Porsuk River is the longest tributary of the Sakarya River and one of the significant watercourses of Western Anatolia. Originating from Mount Murat, the river flows through the provinces of Kütahya and Eskişehir before merging with the Sakarya River. Porsuk River has two main branches: one passing through the Altıntaş basin, while the other feeds the river from the west of Kütahya, flowing north of the city. Additionally, as the river passes through the city center of Eskişehir, it enhances the city’s aesthetic appeal.
Flora and Fauna
The Porsuk River and its basin are located at the intersection of the Mediterranean, Euro-Siberian, and Irano-Turanian phytogeographic regions, resulting in a rich diversity of plant species. Common vegetation includes black pine (Pinus nigra), oak (Quercus spp.), and juniper (Juniperus spp.). The region also supports diverse wildlife, hosting endangered bird species such as the golden eagle (Aquila chrysaetos), vulture (Aegypius spp.), and green woodpecker (Picus viridis). As one of the key water sources in Western Anatolia, the Porsuk River Basin covers an area of 11,188 km², with an annual water potential estimated at an average of 481 hm³. The river flows through Eskişehir, Alpu, Beylikova, and Sarıköy before joining the Sakarya River.
Pollution and Environmental Issues
Porsuk River suffers from severe pollution, primarily due to domestic and industrial waste discharged from the provinces of Kütahya and Eskişehir. According to a 2001 study by the State Hydraulic Works (DSİ), the water quality at the river’s entry point in Kütahya was classified as second-grade; however, due to industrial waste from the city, it deteriorated to fourth-grade. The pollution level continues to increase as the river flows through the Eskişehir region.
Tourism and Recreational Use
Porsuk River offers significant opportunities for tourism and recreational activities, particularly in the city center of Eskişehir. The Adalar district, one of the most vibrant parts of the river, provides visitors with various experiences, including gondola and boat tours. Additionally, riverside cafés and restaurants create a popular social area for both local and international tourists.
