What controls the fate of precipitation once it falls? Climate Geomorphology Infiltration Vegetation
Infiltration: Where does the water go? www.uwsp.edu/geo/faculty/ritter/geog101/modules/hydrosp here/subsurface_water_1.html
Why does water infiltrate some land more than other land ? Topography Steep verses gentle slopes Soil/Land Surface Type Vegetation
Geomorphology and Run-off Topography The general configuration of a land surface or any part of the Earth's surface, including its relief and the position of its natural and man-made features Slope Also known as “gradient” when referring to streams Drainage Patterns Channel Shape
How does the type of soil or the lack of soil affect infiltration? Porosity Permeability Pervious verses Impervious Surfaces Soil cover verses bare rock Soil verses concrete and asphalt
The type of material in the unsaturated zone influences whether precipitation runs off or infiltrates into the subsurface. The greater the likelihood that water infiltrates into the subsurface, the higher the rating applied on a scale of 1 to 10.
The hydraulic conductance is related to permeability and represents the ability of the unsaturated zone to transmit water. The higher the conductance of the unsaturated zone, the higher the rating applied on a scale of 1 to 10
How does vegetation affect runoff? Provides a physical barrier and decreases the rate at which water enters a stream Roots loosen soil and provide conduits for water Plants absorb water What happens when vegetation is removed for building?
For surface-water systems, the greater the likelihood that water runs off the land surface, the higher the rating applied on a scale of 1 to 10