Sebastian Inlet: Yesterday and Today

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Presentation transcript:

Sebastian Inlet: Yesterday and Today By, Doug Piatkowski

Background Man made cut dividing Brevard and Indian River counties Not federally maintained waterway Maintained as navigable waterway for vessels

History 1886-1924: - First recorded attempt in 1886 by Captain David O. Gibson by hand - Too small scale to maintain a stable inlet - 1919: Sebastian Inlet tax district – responsible for maintenance 1924-1942: - Remained unstable - Initial hard substrate protection (jetties and bulkhead) - Closed by Northeaster

History 1948-present: Inlet reopened: new channel dredged in NE/SW direction at $50,000 – tidal prism increase 2 X 1955: Jetty extensions completed 1970: Final extension completed ($560,000) new old

Inlet Effects Jetty Construction PROS: - Habitat for many fish species - Large fishing attraction - Sand bar and wave refraction – Surfing “First Peak” - Monster hole – Ebb tidal delta

“First Peak” “sick” barrells Fishing Refraction

Inlet Effects CONS: - Jetties prevent littoral drift from North to South - Erosion of southern end (lawsuit) - Inlet halting about 75,000 cubic yrds/year - Constant maintenance necessary

Monster Hole Ebb Tidal Delta Erosion of south end Monster Hole Ebb Tidal Delta

Jetty Damage

Repair or Rebuild Jetty damage from storm events: “Halloween Swell” Hurricane Floyd: close last 79 ft Loosen foundation and rust rebar $7 million: rebuild or repair north jetty: Debate - maintenance and protection Begin: summer 2001 Fourteen months to complete

References Eager, W. 13 February 2000. Stuart News Company Press Journal. “Recalling the early days at Sebastian Inlet State Park.” Sports; Pg. B10. Kaiser, M. 21 May 2000. Stuart News Company Press Journal. “A line in the wind.” Indian River County; Pg. A1. Mehta, A.J., Wm. D. Adams, and C.P. Jones. 1976. Sebastian Inlet: Glossary of Inlets Report #3. Sea Grant. Gainsville, FL. 52p. Meseroll, D. 2000. Eastern Surf Magazine. Right Coast Media, INC. Indialantic, FL. p.50. Press Journal Staff. 11 June 2000. Stuart News Company Press Journal. “Inlet officials consider fate of jetty.” Indian River County; Pg. D6. Robinson, D. 9 June 2000. Stuart News Company Press Journal. “Inlet’s jetty juncture: repair or replace?” Indian River County; Pg. A1. Robinson, D. 26 January 2000. Stuart News Company Press Journal. “Study: wind, waves depositing sand south of inlet.” A section; Pg. A8. Robinson, D. 26 January 2000. Stuart News Company Press Journal. “Report: inlet management plan has holes.” A section; Pg. A8. http://www.tidelines.com/tides/florgulf.html http://srh.noaa.gov/mlb/hwofiles/lili.htm

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