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Section 6 The Selected Alternative Plan

EAA Storage Reservoirs Revised Draft PIR and EIS February 2006

6-33

requires a detailed plan and forecast to assure the long-term viability and

operability of the project, as constructed.

6.7 PLAN ACCOMPLISHMENTS

The selected alternative plan and preferred plan for purposes of NEPA, would

meet all of the project-specific objectives established for the EAA Storage

Reservoir. It is expected to provide an aggregated 96,244 average annual

habitat units, in comparison to the no-action alternative. It is expected to

deliver, on average, 920,000 annual acre-ft of water to the Everglades. Habitat

units gained would be in Lake Okeechobee littoral zone, where an average

increase in spatial extent is expected, in the St. Lucie and Caloosahatchee

estuaries, and in the Water Conservation Areas. Additionally, the Reservoir

itself is expected to provide the following local benefits: incidental nutrient

removal as a function of water retention and sediment deposition (improving the

function of downstream existing stormwater treatment areas; creation of

additional shallow seasonal wetlands (wading bird and fish habitat) in the

seepage canal littoral zones and seepage buffer areas; and creation of deep water

fish refugia in the flooded secondary agricultural canals inside the reservoir.

The plan would improve habitat function and quality and it would improve

native plant and animal abundance and diversity.

6.8 CONTRIBUTION TO ACHIEVEMENT OF INTERIM GOALS AND

TARGETS

To conduct its evaluation, RECOVER first considered the LAI modeling runs for

each alternative plan to ensure that each alternative was still consistent with

system formulation. The results of this screening confirmed that no alternative

plan performed significantly better or worse when considering all other CERP

projects in the simulation. The next step in RECOVER’s evaluation was to

consider the NAI to determine if differences occurred among alternative plan

performance. Review of RECOVER’s system-wide performance measures as well

as additional relevant information mentioned in the report indicates that the

Project meets its goals of: (1) improving habitat in Lake Okeechobee and the

estuaries by reducing EAA irrigation demands on Lake Okeechobee and

providing storage of regulatory releases from Lake Okeechobee, (2) improving

habitat in the EPA by providing adequate timing of environmental water

deliveries and providing storage of regulatory releases from Lake Okeechobee,

and, (3) increasing flood protection within the EAA.

The project has a positive effect upon the lake’s littoral zone wetlands reducing

the number of high stages (greater than 15 feet for 365 days or more). Operating

at lower stages will help maintain the nutrient budget of the lake. EAA

backpumping to the lake as well as STA bypasses both declines under the future

with project (next added increment).

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