GEOG 1010 Lecture Notes - Lecture 10: Water Cycle, Surface Runoff, Evapotranspiration
18 Apr 2019
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Week 10 - streams: flowing water shapes the. Streams provide water and deposit fertile soil for agriculture. They also flood, erode and sculpt the landscape. North america: use water from streams and lakes. Water moves through the earth system along pathways in the hydrologic cycle. Evapotranspiration moves water into the atmosphere; precipitation brings it back to earth. Once on the ground, it may flow across the surface as runoff (into stream channels) or infiltrate down into the subsurface and become part of the ground water. A drainage basin is the area that drains into a stream. Larger streams (like major rivers) contain the drainage basins of all the tributaries that feed into it. Discharge is the amount of water that flows through a channel. Discharge is calculated by first finding the cross-sectional area of a stream then multiplying this times the velocity. The result will always be in a measure of volume per unit time.
