The Rock Watershed, also known as HUC 10170204, covers an area of 4,527 square miles in eastern Nevada and western Utah. The hydrology of this watershed is dominated by the Humboldt River, which flows through the region providing a crucial source of water for agriculture and other human activities. Snowpack in the area is highly variable and can have a significant impact on the water supply. Surface water quality in the watershed is generally good, though there are some issues with excess sedimentation and nutrient pollution. Reservoirs in the area, including the Rye Patch Reservoir and the Wildhorse Reservoir, provide additional storage for water resources. Interesting climatic facts include the high variability of precipitation and temperature in the region, which can impact the timing and amount of water available in the watershed. There has also been a trend of increasing temperatures in recent years, which could have significant implications for water resources in the future.