The Kauai Watershed, which covers an area of approximately 879 square miles, is located in the Hawaiian Islands and is known for its rich biodiversity and unique landscapes. The hydrology of the watershed is heavily influenced by the island's steep terrain, which results in high rainfall rates and rapid runoff. The watershed is also home to several important surface water features, including numerous streams, rivers, and reservoirs. The snowpack in the Kauai Watershed is not significant due to its tropical climate. The reservoirs in the watershed contain various constituents, including sediment, dissolved organic matter, and nutrients, which can impact water quality. Interesting climatic facts about the watershed include frequent rain showers, high humidity, and moderate to warm temperatures year-round. Climate trends in the watershed include increased rainfall variability due to climate change, which may ultimately impact the region's water resources and ecosystem health.