Perennial streams are bodies of water that flow continuously throughout the year, regardless of seasonal changes. They are typically fed by groundwater, rainfall, or melting snow, which helps maintain their flow even during dry periods. These streams play a crucial role in the ecosystem, providing habitats for various aquatic and terrestrial species. Unlike intermittent streams, which may dry up during certain seasons, perennial streams offer a stable environment for plants and animals. They are important for water supply, recreation, and agriculture, and they contribute to the overall health of the surrounding environment by supporting biodiversity and preventing soil erosion.