Rules for Cont. Mapping
Rules for Cont. Mapping 2
Guater
Streams
Discharge
100
Contour lines always close to form an
What is an irregular circle
100
Contour lines merge to form a single contour only where there is
What is a vertical cliff
100
Contour lines crossing a stream valley will form a
What is a "V" shape pointing in the uphill (and upstream) direction
100
THE CHANGE IN THE MASS OF WATER IN THE BASIN IS
What is equal to [THE MASS OF WATER ENTERING] - [THE MASS OF WATER LEAVING A BASIN]
100
Sediment transfer can alter...
What is Earth’s landscapes
200
Every point on a contour line has the
What is same elevation
200
Evenly spaced contour lines of different elevation represent
What is a uniform slope
200
Any body of water confined within a channel
What is a stream
200
The volume of water flowing through a given cross-section in a specific length of time. Q = A*v
What is Discharge (Q)
200
Total quantity transported by stream [depends on supply]
What is Load
300
Moving from one contour line to another always indicates
What is a change in elevation
300
The closer the contour lines are to one another the
What is steeper the slope
300
Region from which a stream draws its water
What is Drainage Basin
300
What does discharge do
What is Increases downstream
300
Total load a stream can potentially move [related to discharge]
What is Stream Capacity
400
The elevation change between two adjacent contour lines is
What is the contour interval
400
A series of closed contours (the contours make a circle) represents
What is a hill
400
Water can leave a basin by
What is Evaporation (and evapotranspiration) • Discharge from streams (e.g. into the ocean) • Groundwater recharge
400
To measure stream discharge, you need the following:
What is stage (or gage height) which gives the depth of a river at a certain time and average velocity in the section
400
What is the discharge of a stream where its average velocity is 3ft/s, its average depth is 20ft, and its width is 200ft?
What is 12,000ft^3/s A=20*200 V=3 Q=3*20*200
500
Contour lines never cross one another. The one exception is if you have an
What is an overhanging cliff or cave (Dashed)
500
In older maps, if the closed contours are hachured it indicates
What is a closed depression
500
Water can enter a basin by
What is Precipitation • Melting snow and ice • Groundwater discharge
500
Water in streams can transport material from one location to another
What is Sediment Transport
500
The 100 year flood
What is that which only occurs once per century... Really? This is question.
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