| MULTIMEDIA |
| Slide
packs |
Sediment
control:
Exclusion and extraction of sediment from irrigation canals |
Output
summary
View slides
|
A
set of 24 slides illustrates the sediment problems met by irrigation
engineers, and some of the exclusion and extraction devices that
have been developed to overcome or reduce these problems. The slide
pack includes notes on each slide and an overview of the subject.
It is intended for use by students and teachers.
Produced
by HR Wallingford, UK. |
Sediment
monitoring:
Definitions, designs and uses |
Output
summary
View slides |
This
set of 24 slides shows examples of the different techniques available
for the monitoring of sediment in irrigation or water resources
projects. It also covers the kind of conditions likely to be associated
with various catchment sizes. The slide pack includes notes on each
slide and an overview of the subject. It is intended for use by
students and teachers.
Produced
by HR Wallingford, UK. |
| Soil
erosion |
Output
summary
View
slides |
Soil
erosion has a major, detrimental impact on agricultural productivity
and on water resource infrastructure such as dams and river diversion
structures. The slides in this pack provide examples of the causes,
effects and prevention of soil erosion. The pack is intended to
enable a teacher or lecturer to base teaching material on practical
situations. The slide pack includes notes on each slide and an overview
of the subject.
Produced
by HR Wallingford, UK. |
Irrigation
and the environment:
The effects on weeds, health and sediment |
| Output
summary View
slides |
This
set of 24 slides provides examples of how environmental problems
resulting from the introduction of irrigation to a site are recognised
and the attempts that are being made to overcome them. The slide
pack includes notes on each slide and an overview of the subject.
Produced
by HR Wallingford, UK. |
|
Top Of Page |
MULTIMEDIA
Videos |
| Measurement
for irrigation water management |
Output
summary
Order details |
A
25 minute video describing how improved water measurement and the
feedback of information between managers, field staff and farmers
can improve the equity of supply and water use efficiency. The video
is intended as a training resource.
Produced
by HR Wallingford, UK. |
| Sediment
discharge measurement |
Output
summary
Order details |
The
14 minute video starts by describing the problems caused by excessive
sediment in rivers and canals. The ways in which sediments of different
sizes travel and the theory of sediment transport are illustrated
to show the differences between wash load, suspended load and bed
load. The theory is then developed into a field technique to quantify
the sediment discharge at a particular site. The pump sampling method
of measurement, developed by HR Wallingford, is then described.
Produced
by HR Wallingford, UK. |
| Soil
erosion measurement - a drainage basin approach |
Output
summary
Order details |
The first
part of this 25 minute video describes the conditions that promote
erosion, how erosion depends on both the quantity and intensity
of rainfall and the means of reducing the effects of rainfall
through land husbandry. The second half of the film describes
techniques for measuring sediment, the amount of water running
off the catchment and rainfall. The video is intended as a training
resource.
Produced
by HR Wallingford, UK.
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