Hurricane Matthew Impacts to Jacksonville Beaches
Kevin Bodge & Steven Howard, Olsen Associates Inc. with Tom Fallin, City of Jacksonville Jason Harrah, US Army Corps of Engineers
olsen olsen olsen olsen Jacksonville Beach -- During Hurricane Matthew, October 7, 2016
olsen Duval County Shore Protection Project
Amelia Island
Nassau Sound
Ft. George Inlet
St. Johns River Mayport NAS
Tallyrand Jacksonville Atlantic Beach Neptune Beach Offshore Borrow Areas Jacksonville Beach
St. Johns County
olsen Late 1950’s/1960 Sept 1964
Jan 1965 1978
olsen 0 100 200 300 400 500 600 700 800 900 +20 Project Authorized - 1965 60’’ ELEV. 11.0 Initial Construction – 1978/80 +10 Renourished at ~5 to 6 year intervals M.H.W. 5.2 DESIGN BEACH Existing seawall 0 Emergency toe protection following 1962 Northeaster and PRE-PROJECT -10 hurricane Dora (1964)
-20 US Army Corps of Engineers Authorized Beach ProjectJacsonville District Duval County, Florida Shore Protection Project
olsen BEACH PROFILE & FILL PERFORMANCE (Duval County)
Duval County, FL 18th St, Atlantic Beach 20 SEAWALL R-46
10
MHW 0 1974 MLW Elevation (Feet-NGVD)
-10 0 100 200 300 400 500 600 Offshore Distance (Feet)
olsen BEACH PROFILE & FILL PERFORMANCE (Duval County)
Duval County, FL 18th St, Atlantic Beach 20 SEAWALL R-46
10
1990 MHW 0 1974 MLW Elevation (Feet-NGVD)
-10 0 100 200 300 400 500 600 Offshore Distance (Feet)
olsen BEACH PROFILE & FILL PERFORMANCE (Duval County)
Duval County, FL 18th St, Atlantic Beach 20 SEAWALL R-46
10 1995 1990 MHW 0 1974 MLW Elevation (Feet-NGVD)
-10 0 100 200 300 400 500 600 Offshore Distance (Feet)
olsen BEACH PROFILE & FILL PERFORMANCE (Duval County)
Duval County, FL 18th St, Atlantic Beach 20 SEAWALL R-46 Dune Authorized Design
10 July 2012
1990 MHW 0 1974 MLW Elevation (Feet-NGVD)
-10 0 100 200 300 400 500 600 Offshore Distance (Feet)
olsen June 1970 Aug. 1978
8th Street Atlantic Beach March 2010
olsen JACKSONVILLE BEACH, 1962
olsen JACKSONVILLEJACKSONVILLE BEACH,BEACH, 20111962
olsen JACKSONVILLE BEACH Summer 1973
olsen JACKSONVILLE JACKSONVILLE BEACH BEACH February 2011 Summer 1973
olsen Post-Hurricane Matthew – October 2016
olsen 15 Pre-Storm 12th Street Atlantic Beach 10
5 seawall Mean High Water Level Post-Storm 0
-5
-100 0 100 200 300 400 500 feet
olsen 15 Pre-Storm 12th Street Atlantic Beach 10
5 seawall Mean High Water Level Post-Storm 0
-5
-100 0 100 200 300 400 500 feet
Cedar Street Neptune Beach 15 Pre-Storm 10
5 seawall Post-Storm Mean High Water 0
-5 -100 0 100 200 300 400 500 feet
olsen Alongshore Storm Erosion to Upper Beach
1939
olsen Alongshore Storm Erosion to Upper Beach
-7.1 1939 -2.3
olsen Alongshore Storm Erosion to Upper Beach
-3.0 -7.1 -8.5 1939 -2.3
olsen Alongshore Storm Erosion to Upper Beach
Average total = -10.1 cy/ft Avg total = -10.8 cy/ft (NOT renourished pre-storm) (renourished pre-storm)
-10.1 -10.8 -3.0 -7.1 -8.5 1939 -2.3
olsen 15 Dune Renourishment Pre-Storm 12th Street Atlantic Beach 10 Beach Renourishment
5 seawall Mean High Water Level Post-Storm 0
-5
-100 0 100 200 300 400 500 feet
Dune Renourishment Cedar Street Neptune Beach 15 Pre-Storm 10 Beach Renourishment 5 seawall Post-Storm Mean High Water 0
