What are the chemical, physical, and biological characteristics and process-interactions of key watersheds?
Stressors And Related Factors: Landform processes, floods, climatic change, land use, visitor use, vegetation changes due to fire and disease, mines, wet and dry deposition. What To Monitor: Physical: (1) classify stream reaches; (2) habitat survey using standard protocols (channel units, large woody debris loading, pool dimensions/ frequency); (3) gauging station (use standard USGS protocol); (4) bed mobility (particle tracers, scour chains, bed load sampling)–discretionary. Chemical: TSS, nutrients, pH, DO. Biological: (1) riparian inventory (vegetation type, quality, age/size); (2) aquatic population surveys stratified by reach type. Overlay above information with watershed geology, hillslope geomorphology, land use, etc. Where To Monitor: Channel classification: entire watershed (map exercise, ground truthed). Habitat survey: entire watershed if inventory required or a sample of channel types. Chemical: several sites throughout the watershed stratified by reach type, including one
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