Table 1. Unified flow recommendation’s high-flow pulses and floods for dry, normal, and wet years.
EFC = environmental flow component.

EFC Season Year type Magnitude (m3/s) Frequency Duration Example flow-ecology links
Early wet-season high-flow pulses June 1–
July 15
Dry
Normal
Wet
125–170
125–300
125–500
≥ 1
≥ 2
≥ 2
4–10 d Provide cues to migratory fish
Reduce predation on juveniles spawned during dry season
 
Mid wet-season high-flow pulses July 16–
Nov. 14
Dry
Normal
Wet
200–600
200–900
200–900
≥ 4
≥ 4
≥ 4
4–10 d Trigger spawning activity by migratory fish
Fish gain access to channel margin habitat
 
Late wet-season high-flow pulses Nov. 15–
Dec. 15
Dry
Normal
Wet
125–170
125–300
150–350
≥ 1
≥ 2
≥ 2
4–10 d Migration and juvenile dispersal for late-spawning fish
Replenish beaches for reptile nesting
 
Flood Aug. 15–
Oct. 30
Dry
Normal
Wet
-
1000–2000
2000–3500
-
≥ 1
≥ 1
-
15–40 d
Sediment transport and maintain channel form
Create floodplain topography
Provide fish access to floodplain
Disperse tree seeds
Deposit sediment on agricultural fields