What is a turlough?

A turlough is a unique type of seasonal body of water that typically appears in limestone areas of Ireland. It is characterized by its fluctuating water levels, which rise and fall with seasonal rainfall or as groundwater levels change. Unlike permanent lakes, turloughs can dry up completely during the summer months, leaving behind grassy or muddy areas. The hydrology of a turlough is influenced by the underlying limestone, which allows for both surface and subsurface drainage, causing the distinctive seasonal changes in water presence. This makes turloughs important ecological sites, supporting diverse plant and animal life that are adapted to their temporary nature. Understanding this concept is vital, especially in the context of Irish geography and wetland ecosystems.