-5 -100 0 100 200 300 400 500 feet
olsen POST-HURRICANE MATTHEW SITUATION
• 700,000 cubic yards of ongoing 2016 beach renourishment, of which the southern 7000-ft was completed pre-storm
• +80,000 cy storm erosion to renourishment template
• +208,000 cubic yards of dune erosion
• Corps of Engineers authorized only for beach renourishment
• City must contribute funds for dune renourishment
• Beach renourishment advances ~500 feet per day 15 Dune Renourishment Pre-Storm 10 Beach Renourishment
5 seawall Mean High Water Level Post-Storm 0
-5
-100 0 100 200 300 400 500 feet
Dune Renourishment
15 Pre-Storm 10 Beach Renourishment 5 seawall Post-Storm Mean High Water 0
-5 -100 0 100 200 300 400 500 feet
olsen Dune Repair Design
Dune Elevation +15.5 +14.5 +14.5
Dune Toe Location
olsen Dune Repair Design
Dune Slope
2.5 1
Pre-Storm Profiles
olsen Dune Repair Design
Slope up/down to intersect
+14.5 or +15.5
2.5 1 +8.2 SPP Berm Fill
CONSTRUCTION BASELINE CONSTRUCTION DISTANCE TO TOE
DUNE PAYMENT = ALL VOLUME PLACED ABOVE +8.2’
olsen Dune Repair Design
Flat crest +14.5 or +15.5
2.5 1 +8.2 SPP Berm Fill
CONSTRUCTION BASELINE CONSTRUCTION DISTANCE TO TOE
DUNE PAYMENT = ALL VOLUME PLACED ABOVE +8.2’
olsen Dune Repair Design
35 ft +14.5 or +15.5
2.5 1 +8.2 SPP Berm Fill
CONSTRUCTION BASELINE CONSTRUCTION DISTANCE TO TOE
DUNE PAYMENT = ALL VOLUME PLACED ABOVE +8.2’
olsen EXAMPLE OF DUNE REPAIR TEMPLATE FROM PLANS
Dune Template Pre‐Storm (5/2016)
Beach Fill Template
Post‐Storm (10/2016)
Dune Template Pre‐Storm (5/2016)
Beach Fill Template
Post‐Storm (10/2016) 2016 Project Renourishment
• Federal = 61.6% $9.2M
• State of Florida = 18.0% $2.7M $14.9 M
• City of Jacksonville = 20.4% $3.0M
• City of Jacksonville Dune = 100% +$7.5M
olsen Hurricane Matthew Response (Oct-Nov 2016)
Sun Mon Tue Wed Thu Fri Sat Oct 2345678 Construction since 20 Sept, 2016 Storm Hurricane Demobilize Matthew Southern 7500-ft completed 9101112131415 Inspect Beach Dune Initiate Beach; Survey data Beach Survey completed Renourish Repair Plan Consult Meeting resumes Drafted with GLDD 16 17 18 19 20 21 22 City Brief Mayor, Governor, USACE HQ re: need for legislation prompt action entered 23 24Meetings 25 2626 2 27 28 29 and City Corps modifies approves construction $7.5M contract
30 31 Nov 1City funds 2 Dune 3 4 5 provided to repairs Corps begin
olsen Dune Reconstruction (Neptune Beach) olsen olsen Dune Vegetation out for bid, for 200,000 cubic yards of post-dune reconstruction sand and ~600,000 sea (Example illustration) oat plants to restore the dune erosion along the 7-mile project area from north Atlantic Beach to south Jacksonville Beach.
olsen BEACH & DUNE REPAIR PLAN
Hanna Park
Dune & beach fill – May 2017: 1.5 miles
Atlantic Beach
Neptune Beach Dune and beach fill – completed: 2 miles
PIER Jacksonville Dune fill & add’l beach fill – July 2017: 3 miles Beach
olsen Hurricane Matthew Impacts to Jacksonville Beaches
Kevin Bodge & Steven Howard Olsen Associates, Inc., Jacksonville, FL with Tom Fallin, City of Jacksonville Jason Harrah, USACE – Jacksonville District