To help diagnose generalized anxiety disorder, your health provider may: 1  Do a physical exam to look for signs that your anxiety might be linked to an underlying medical condition. 2  Order blood or urine tests or other tests, if a medical condition is suspected.
Runoff that occurs on the ground surface before reaching a channel is also called a nonpoint source. If a nonpoint source contains man-made contaminants, or natural forms of pollution (such as rotting leaves) the runoff is called nonpoint source pollution.
In general, the lower the infiltration rate, the greater the surface runoff, and thus the greater the potential for soil erosion. A high infiltration rate lets most of the rain water soak into the soil and make its way downward to the aquifer.he infiltration rate refers to how fast water soaks into the soil. This turns out to be a very important property of soils that affects vegetation growth, recharge of aquifers, stream flow, and soil erosion. Purpose: Introduce the concepts of soil water infiltration and the soil water balance.