater Potential Zones in the Oke-Ogun Region, Oyo State, Nigeria. Turk J Remote Sens GIS. 2026;7:56–75.

MLA

Akintunde-Alo, Daniel Abiodun, ve Simeon Oluwatobi Adeleke. “Geospatial Assessment of Groundwater Potential Zones in the Oke-Ogun Region, Oyo State, Nigeria”. Türk Uzaktan Algılama ve CBS Dergisi, c. 7, sy 1, Mart 2026, ss. 56-75, doi:10.48123/rsgis.1729271.

Vancouver

1.Daniel Abiodun Akintunde-Alo, Simeon Oluwatobi Adeleke. Geospatial Assessment of Groundwater Potential Zones in the Oke-Ogun Region, Oyo State, Nigeria. Turk J Remote Sens GIS. 01 Mart 2026;7(1):56-75. doi:10.48123/rsgis.1729271

Turkish Journal of Remote Sensing and GIS (Türk Uzaktan Algılama ve CBS Dergisi), Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License ile lisanlanmıştır.

Nijerya'nın Oyo Eyaleti, Oke-Ogun Bölgesi'ndeki Yeraltı Suyu Potansiyel Bölgelerinin Mekansal Değerlendirmesi

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Geospatial Assessment of Groundwater Potential Zones in the Oke-Ogun Region, Oyo State, Nigeria

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