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CMHAS Projects Listing
Hydraulic studies
Boca Ciega Bay is a heavily
impacted esturary located in Pinellas County, Florida. The bay has
been impacted by reduction of tidal prism from development along
the shore including large areas of dredge and fill. This morphological
alteration has impacted the tidal inlets that feed the bay including
John's Pass and Blind Pass. The tendency of John's Pass to enlarge
has undermined the bridge over the inlet resulting in a scour critical
rating and a public safety concern. This study was performed to
determine the interaction and long term trends of these two passes
and to investigate scour tendencies of the John's Pass Bridge for
normal and storm conditions. This project was funded by the Florida
Department of Transportation.
Hydrologic
Studies
The Little Manatee
River is located in southern Hillsborough County. This project includes
the collection of streamflow data (stages and flows) and 15-minute
precipitation in previously ungaged portions of the watershed. It
also includes the analysis of data in support of model calibration.
The work is being done for the Hillsborough County Stormwater Department
as a sub-consultant task to PBSJ.
This project was funded
by the Southwest Florida Water Management District which has regulatory
jurisdiction over water use covering 10,000 square miles in West-Central
Florida along the Gulf of Mexico. A prototype data base and supporting
spatial analysis utilities (HydroGIS) were developed which provide
the opportunity to transform atmospheric and hydrologic observations
into parameters that are consistent with model scale. An integrated
hydrologic model (FHM) was applied to a large-scale and a small-scale
model domain.
This FIPR funded project (#95-03-118)
sought to investigate hydrologic conditions (historical and proposed)
of a previously mined, urbanizing basin tributary to the upper Peace
River. Among the objectives of this study, was the investigation
of the feasibility of creating large scale wetland mitigation and
ecosystem restoration on reclaimed mine land and the reestablishment
of a more historical hydrologic function of the Saddle Creek watershed.
Another important objective was the demonstration of the calibration
and utility of the FIPR Hydrologic Model, FHM, for large-scale mine
reclamation. A supplemental contract with DEP added flood plain
modeling of the upper Saddle Creek. This supplemental scope was
added in response to concerns from SWFWMD as to the effects the
wetland mitigation might have on areas downstream of the constructed
wetlands. This report documents the findings of this investigation
and is being submitted jointly to both funding agencies. It summarizes
the collection of ydrologic data and current hydrologic conditions
of the basin. The report describes model set-up and calibration
for both the large scale domain and the near full detailed model
of Saddle Creek. The modal has been utilized in a productive capacity
for Hydrologic assessment of ecosystem restoration plans. Conclusions
as to the best restoration alternatives and scheduling final hydrologic
investigation for the engineering design phase are delayed pending
agency input. A complete hydrologic and hydraulic assessment of
17 bridges in Collier County was conducted as part of a preliminary
design phase for eventual replacement of these structures. Historical
bridge flows measured by the U.S.G.S. for the Big Cypress Swamp,
owned by the U.S. Park Service, were evaluated to determine statistical
flow and storm surge probabilities for tidal and non-tidal scour
calculations. This project was completed for the Florida Department
of Transportation under subcontract to Volkert Engineering Inc.
A study of erosion
and deposition in John's Pass and the development of a sediment scour/deposition
model for the Florida Department of Transportation.
Clearwater
Pass Sediment Scour and Deposition Study (1991).
A study of bridge type
and placement effects upon sediment scour and deposition in a tidal
inlet leading to the design of channels and an estimate of amounts
of maintenance dredging that would be required for those channels.
A more clear cause and effect relation between inlet and bay geometry,
winds, tides, waves, and littoral currents upon the scour and deposition
in inlets evolved. Project conducted for City of Clearwater.
Clearwater
Beach - Sand Key Bridge Scour Study (1988).
A model study of erosion
at the existing bridge over Clearwater inlet. The study included two-dimensional
hydrodynamic modeling with simple rational analysis for erodability.
Based on the findings of the model study and other criteria, it was
concluded that the bridge needed to be replaced. Project conducted
for City of Clearwater.
Pinellas Coast
Inlet Study (1987).
A mathematical modeling
study was conducted to determine the effect of the possible opening
of Dunedin Pass upon the stability of the remaining inlets in Clearwater
Harbor. This project was completed for Pinellas County Beaches and
Shores.
Willies Pass
Study (1987).
A prognostication of
the fate of the inlet created by hurricane Elena and the effect upon
Hurricane Pass. This project was completed for Pinellas County Beaches
and Shores.
Johns Pass
And Blind Pass Study (1987).
A combination study of Clearwater
Harbor and Boca Ciega Bay to determine the effect of opening a new
inlet in the Narrows between the two bays. The stability of Johns
Pass and Blind Pass were also investigated. This project was completed
for Pinellas County Beaches and Shores.
Water
Quality Studies
The Lake Tarpon Management
Model was developed to analyze the effects of basin land use changes
on lake eutrofication. This project was funded by the Pinellas County
Department of Environmental Management.
49th Street
Bridge Study (1989).
This program studied
the hydraulics and water quality in Tampa Bay as it would be impacted
by the proposed bridge. The work was conducted for Pinellas County.
Mullet Key
Study (1988).
A model was constructed
for Mullet Key to study water quality as influenced by changes proposed
for the release of treated wastewater. This model was later reactivated
at low cost to examine further changes; illustrating an advantage
of having the models online at the Center.
Tampa Wasteload
Allocation Study (1984).
A major Wasteload Allocation
Study (WLA) was undertaken by the Florida Department of Environmental
Regulation (now Department of Environmental Protection). USF-CMM
(now CMHAS) provided the modeling effort for the study. For this study,
the existing water quality model of Tampa Bay was upgraded to a state-of-the-art
ecological (eutrophication) model. Nutrient cycles-P, N, algae- Chlorophyll-a,
benthic exchange activity, several levels of grazing, BOD, salinity,
temperature and DO were included.
TBRPC Study
(1976).
A second modeling of
the basin wide pollution problem was completed for TBRPC. The study
area again incompassed Tampa Bay water bodies in the region including
the bays and coastal areas of Pinellas County.
Tampa Bay Pollution
Abatement Study (1973).
Successfully completed the
first in the nation, Pollution Abatement Study and Basin Plan authorized
under PL92-500. The work was undertaken for the TBRPC and paid for
by U.S. EPA. The effort developed models for all of the bays in
the Tampa Bay Region including Clearwater Harbor, St. Josephs Sound,
Anclote, Boca Ciega, Tampa Bay and Upper Old Tampa Bay. The models
included hydraulics and water quality. In 1973, the water quality
model was a BOD-DO model with nutrients treated as conservative
substances (a common practice at the time, now known to be quite
inadequate). Salinity and heat exchange thermal models were also
developed and used to site a power plant in Pinellas, Hillsborough,
and Manatee Counties. Models were also developed for the bays and
coastal waters of Pasco, Hillsborough, Manatee, and Sarasota Counties.
This study provided the basis for an optimized system of regional
waste treatment plants for the five county region
Wetland
Studies
Efficiency
of Wetlands for Stormwater Treatment and Management (1993).
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Last modified
on Sunday February 28, 2005.
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