Scrub on the remainder, however, serves to stabilize the soil of the forest lands against erosion and to slow the runoff of water.
They are spring-fed, and their runoff drains into Turkey Cock Run.
Another part may penetrate a little distance into the zone of weathering and then join the runoff.
Geological conditions are frequently of great importance in their influence on the quantity and regularity of runoff.
Runoff is checked by a sod and less water is used by a sod in mid-summer, after it has been mowed, than by a heavy cover crop.
Such of them as issue from storm sewers will be eliminated when a solution turns up for the problem of runoff water.