Watershed Science Central Concepts Watershed Science ...

• cours magistral

Slide 1 Watershed Science Lectures Watershed Science Central Concepts Watershed Assessment & Restoration GEOG/GEOL 642 Jerry Davis, Instructor Slide 2 Watershed Science Hydrogeomorphology A. Hydrologic cycle & runoff generation • Infiltration, soil moisture, ET, etc. B. Stream channel initiation • Slopewash processes, Hortonian & throughflow • Spatial patterns of channel formation C. Watershed variables influencing discharge • Watershed hydrologic variables • The hydrograph & lag time • Groundwater • Drainage density Slide 3 Hydrologic Cycle • Evaporation from oceans 419 km3 • Evapotranspiration from continents 69 • Precipitation over oceans 382 • Precipitation over continents 106 • Transport of vapor from oceans 94 • Transport of vapor from continents 57 • Runoff from continents

• stream channel initiation
• soil soil saturation increases with distance downslope
• surface condition
• overland flow
• soil moisture
• interflow rainfall
• runoff
• infiltration
• slide
• channel