The lost watershed, also known as HUC 18010204, covers a total land area of approximately 1,515 square miles. The area is known for its snowpack, which typically accumulates during the winter months and provides a crucial source of water for the surrounding region during the spring and summer. However, in recent years, the snowpack has been decreasing due to climate change, leading to concerns about water scarcity. The watershed includes several bodies of surface water, including the Lost River, the Little Lost River, and the Big Lost River. These rivers are fed by snowmelt and groundwater, which contributes to the overall hydrology of the region. Reservoir constituents in the area include the Mackay Reservoir, which provides irrigation water for local agriculture. Climatically, the area is known for its extreme weather conditions, including frequent droughts and wildfires. However, in recent years, the region has seen an increase in precipitation and flooding events, which may be linked to climate change.