Stream Forms, Sediment Loads, and Flood Probability Concepts

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Last updated 5:19 PM on 5/5/26
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13 Terms

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Types of streams

Straight, Meandering, Braided

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Straight Stream

Has a fairly uncurved line (mostly straight)

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Meandering Stream

Has loops and curves

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Braided/Anastomosing Stream

Looks like strands of water that have been braided

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Erosion on Cut Bank

Withdraw from bank = erosion on cut bank

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Deposition at Point Bar

Hang at the bar = deposition at point bar

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Dissolved Load

Ions dissolved from soluble minerals held in solution in the water

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Suspended Load

Small grains (silt and clay) that swirl in the water column without settling on the bed of the stream

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Bed Load

Large particles (sand gravel) that bounce or roll along the bed of the stream

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Dendritic Drainage System

Usually dendritic

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Recurrence Interval

Average number of years between floods of a given size

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Annual Probability

Likelihood that a flood of a given size will happen in a year

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Annual Probability Calculation

Calculated by annual = 1/recurring interval