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U.S. Department of the Interior
Freshwater Runoff and Salinity Distribution in the Loxahatchee River Estuary, Southeastern Florida, 1980-82
Water-Resources Investigations Report 83-4244
Gary M. Russell and Benjamin F. McPherson
During a recent
study, freshwater mixed with seawater over a distance of 5 to 10 river miles
in the Loxahatchee River estuary. Large freshwater inflows vertically stratified
the estuary and shifted the mixing zone seaward. In the northwest fork of
the estuary, the saltwater-freshwater inferface moved daily about 0.5 to
1.5 river miles as a result of tides and annually about 3 to 5 miles as
a result of seasonal changes in freshwater inflow. In the southwest fork,
saltwater movement upstream was blocked by a gate and dam structure in Canal-18,
4.7 miles upstream from the Atlantic Ocean. Although Canal-18 discharged
about one-third of the total freshwater tributary inflow to the estuary,
the effects of canal discharge on salinity were limited to relatively brief
periods. Much of the time, no freshwater was discharged.
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U.S. Department of the Interior, U.S. Geological Survey
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Last updated: 04 September, 2013 @ 02:04 PM (KP)