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NAU GLG 112 - Streams
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GLG 112 1st Edition Lecture 33 Outline of Last LectureII. Stream TerminologyA. HeadwatersB. MouthC. TributariesD. Trunk StreamE. Drainage BasinF. ChannelG. Floodplain H. Levee I. GradientJ. Base level III. Stream Flow: water and sedimentA. VelocityB. Discharge1. Formula Outline of Current Lecture2. Factors that control discharge3. Examples C. Sediment Load1. Bedload 2. Suspended load3. Dissolved loadIV. Types of streamsA. Strait streams 1. AppearanceThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.2. Location B. Meandering streams1. Appearance 2. Location Current LectureFactors that control discharge- Runoff/infiltration- Number of tributaries- Size of drainage basin (watershed)- Precipitation/evaporation- HUMANSSediment Load- Bedload is the bigger rocks and stuff at the bottom of the stream that moves slowly.- Suspended load is smaller dirt that moves with the stream and gives it its color. - Dissolved load is the tiny particles like calcium that you cannot see with the naked eye. It gives the water its taste. Types of streamsStrait streams1. AppearanceThey are in v-shaped valleys. Some are narrow and made from hard rock that cannot be eroded. They are fairly straight and have a low discharge (meaning they are shallow). They have a large bedload (big rocks at the bottom). They look clear because of the low suspended load (smaller particles that move with the current). These rivers have rapids because of the large bedload and shallow water, but don’t be fooled, the water is actually moving slower. 2. LocationThey have a higher gradient and are near the headwaters. They are high above base level so they have a downward erosion.Meandering streams1. AppearanceThey are windy and curvy. They are colored because they have a high suspended load. They have oxbow lakes and have a large floodplain (because they are on flat ground). These streams have little to know bedload. 2. LocationsCloser to the mouthLow gradientClose to base levelSide to side erosion (because of the low elevation)These streams move faster on the cutbank (the outside of the meander/curve) and slower on the point bar (inside of the


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NAU GLG 112 - Streams

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