17.3 Environmental Flow Assessment and Water Resources…
381
Table 17.7
(continued)
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
Bankfull a
Anytime
Anytime
1011
397
0.58
1 day peak;
Achieve Q
PEAK
and Q
DAILY on day
of peak
+294(+437)/−285(−382)
Overbank
High flow
season
Apr–Sep
1102
428
0.58
1 day peak;
Achieve Q
PEAK
and Q
DAILY on day
of peak
+323(+440)/−340(−387)
a
If Overbank delivered then Bankfull component can be omitted
b
Rate is the maximum change in discharge that is allowed from one day to the next. Target is a recommended rate change, but the maximum can be used (at
higher environmental risk). If allowable rate change exceeds the required event magnitude then discharge can be raised to the event magnitude over one day.
Source
WET (2007)
Permission granted by WET project subject to proper citation