The VO results present three conditions:

  1. Existing conditions – Wetland depth under current conditions.
  2. Post-development (observed GW levels) – Wetland depth using observed groundwater levels.
  3. Post-development (simulated GW levels) – Wetland depth using simulated groundwater levels.

For each simulation year, generate a hydrograph displaying the modelled pre-development and post-development wetland storage levels. The average storage depth for each Julian day (e.g., February 19 = Day 50) during the pre-development period should be calculated and used to establish upper and lower 95% confidence interval boundaries. These confidence intervals, which remain consistent across all years, should be plotted alongside the modelled wetland storage on each hydrograph.

Figure 1 presents a hypothetical hydrograph for all simulation years for comparing pre- and post-development using the existing GW level and post-development using the simulated GW level.
Table 1 presents the number and percentage of days out of the confidence interval.

Figure 2 presents a hypothetical hydrograph for all simulation years for comparing pre- and post-development with control using the existing GW level and post-development with control using the simulated GW level.

Table 2 presents the number and percentage of days out of the confidence interval.


Figure 1. Hypothetical hydrograph for all simulation years – comparing pre- and post-development

Table 1. Number and percentage of days out of the confidence interval.

A1
  1. of days out of confidence interval
Precent of days out of confidence interval
Existing – 1991-2007 0 0
Post – 1991-2007 4 1.00
Post(SimulatedGW) – 1991-2007 13 3.00


Figure 2. Hypothetical hydrograph for all simulation year – comparing pre- and post-development with control.

Table 2. Number and percentage of days out of the confidence interval.

A1
  1. of days out of confidence interval
Precent of days out of confidence interval
Existing – 1991-2007 0 0
Post Mit – 1991-2007 4 1.00
Post Mit(SimulatedGW) – 1991-2007 27 7.00