7. Wha t is the minimum possible value for a bifurcation ratio? Please esplain y

Question

7. Wha t is the minimum possible value for a bifurcation ratio? Please esplain your answer. 8. In what way is stream order a function of map scale? 9. A stream network is known to have a constant bifurcation ratio of exactly "6". Assuming that there are 6 streams of order 4 in the basin, how many streams of order 1, 2, 3, and 5 should be present in the basin? 10. A rectangular area with dimensions of 5 x 12 km has a total of 37 km of streams within its borders. What is the drainage density of this rectangular area?

Explanation / Answer

7) Bifurcation ratio = Number of streams of an order/Number of streams of the next higher order

According to Horton, Bifurcation ratio for flat drainage basins is 2 which is the minimum value.

Bifurcation ratio for mountainous drainage basins is 3 to 4.

So the minimum possible value for a Bifurcation ratio is 2.

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