Flood control and river training work...

1. Flood Control & River Training
Diversion Channel
ID: 1305053

2. Diversion Channel
Diversion channels are artificial channels acts as a
different route for excess water to flow further
mitigating the effects of flooding and restoring
rivers to their natural water level. Typically,
diversion channels are built around communities
or economic centers to prevent extensive flood
damage.

3. Purpose
1. To divert waters from the main channel
2. Flood control,
3. Municipal water supply,
4. Irrigation etc.

4. Classification
They are basically following types:
1. Portable check dams,
2. Diversion boxes,
3. Turnout boxes,
4. Pipe turnouts.

5. Flood Control & River Training
Floodways
ID: 1305053

6. Floodways
The channel of a river or stream and the
parts of the floodplain adjoining the channel
that are reasonably required to efficiently
carry and discharge the flood water or flood
flow of a river or stream.

7. Purpose
They serve mainly two functions to flood
assessment:
1. By providing an additional channel storage
for sorting a portion of a flood water.
2. By opening up a new channel to carry a part
of the main stream flow

8. Flood Control & River Training
Spreading Grounds
ID: 1305053

9. Spreading Grounds
Flood flows are sometimes diverted into large flat
land areas that are capable of absorbing water at
relatively high rates

10. Purpose
Main purposes are:
1. Spreading grounds serve to reduce the
downstream flood peaks,
2. Replenish under ground water reservoir
3. Groundwater withdrawn for human use
4. Artificial recharge helps prevent aquifer
depletion