Contents
- 1 How to calculate the distance of a river?
- 2 How is the depth of the headwater determined?
- 3 Why does discharge increase along the long profile of river X?
- 4 How are contour lines and intervals related to elevation?
- 5 How is the distance between two points calculated?
- 6 How to find the shortest distance between two places?
How to calculate the distance of a river?
This tool from USGS let’s click on a point on any river or stream in the US and then it “traces” the body of water upstream or downstream. You can calculate either (A) the distance from a point on a stream or river to it’s outlet on the ocean or (B) the distance from a point to its source upstream.
How is the depth of the headwater determined?
Headwater depths are determined by summing the energy losses associated with entrance shape, exit expansion and friction of the culvert. This is described in the basic energy balance equation:
What does the depth of water above the culvert mean?
The depth of water above the culvert inlet bottom is known as the Headwater Depth. This depth represents the amount of energy available to convey water through the culvert. Headwater depths are a function of the entrance shape, along with the depth and velocity immediately inside the culvert.
How is the total headloss of a culvert calculated?
FishXing calculates total headloss as the sum of the Entrance Loss, Exit Loss, and Friction Loss. Note: High exit velocities can cause downstream scour and present a barrier to fish passage so Exit Velocity should be considered in the design of culverts.
Why does discharge increase along the long profile of river X?
For example, discharge increases as you move downstream of a river or bedload (material on the river bed) particle size decreases along the river channel. Questions that can be investigated during river fieldwork include: How and why does discharge increase along the long profile of River X?
A contour interval is the vertical distance or difference in elevation between contour lines. Index contours are bold or thicker lines that appear at every fifth contour line. If the numbers associated with specific contour lines are increasing, the elevation of the terrain is also increasing.
How to calculate the cross sectional area of a river?
To calculate the cross-sectional area you will need to know the mean depth. According to the Bradshaw Model depth increases from the source to the mouth of a river. What is the width of a river? The width of a river is the distance between the points where water comes into contact with each river bank.
Which is the shortest distance from a line segment?
The shortest distance from a point to a line segment is the perpendicular to the line segment. If a perpendicular cannot be drawn within the end vertices of the line segment, then the distance to the closest end vertex is the shortest distance.
How is the distance between two points calculated?
However, there are three basic rules, described in detail below, that determine how distance is calculated. The distance between two points is the straight line connecting the points. Distance from a point to a line is either the perpendicular or the closest vertex. Distance between polylines is determined by segment vertices.
How to find the shortest distance between two places?
To find the shortest road distance between to places, please enter the source and destination and then check for the shortest road distance between any two locations. You can also find the flight distance between two places.