The Upper Cimarron Bluff Watershed (HUC 11040008) covers an area of approximately 1,500 square miles in northeast Oklahoma and southeast Kansas. The hydrology of the watershed is dominated by the Cimarron River, which flows through the area and is fed by several smaller tributaries. Snowpack is not a major factor in the area, as the region generally experiences mild winters with little snow accumulation. Surface water in the watershed is primarily used for irrigation, with several reservoirs and dams constructed along the Cimarron River. These reservoirs contain a variety of constituents, including sediment, nutrients, and organic matter. Interesting climatic facts about the area include the fact that the Cimarron River is prone to flooding, particularly during periods of heavy rainfall. Trends in precipitation and temperature in the region are difficult to predict due to the complex interactions between air masses, topography, and other factors. However, climate change is expected to have a significant impact on the region in the coming years, with increased variability in precipitation and potential changes to the timing and intensity of storms.