|
|
Article: Stream Valleys, Channels, and Floodplains
- Article from:
- World of Earth Science
CopyrightCOPYRIGHT 2003 The Gale Group, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
|
Stream valleys, channels, and floodplains
Stream valleys, channels, and floodplains form complicated systems that evolve through time in response to changes in sediment supply,
precipitation
, land use, and rates of tectonic uplift affecting a drainage basin. Stream channels serve to convey flow during normal periods, whereas floodplains accommodate flow above the bankfull stage (
floods
) that occurs with frequencies inversely proportional to their magnitude. Bankfull stage is defined as the discharge at which the
water
level is at the top of the channel. Any further increase in discharge will cause the water to spill out of the channel and inundate the adjacent floodplain. Flood ...
Related newspaper, magazine, and journal articles:
|
|
Transcript: CARDIN CALLS FOR AN END TO MOUNTAINTOP MINING
Capitol Hill Press Releases;
June 25, 2009 ;
568 words
... ... of blasting off mountaintops and discarding the rubble in stream valleys, also known as "mountaintop mining." In the more than ... burial or adverse impacts on more than 1,700 miles of stream channels. The disappearance of these valley streams is a great concern ...
|
|