Based on these assertions, the White Paper:

  • outlines priorities for research to determine the processes that maintain the ridge and slough landscape, and

  • suggests new performance measures based on ridge and slough geometry.

The White Paper stops short of recommending that performance measures directly related to flow be instituted at this time. Instead it points out that there are tradeoffs involved with attempts to restore water flow, water levels, and hydroperiods, largely because there is not enough water. Until more is known about the role of flows, restoration emphasis should be placed on levels and hydroperiods.

FIGURE 2-1. The ridge and slough landscape in the context of the major features of the historic and current Everglades. WCA = Water Conservation Area [1, 2, and 3], LEC SVC. = Lower East Coast Service [Areas 1, 2, and 3]. LNWR = Loxahatchee National Wildlife Refuge. The pre-drainage system depicted above is a synthetic satellite image reconstructed by the SFWMD Hydrologic Systems Modeling Division using the Natural System Model (NSM) Version 4.5. The NSM simulates the hydrologic response of the pre-drainage Everglades system to historical (1965-95) meteorologic data. This is the view of the landscape that was likely to have existed circa 1850. This image can be found on http://sofia.usgs.gov/sfrsf/rooms/hydrology/water/wherebefore.html. Current system from Adaptive Assessment Team (2003).



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