How do you calculate bifurcation ratio?
How do you calculate bifurcation ratio?
DISTRIBUTION OF BIFURCATION RATIOS if u=s 1. This relation indicates that the bifurcation ratio, Rh, is equal to the number of streams of the next to the highest order for a given drainage basin. Thus, the bifurcation ratio as defined by equation 4 can be equated to the number of maj or tributaries to a given stream.
What does bifurcation ratio indicate?
Dimensionless number denoting the ratio between the number of streams of one order (see stream order) and those of the next-higher order in a drainage network. It may be a useful measure of proneness to flooding: the higher the bifurcation ratio, the greater the probability of flooding.
How is relief ratio calculated?
The relief ratio is a number calculated to describe the grade of a river or stream. The calculation is just the difference in elevation between the river’s source and the river’s confluence or mouth divided by the total length of the river or stream. This gives the average drop in elevation per unit length of river.
How do you calculate stream length ratio?
It has been computed by dividing the total stream length of order ‘u’ by the number of stream segments in the order (Table 3).
How do you calculate length of overland flow?
The average length of overland flow was determined by dividing the watershed area by twice the total length of all waterways.
What is rectangular drainage pattern?
: the drainage pattern of streams that make many right-angle bends.
How is Sinuosity calculated?
Sinuosity is the ratio of river length (distance traveled if you floated down the river) divided by straight length line (bird’s flight distance, i.e. from point A to B). The greater the number, the more tortuous (strongly meandering) the path the river takes.
What is circulatory ratio?
Circulatory ratio is defined as the ratio of watershed area to the area of the circle having the same perimeter as the watershed perimeter.
What is basin relief ratio?
Relief ratio (Rh) When the basin relief (H) is divided by maximum basin length (Lb) gives the relief ratio (Schumm 1954). It measures the overall steepness of the drainage basin and is an indicator of the intensity of erosion processes. The relief ratio of the river basin is 0.03 (Table 8).
How is stream order determined?
Stream ordering is a method of assigning a numeric order to links in a stream network. This order is a method for identifying and classifying types of streams based on their numbers of tributaries. In both methods, the upstream stream segments, or exterior links, are always assigned an order of 1.
What is Swmm width?
The width in SWWM is a parameter that tells the program how long the water has to travel to the outfall.
What is overland flow time?
Overland flow travel time is divided into sheet flow travel time and shallow concentrated flow travel time. The overland flow is occurring after completion of infiltration or saturation process, it is generally assumed to be turbulent even though it mostly representing laminar characteristics (Grismer, 2016).
