Sediment and Erosion Control

Question 1

Helps Reduce Erosion in 3 Primary Ways:

1. Increase the surface permeability
2. Fill in small rills and voids
3. Promote growth of temporary or permanent vegetation

Answer 1

Compost Blankets

Question 2

Must not use in areas of concentrated or high velocity runoff

Answer 2

Compost Blankets

Question 3

A vegetated strip surrounding disturbed areas or along water body margins.

Answer 3

Buffer Zone

Question 4

Vegetative and structural practices to prevent or reduce bank erosion.

Answer 4

Steambank Stabalisation

Question 5

A temporary structure to control concentrated stormwater flows in channels.

Answer 5

Check Dam

Question 6

The creation, improvement, or stabalisation of channels for safe conveyance.

Answer 6

Channel Stabalisation

Question 7

A temporary channel to conduct flow around construction in a stream.

Answer 7

Stream Diversion Channel

Question 8

A concrete or half-pipe sectional flume to conduct flows safely down slopes.

Answer 8

Permanent Downdrain

Question 9

A permanent structure designed to accomodate vertical grade change in natural or man made channels

Answer 9

Grade Stabalisation Structure

Question 10

A zero gradient device used to convert concentrated flow into broad overland sheet flow.

Answer 10

Level Spreader

Question 11

A temporary or permanent dam used in streams or drainage channels to filter sediment and slow flow velocity.

Answer 11

Rock Filter Dam