GEOL 101 Lecture Notes - Lecture 27: Silt, Surface 3, River Source
Document Summary
Drainage basing- a land area drained by a stream and its tributaries. Only . 03% of all water on earth is running water in streams and lakes. Stage: measurement of the height of the water level of a river, not generally the same as depth- different at different points, arbitrary zero is chosen for given point. Discharge: amount of water owing past a speci c place along stream, depends on water velocity and cross sectional size of a stream, water cross section x velocity (cubic meters/sec) Water cross section- width times the depth of the water in a channel. How water ows: streamlines ow parallel without turbulent mixing (laminar ow, streamlines cross causing turbulent mixing (turbulent ow) Competence and capacity: competence and capacity- streams ability to carry solid particles, competence- measure of the maximum size particle a stream can transport under a given set of ow conditions.
