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17 Environmental Flow Definition and Management: A Case Study …
Table 17.7
Summary of flow requirements for Reach 2
Flow
component
Timing
Months
Q
PEAK (m 3
/s)
Q
DAILY (m 3
/s)
Frequency (per
year)
Duration
Rise/fall target (max) m 3
/s
Low flow
Low flow
season
Oct–Jan
1.3
1.3
Continuous or
less than if
natural
Low flow
Low flow
season
Feb–Mar
3.4
3.4
Continuous or
less than if
natural
High flow
High flow
season
April–Sep
4.0
4.0
Continuous or
less than if
natural
Low flow
pulse
Low flow
season
Oct–Dec;
Jan–Mar
53
53
2
2 consecutive days
in Oct–Dec and
2 days in Jan–Mar
+29(+52)/−23(−37)
High flow
pulse
Spawning
period
April
53
53
1
2 consecutive days +29(+52)/−23(−37)/
High flow
pulse
High flow
season
May–Sep
53
53
4
2 consecutive days +29(+52)/−23(−37)/
(continued)