Title: Revisiting Today's Taboos in Water Resource Management: Figure 3D: Indian River Lagoon Basin 1990
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Permanent Link: http://ufdc.ufl.edu/WL00001494/00001
 Material Information
Title: Revisiting Today's Taboos in Water Resource Management: Figure 3D: Indian River Lagoon Basin 1990
Physical Description: Photograph
Language: English
 Subjects
Spatial Coverage: North America -- United States of America -- Florida
 Notes
Abstract: Revisiting Today's Taboos in Water Resource Management: Figure 3D: Indian River Lagoon Basin 1990
General Note: Box 8, Folder 6 ( Vail Conference, 1996 - 1996 ), Item 20
Funding: Digitized by the Legal Technology Institute in the Levin College of Law at the University of Florida.
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Bibliographic ID: WL00001494
Volume ID: VID00001
Source Institution: Levin College of Law, University of Florida
Holding Location: Levin College of Law, University of Florida
Rights Management: All rights reserved by the source institution and holding location.

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Indian River Lagoon Basin
and Surounding Aeas
1990 Land Use


A
0 1.1 3
SCALE 1:161000
ONE INCH REPRESENTS 2.3 MILES


These figures display the
tremendous increase in
urbanization which has
occurred within the
Indian River Lagoon over
the last 20 years.


Figure 3D

1.1.10









I" lakes in Tampa where Harbour Island or the Convention Center now stands. Not only are
the direct costs exorbitant, but the social and indirect economic impacts of displacing
500,000 acres of productive agricultural lands, bull-dozing highly valuable business real
estate and replacing infrastructure with wetlands would be significant Yet while we fiddle
with outdated dogma, our waterways continue to degrade.

Let us look at a couple of examples where an in-system treatment solution should be
considered. Figure 4 illustrates the typical bulkheaded outfall to the Indian River Lagoon.
This could just as well be Tampa Bay, Biscayne Bay or any other populated bay area. The
outfall is the discharge point for an urban stormwater basin in the City of Rockledge on the
Indian River Lagoon of Brevard County and serves a drainage area of 50 acres of single
family, multi-family and light commercial land use. The area was developed before
today's water quality treatment regulations so the discharges are essentially untreated, and
the availability of land to retrofit the drainage area for treatment makes a treatment solution
cost-prohibitive. The impact to the lagoon by this discharge is considerable. Sediments
and the pollutants bound to these sediments are discharged into the lagoon at a substantial
rate. Urban outfalls of the type in Figure 4 can contribute over 10,000 pounds of silt, 200
pounds of total nitrogen and 40 pounds of total phosphorus per year. This silt and
Accompanying pollutants can have serious adverse impacts to seagrasses and the bottom
organisms in the vicinity of the outfall. Such pollutants can be more broadly transported by
wind energies. In this particular location, real estate that would be most logically used to
provide a treatment location for the basin is unavailable. To treat this runoff, an area of no
less than three acres of single family or commercial land would be required to construct a
treatment facility. Real estate costs alone would approach one million dollars. Along with
the direct cost, indirect factors associated with the potential ill will of displaced
homeowners and the impacted adjacent owners would exact political costs to the
implementing agency.

Figure 5 shows a conceptual design of an in-system facility that might be appropriate for
this outfall. This facility provides treatment of the stormwater waste stream by reducing
the velocity of the discharge and thus allowing the pollutant-containing sediment to settle
out in the holding area. In addition to the physical treatment, the instream holding area
creates better habitat than the unvegetated and unstable bottom which now exists at this
location. In this suggested design, the muck-filled, seagrass-depleted bottom is dredged of
its unstable and ill-suitable soils. A treatment area is identified and set apart by rip-rap, a
small berm or other physical barrier that effectively segregates the treatment area from the
waterway. This provides a suitable mechanism for stabilizing the interior system and
minimizes the impact of wave energies in the larger system caused by wind, tides, or boat



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