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Drainage and Flood Mitigation - Short Course

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Mitigate flooding on your property

Drainage problems may not be easy to avoid when it rains too much, but with proper foresight and preparation drainage and flood issues will always be less.

This course brings together aspects of land management, engineering, hydraulics, surveying and engineering to help the student understand the factors that affect both movement and retention of water above and below the ground surface. It provides an awareness of ways drainage is mitigated and provides a foundation for better water management on any property.

Whats inside the 'Drainage and Flood Mitigation' Course?

LESSON 1 SCOPE AND NATURE OF WATER MANAGEMENT

What Needs to be Waterproofed in the Backyard?
Materials for Waterproofing
Why Drainage is Important
Reasons for Drainage
Lesson 1 Additional Reading
Review What You Have Been Learning

LESSON 2 WATER MOVEMENT IN SOILS

The Lateral Movement of Water
Review What You Have Been Learning

LESSON 3 UNDERSTANDING CAPILLARY ACTION

Review What You Have Been Learning

LESSON 4 MANAGING WATER AT THE SOURCE

Rainfall
Rainwater Harvesting
Stored Water – Dams, Reservoirs, Tanks
Diverting Storm Water
The Water Table
Leaks
Review What You Have Been Learning

LESSON 5 MANAGING SURFACE DRAINAGE

Types of Surface Drainage Systems
Surface Drainage
Lesson 5 Additional Reading
Additional Suggested Tasks
Review What You Have Been Learning

LESSON 6 MANAGING SUB-SURFACE DRAINAGE

Improving Soil Drainage
First decision: subsurface or surface drainage?
Types of Subsurface Drains
The Water Outlet
Gradients
Layout of Drains
Laying an Agricultural (Agi) Drain
Distance Between Drainage Pipes
Depth of Drains
Maintenance
Subsurface Drainage
Lesson 6 Additional Reading
Review What You Have Been Learning

LESSON 7 STORM DRAINAGE

Storm Runoff
Inlets
Manholes
Swales
Storm Water Management
Intensity of Rainfall
Stormwater Runoff Estimations
Lesson 7 Additional Reading
Selecting the Size (Diameter) of Pipes
Selecting the Size and Shape of Ditches and Swales
Set Tasks
Review What You Have Been Learning
Final Assessment

Understand why flooding can happen, and why it might not happen.

Awareness of how water moves above and below the ground is the first step toward flood mitigation. Problems can and will occur when proper drainage is not provided on a site.

Apart from all the obvious and visible problems ground that stays too wet for too long can breed all sorts of microorganisms. Humidity increases in places that are not well drained.