Lerez is a river located in the Basque Country of northern Spain. It flows through the province of Gipuzkoa and is known for its scenic beauty and ecological significance. The river is a tributary of the Oria River, contributing to the region's water system and supporting local wildlife. The Lerez River is popular for various recreational activities, including fishing and kayaking. Its banks are lined with lush vegetation, making it a pleasant spot for nature walks. The river also plays a role in the local economy, providing water for agriculture and supporting tourism in the area.