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 addition to causing water erosion and pollution, surface runoff in urban areas is a primary cause of urban flooding which can result in property damage, damp and mold in basements, and street flooding.urface runoff can be generated either by rainfall,snowfall or by the melting of snow, or glaciers. Snow and glacier melt occur only in areas cold enough for these to form permanently.