The Idanha-a-Nova Dam is a significant water reservoir located in the eastern part of Portugal. Constructed in the late 20th century, it serves multiple purposes, including irrigation, flood control, and hydroelectric power generation. The dam is built on the Pônsul River, contributing to the region's water supply and agricultural needs. The reservoir created by the dam is one of the largest in Portugal, providing recreational opportunities such as fishing and boating. It also plays a crucial role in supporting local ecosystems and maintaining water levels in surrounding areas, benefiting both wildlife and communities.