More Information:
 
Hydraulic Analysis of St Joseph Bay
 
St Joseph Bay is formed by a curving, rapidly eroding sand spit with the prominent Cape San Blas located at its southern tip. A narrow section of the peninsula at a site called Stump Hole will likely breach in the near future. The new inlet will bisect the only road available to peninsula residents and visitors to St Joseph Peninsula State Park. Tidal hydraulic data were collected to identify and quantify the hydrodynamic processes governing the Bay system and to calibrate and verify a numerical hydrodynamic circulation model (ADCIRC) for predicting the long-term fate of a new inlet. Measurements showed that sub-tidal long wave energy (associated with the passage of cold fronts) with periods near the resonant seiche modes of the Bay was actually the dominant hydrodynamic forcing that would control the inletís fate over short time scales.

Client:
Florida Department of Transportation

Reports:
"Large Amplitude Seiche in St Joseph Bay, FL - Observation and Implications"
"Observation and Implications of Long Waves in St Joseph Bay, FL"

 

Aerial photo of threatened section of SR 30 E at location of likely breach at Stump Hole

 

Plot showing measured (black) and predicted (purple) water elevation difference between St Joseph Bay and the Gulf

 

 

Reports:
"Large Amplitude Seiche in St Joseph Bay, FL - Observation and Implications"
"Observation and Implications of Long Waves in St Joseph Bay, FL"

 

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