The Cache la Poudre watershed (HUC 10190007) covers a land area of approximately 1,542 square miles in northern Colorado. The watershed is fed by snowpack from the Rocky Mountains and experiences a Mediterranean climate. The snowpack contributes to the surface water and reservoirs in the watershed. The Cache la Poudre River is the main stream, which flows from the mountains to the plains, through local communities and agricultural lands. The watershed also contains several reservoirs, including Horsetooth Reservoir and Carter Lake. Unique climatic facts include the high variability of snow accumulation and precipitation from year to year. Trends in temperature and precipitation indicate an overall warming and drying trend, which may impact the snowpack and water availability in the watershed, affecting both natural ecosystems and human water use.