Watersheds

Question 1

What are the two watershed landforms that you need to be careful of building upon?

Answer 1

Alluvial fans

Terraces

Question 2

What is a riparian management zone?

Answer 2

It’s a guideline by the BC Forest Practices Code that dictates the distances you need to build away from streams. S1 biggest stream, S6 smallest

Question 3

$LGt – V

List the different types of information these symbols indicate.

Answer 3

In order:

1) Texture - lower case letter
2) Genetic Material upper case letter and potential qualifier (glacio)
3) Surface Expression - lower case letter. What the landscape looks like. Slope, terraces, fans etc
4) Geological Process that is modifying the landscape - Gully erosion, karst, rock fall etc

Question 4

Where would you find information about Materials and Landforms?

Answer 4

Terrain Maps

Question 5

How can you tell how well the terrain has been surveyed and to what accuracy?

Answer 5

Terrain survey intensity levels (TSIL)

Question 6

What are fluvial sediments normally like?

Answer 6

Sorted, bedded, small to large particles

Question 7

What are Lacustrine sediments normally like?

Answer 7

Fine sediments, coarse material at inlets, well sorted/statified along beaches, varves,

Question 8

What are the characteristics of Colluvium

Answer 8

Coarse to fine in texture, rubble, poorly sorted, non bedded to bedded, angular clasts,

Question 9

What are the 5 components of BC’s WAP?

Answer 9

▪ Hillslopes and mass wasting events
▪ surface erosion – landslides and roads
▪ peak flows – Equivalent Clearcut Area
▪ Riparian Conditions
▪ Stream Channels

Question 10

What are the 5 major macroclimate zones of BC?

Answer 10

▪ coast mountains and islands
▪ north, northern and central plateaus and mountains
▪ south, interior plateau
▪ north, the great plains
▪ columbia mountains and southern rocky mountains

Question 11

What are some of the major factors influencing flow hydrograph?

Answer 11

▪ climate:
- precipitation type
- rain intensity and duration
- storm size and direction
▪ geologic factors:
- rock and soil types
- vegetation
▪ physical characteristics of drainage basin
- topography
- drainage system density
- surface gradient
▪ other factors:
-land-use, urbanization, logging
- lakes
- water diversion