This article was automatically translated from the original Turkish version.
Melen Çayı is one of the significant rivers in Türkiye’s Black Sea Region, flowing along the borders of Düzce and Sakarya provinces before emptying into the Black Sea. This river, a defining element of the region’s hydrological structure, lies within the Melen Basin and forms a vital water system affecting surrounding settlements and natural areas.
Melen Çayı originates within the boundaries of Düzce province and flows northward, passing through Sakarya province before reaching the Black Sea. In certain sections, the river serves as a natural boundary between Düzce and Sakarya. The Melen Basin encompasses a large drainage area fed by various streams and smaller rivers. The basin reflects the characteristic features of the Black Sea Region, particularly in terms of precipitation patterns and topography. Forested areas in the region play a crucial role in preserving water resources and maintaining ecological balance.

Melen Çayı (Anadolu Ajansı)
The area surrounding Melen Çayı features a distinctive natural landscape marked by dense vegetation and forested zones. Tree communities along the river exhibit pronounced seasonal color changes. In autumn, the foliage turns shades of yellow, orange and brown, significantly enhancing the region’s natural appearance. The natural areas along the river are important for both ecological diversity and landscape value. These areas also provide suitable environments for various recreational activities.
Melen Çayı is known as one of the rivers in Türkiye where rafting is practiced. The routes near Cumayeri district and Dokuzdeğirmen village in Düzce offer favorable flow conditions for rafting.
Rafting tours organized in the region cater to participants with varying levels of experience. These activities are especially concentrated during the summer months, attracting visitors from various provinces. Rafting events contribute significantly to the development of tourism and recreation in the area.

Rafting on Melen Çayı (Anadolu Ajansı)
Periodic flooding can occur in the Melen Çayı basin due to heavy rainfall. This poses risks to nearby settlements and agricultural lands.
To mitigate flood risks, various management and conservation projects have been planned for the Melen Çayı and Efteni Lake basins. These initiatives aim to reduce the impact of flooding and improve the effectiveness of basin management.
Melen Çayı and its basin have been the subject of various academic studies in the fields of hydrology, environmental science, and geography. These studies examine the basin’s water resources, environmental characteristics, and its relationship with human activities.
The river system is regarded as an important research area in terms of regional water management, environmental sustainability, and the conservation of natural resources.【1】
[1]
Yaşar Akkaya, ''MELEN ÇAYI HAVZASI’NIN COĞRAFİ POTANSİYELİ VE SÜRDÜRÜLEBİLİRLİLİK AÇISINDAN HAVZA YÖNETİMİ,'' Doktora Tezi, İstanbul Üniversitesi, 2019. 18. https://nek.istanbul.edu.tr/ekos/TEZ/ET001493.pdf
Geographical Location and Basin Characteristics
Natural Environment and Landscape
Tourism and Recreational Activities
Floods and Basin Management
Scientific Research