Table 1 Calculated annual inundation rates for various tidal elevations.

From: Coastal wetlands can be saved from sea level rise by recreating past tidal regimes

SmartGate trigger water level (m AHD)

Equivalent natural (actual) peak water levela

Exceedance probability (%)b

Percentage of water levels below peak (%)

Approximate tides per year to reach peak

 + 0.30

0.75

2.8

97.2

600

 + 0.36

0.81

1.6

98.4

50

 + 0.45

0.90

0.3

99.7

45

 + 0.55

1.00

0.01

99.9

18

  1. aBased on vegetation elevation.
  2. bThe duration water level is above the threshold in a natural site.