Navigation Channel Effects on Estuarine Mean Water Level
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 148, Issue 2
Abstract
The traditional conceptual model of freshwater-dominated estuarine hydrodynamics states that long-term average within-estuary water level is elevated over long-term average sea level at the sea inlet(s) in order to push freshwater inflows seaward. At low freshwater inflows, other factors, including nonlinear tidal propagation, can cause either setup or setdown in the average estuary water level. The Cumberland Sound estuary straddles the Georgia–Florida state line. Deepening and widening of the Cumberland Sound entrance and interior channels from 1984 through 1988 increased channel dimensions by 25%–66%. A weight of evidence approach considering analytic, physical, and numerical models’ results, plus statistical analysis of observed MTL from 1953 through 2019 leads to the conclusion that the channel enlargements reduced a pre-existing Fernandina Beach MTL setdown of up to 0.02–0.05 m.
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Acknowledgments
Data used here were obtained from US Army Corps of Engineers and National Oceanic and Atmospheric Administration publications as cited in the text and listed in the references.
References
Blair, S., M. Ezell, H. Hall, and J. November. 2009. The St. Marys River Basin. Gainesville, FL: Univ. of Florida/. Accessed October 22, 2020. https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.637.9402&rep=rep1&type=pdf.
DiLorenzo, J. L. 1986. “The overtides and filtering response of inlet Bay systems.” Ph.D. thesis, Marine Sciences Research Center, State Univ. of New York.
Escoffier, F. F., and T. L. Walton Jr. 1979. “Inlet stability solutions for tributary inflow.” J. Waterways Harbors Div. 105 (4): 341–355.
Florida Climate Center. 2020. Climate data for Fernandina Beach. Tallahassee, FL: Florida State Univ. Accessed October 20, 2020. https://climatecenter.fsu.edu/climate-data-access-tools/downloadable-data.
Granat, M. A., and N. J. Brogdon. 1990. Cumberland Sound and Kings Bay pre-trident and trident hydrodynamic and sediment transport hybrid modeling, volume 1: Main text and appendices A, C, and D. Technical Rep. HL-90-21. Vicksburg, MS: US Army Engineer Waterways Experiment Station.
Granat, M. A., N. J. Brogdon, J. T. Cartwright, and W. H. McAnally Jr. 1989. Verification of the hydrodynamic and sediment transport hybrid modeling system for Cumberland Sound and Kings Bay navigation channel, Georgia. Technical Rep. HL-89-14. Vicksburg, MS: US Army Engineer Waterways Experiment Station.
Keulegan, G. H. 1967. Tidal flow in entrances: Water level fluctuations of basins in communication with the seas. Committee on tidal hydraulics. Technical Bulletin No. 14. Vicksburg, MS: US Army Engineers Waterways Experiment Station.
King, D. B. 1974. The dynamics of inlets and bays. Technical Rep. No. 22. Gainesville, FL: Coastal and Oceanographic Engineering Dept., Univ. of Florida.
Kraus, N. C., R. C. Faucette, and M. K. Rogan. 1997. Water-level analysis for Cumberland Sound, Georgia. Technical Rep. CHL-97-11. Vicksburg, MS: US Army Engineer Waterways Experiment Station.
McAnally, W. H., and M. A. Granat. 1991. Cumberland Sound and Kings Bays, pre-trident and basic trident channel hydrodynamic and sediment transport hybrid modeling; Volume II: Appendix B. Technical Rep. HL-90-21. Vicksburg, MS: US Army Engineer Waterways Experiment Station.
NOAA (National Oceanic and Atmospheric Administration). 2020a. “Tides and currents, water levels. Station 8720030 Fernandina Beach, FL.” Accessed September 21, 2020. https://tidesandcurrents.noaa.gov/waterlevels.html?id=8720030&units=standard&bdate=20180918&edate=20180919&timezone=GMT&datum=MLLW&interval=6&action=data.
NOAA (National Oceanic and Atmospheric Administration). 2020b. “Center for Operational Oceanographic Products and Services (CO-OPS) environmental measurement systems, sensor specifications and measurement algorithm.” Accessed October 7, 2020. https://tidesandcurrents.noaa.gov/publications/CO-OPS_Measurement_Spec.pdf.
NOAA (National Oceanic and Atmospheric Administration). 2020c. “Sea level trends.” Accessed October 7, 2020. https://tidesandcurrents.noaa.gov/sltrends/.
Sassi, M. G., and A. J. F. Hoitink. 2013. “River flow controls on tides and tide-mean water level profiles in a tidal freshwater river.” J. Geophys. Res.: Oceans 118 (9): 4139–4151. https://doi.org/10.1002/jgrc.20297.
USACE. 1986. Annual report of the Chief of Engineers on Civil Works activities. Washington, DC: USACE.
USACE. 2020. Sea level change calculator. Washington, DC: USACE. Accessed October 7, 2020. http://corpsmapu.usace.army.mil/rccinfo/slc/slcc_calc.html.
Walton Jr, T. L. 2002. “Setup and setdown in tidal bays and wetlands.” Estuarine Coastal Shelf Sci. 55 (5): 789–794. https://doi.org/10.1006/ecss.2001.0940.
Winterwerp, J. C., Z. B. Wang, A. Van Braeckel, G. Van Holland, and F. Kösters. 2013. “Man-induced regime shifts in small estuaries—II: A comparison of rivers.” Ocean Dyn. 63 (11–12): 1293–1306. https://doi.org/10.1007/s10236-013-0663-8.
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© 2021 American Society of Civil Engineers.
History
Received: Nov 16, 2020
Accepted: Oct 13, 2021
Published online: Dec 1, 2021
Published in print: Mar 1, 2022
Discussion open until: May 1, 2022
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