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20 Rivers I-4 - mouth = 0 ft length = 2330 miles Δh = 1475...

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River Flow Flow is from headwaters to mouth
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Flow velocity strongly depends on the altitude of the headwaters in relation to the mouth River flow is due to gravity.
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Flow velocity is quantified, in part, by differences in elevation over a lateral distance. River Flow This driving force for river flow is called a gradient , or the difference in elevation divided by the length h L Δh ΔL source mouth Rivers flow due to gravity.
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The Mississippi Source: Lake Itasca at 1475 feet Mouth: Gulf of Mexico at 0 feet
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Mississippi : headwaters = 1475 ft
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Unformatted text preview: mouth = 0 ft length = 2330 miles Δh = 1475 feet – 0 feet = 1475 ft. ΔL = 2330 miles Δh = 1475 ft = 0.63 ft/mi ΔL 2330 mi Gradient Lake Itasca New Orleans Elevation: Length: Nile = 3721 ft = 0.9 ft/mile 4135 miles Amazon = 16,962 ft = 4.24 ft/mile 3980 miles Yangtze = 16,542 feet = 4.17 ft/mile 3917 miles Gradients of the Three Longest Rivers Andes Tibet Plateau Lake Victoria Large Gradient h L mouth h L mouth Small Gradient Δh ΔL Δh ΔL source source...
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