32.2.C. Basin Characteristics

Try these first

1. 1.

   What does basin shape affect?

   Hint

   Think about how water flows in a straight line.

2. 2.

   Define drainage density.

   Hint

   Consider how many channels are in a given area.

3. 3.

   What is the effect of a compact basin shape on runoff?

   • Slower runoff
   • Faster runoff
   • No effect

   Hint

   Think about how distance relates to travel time.

4. 4.

   True or False: Higher drainage density always leads to more flooding.

   • True
   • False

   Hint

   Consider the efficiency of water channels.

5. 5.

   Given a basin of irregular shape and a compact basin, discuss how each shape affects the runoff during a storm event, including the potential flood risks.

   Hint

   Think about water path lengths.

6. 6.

   Calculate the drainage density of a basin with a total stream length of 120 km within an area of 300 km².

   Hint

   Remember to use total length over area.