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Published byCody Manning Modified over 9 years ago
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Stream Order 4.12.A
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Physical Methods Stream order is a measure of the relative size of streams. Range from smallest, first- order, to the largest, the twelfth-order(Amazon) Over 80% of total length of Earth’s rivers and Streams are headwater streams(first and second order)
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As water travels from source to mouth, the streams tend to increase in width, depth, and discharge.
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First order streams Perennial: carry water all year Smallest streams Have no permanently flowing tributaries
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Second Order Streams Two first order streams come together to form second order streams. However, if a first order stream joins a second order, it is still a second order
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Third Order Stream When two second order streams come together, it forms a third order stream. How has the width of the stream changed since it was 2 nd order? How about since 1 st order?
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Fourth Order Stream When 2 third order streams come together,it forms a fourth order stream How has the width and canopy changed since 1 st, 2 nd, and 3 rd order stream?
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Stream order Two of the same order streams must come together before that stream goes up one level.
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