The Pacific Southwest Forest and Range Experiment Station (USDA Forest Service) is redirecting the efforts of its snow hydrology research team to cumulative effects problems. The new title of the unit is "Cumulative effects of resource management on forested watersheds, aquatic ecosystems, and fish communities in California's inland mountain ranges".

The unit will:

• develop cumulative effects models that relate land management scenarios to basin responses and to changes in the diversity and integrity of aquatic ecosystems
• determine the spatial and temporal variability of physical and biological systems so that changes due to land management may be detected.
• predict the rates of recovery of channel systems in disturbed watersheds and the effectiveness of aquatic habitat restoration and enhancement efforts