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Section 2 Existing Conditions/Affected Environment

EAA Storage Reservoirs Revised Draft PIR and EIS February 2006

2-2

Wetland Solutions, Inc. authored a water quality assessment report in

September 2004 that provided a preliminary assessment of likely water quality

impacts of the proposed EAA reservoir, both alone and in combination with

STAs. In addition, this report summarized relevant, existing water quality data

(USACE, 2004).

The quantity, timing, and distribution of the existing water and changes in

water patterns made by the project alternatives features were identified using

the South Florida Water Management Model (SFWMM), hydrologic performance

measures, and a probabilistic approach utilizing volume probability curves.

Hydraulic modeling results were combined with water quality modeling to

estimate impacts upon water quality as a result of the alternatives to achieve

the proposed action (USACE, 2005).

2.2 GENERAL ENVIRONMENT

This sub-section describes the physical, biological, and human environments of

those areas to be affected by the alternatives under consideration. The existing

conditions are presented in either a regional or area specific context depending

on the nature of the resource or the anticipated effect to that resource.

The EAA encompasses 620,797 acres of mostly existing or former agricultural

land. It is located south of Lake Okeechobee, extending to WCAs 1, 2A, 2B, 3A,

and 3B on the east and south borders and to the C-139 Basin on the western

border. Existing agriculture in the EAA is dominated by sugarcane production

with a smaller production of vegetables, rice, and sod.

The EAA contains an extensive network of canals. For the purpose of this

report, these canals are divided into three types:

1. Primary - canals that convey water generally from Lake Okeechobee

through the EAA to coastal waters. Primary canals include the West

Boundary Canal, Miami, Hillsboro, West Palm Beach, L-8 Borrow, and

North New River Canals.

2. Secondary - canals that interconnect the primary canals. Secondary

canals include the L-1 East, Bolles, Cross, and Ocean Canals.

3. Agricultural - canals that provide water management and control within

specific farming operations. Agricultural canals are very numerous and

generally unnamed.

The canals within the EAA serve multiple purposes including water routing for

water supply for agriculture, flood protection, and water supply for

environmental needs. Figure 2-1 shows the system of primary and secondary

canals that presently exist within the EAA. The Rotenberger and Holey Land

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Wenger 72944 Especificações Página 66