Department of Land and Natural Resources Extension Activities Brad Romine Coastal Management...
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Department of Land and Natural Resources Extension Activities Brad Romine Coastal Management Specialist, Extension Agent University of Hawaii Sea Grant
Department of Land and Natural Resources Extension Activities
Brad Romine Coastal Management Specialist, Extension Agent
University of Hawaii Sea Grant College Program Hawaii Department of
Land and Natural Resources (DLNR) Office of Conservation and
Coastal Lands (OCCL) Coastal Lands Program
Slide 2
Outline 1.The DLNR-OCCL Coastal Lands Program and history of
the Sea Grant extension activities. 2.My background and research
interests. 3.Ongoing and future projects with DLNR and Sea Grant.
Coastal Lands Program
Slide 3
DLNR Coastal Lands Program DLNR is the lead state agency for
coastal erosion management and beach conservation. Coastal Lands
Program (CLP) developed, empowered, and funded by the Coastal
Erosion and Management Plan (COEMAP, 1999): Wide agreement that
change is needed in our system of coastal land management Develop a
consistent and uniform policy of erosion management at the state
level. Coastal Lands Program
Slide 4
Goals of the Coastal Lands Program Enhancing Hawaiis coastal
communities resilience to natural hazards and climate change
impacts - Provide technical support and expertise to the DLNR-OCCL.
Assist OCCL in coastal land use permit review and responsible
coastal land use planning to mitigate and avoid coastal hazards.
Manage and review applications for coastal hazard mitigation and
beach restoration (SSBN). Coastal Lands Program
Slide 5
Goals of the Coastal Lands Program Assist OCCL and other
agencies in incorporating the latest scientific data on coastal
hazards in coastal land use planning. Develop and implement beach
management projects and research on coastal processes and hazards
with other agencies and UH. Conduct targeted extension activities
to relay current, informative coastal hazard data and
recommendations to DLNR, other agencies, and the public. Coastal
Lands Program
Slide 6
History of Sea Grant Extension and the CLP 2003 Dolan Eversole
hired by Sea Grant and DLNR as a coastal geologist and extension
agent. Focus on implementing COEMAP recommendations, including
erosion management alternatives and coastal hazards resiliency.
Problems with states shoreline certification and setback procedures
soon become apparent. 2005 Chris Conger hired as Shoreline
Specialist refined shoreline certification approach. 2010 Dolan
moved to Coastal Storms Program, Chris moved up. 2011 Andy
Bohlander moves from B.I. extension to Shoreline Specialist. 2012
Chris moves on to Sea Engineering Coastal Lands Program
Slide 7
My Background 1998 B.S. Physical Geography, UC Santa Barbara
Spec. Earth Science, GIS, Remote Sensing 2008 M.S. Geology, UH
Spec. Coastal Geology, GIS and Photogrammetry Project: Historical
Shoreline Change: Southeast Oahu 2009-2012 Sea Grant Graduate
Trainee 2012 PhD (ABD) Geology, UH Spec. Coastal Geology, GIS in
Coastal Science Dissertation: Historical Shoreline Changes in the
Hawaiian Islands Coastal Lands Program
Slide 8
The Oahu Shoreline Change Atlas
http://www.soest.hawaii.edu/coasts/erosion/ Coastal Lands
Program
Slide 9
Historical Shoreline Changes in the Hawaiian Islands Fletcher
et al. (2012) http://pubs.usgs.gov/of/2011/1051/ Coastal Lands
Program
Slide 10
Erosion Dominates Shoreline Change in Hawaii All 70% -0.11
Kauai 71% -0.11 Oahu 60% -0.06 Maui 85% -0.17 Region % Eroding Avg.
Rate ( 0.01 m/yr) Fletcher et al, 2012; Romine et al. 2012 Coastal
Lands Program
Slide 11
Beach Loss Along Developed Coasts All 9% 21.5 Kauai 8% 6.0 Oahu
8% 8.7 Maui 11% 6.8 Region % of Beach Lost Km of Beach Lost -Nearly
all beaches lost were fronting coastal armoring. Fletcher et al,
2012; Romine et al. 2012 Coastal Lands Program
Slide 12
Armoring on Eroding Coasts Leads to Beach Narrowing and Loss on
Oahu Coastal Lands Program
Slide 13
*% of beach Coastal Lands Program Degraded (total) Beach
typeLostNarrowed armored72%29%43% unarmored53%1%52% Armoring on
Eroding Coasts Leads to Beach Narrowing and Loss on Oahu
Slide 14
Ongoing Research Headland beaches are substantially more
erosional than embayed beaches on Oahu. Temporal relations to
Late-Holocene and modern sea-level rise Spatial relations to
sand-filled channels in the nearshore reef Increased beach erosion
on Maui related, in part, to higher sea- level rise around Maui.
85% beach erosion on Maui vs. 71% Kauai, 60% Oahu Relative
sea-level rising 65% faster around Maui (subsidence) Sea-level is
already an important driver of shoreline change. Implications for
shoreline management as sea-level rise increases in this century.
Coastal Lands Program
Slide 15
Challenges for Coastal Erosion Management in HI The majority of
Hawaii beaches are eroding. Many miles of beach are substantially
narrowed or have been completely lost to erosion, mostly fronting
seawalls. Property and infrastructure is threatened by erosion and
inundation. Will only get worse with increasing sea-level rise and
continued economic pressure to develop coastal areas. Alternatives
for managing coastal erosion all have advantages and drawbacks no
one solution statewide. Coastal Lands Program
Slide 16
Coastal Armoring: Erosion Management Alternatives Protects
property, typically at the expense of the beach
Slide 17
Erosion Management Alternatives Coastal Lands Program Temporary
Erosion Control Geotextile sand bags.Biodegradable (Coir) bags and
blankets Temporary fix, Band-Aid
Slide 18
Erosion Management Alternatives Coastal Lands Program Beach
Replenishment and Beach Maintenance Expensive, limited sand
resources, maintenance required
Slide 19
Erosion Management Alternatives Coastal Lands Program Let the
beach erode? Coastal retreat? willing seller buyout? Legal and
financial means do not currently exist.
Slide 20
Small Scale Beach Nourishment Program (SSBN) Streamlined
permitting process for nourishment under < 10,000 cy. Good
alternative for individual homeowners and communities. Compatible
beach sand is expensive and in limited quantities. Requires
maintenance, repeat fills. Coastal Lands Program
Slide 21
Current SSBN Projects Coastal Lands Program Stables Rd.,
Kahului, Maui: on-going monitoring, maintenance Maui Lu Resort,
Kihei, Maui Poipu Beach Park, Kauai Kukuiula, Poipu, Kauai
Slide 22
CSP 2012 Proposal: Beach Vulnerability Rating (BVR) Rate beach
vulnerability of Oahu beaches to erosion and loss with sea-level
rise. Leverage existing coastal hazards data: erosion maps, blue
line, FEMA FIRM, USGS coastal hazards and new coastal inundation
models. Bridge gap between disparate beach hazard data, planners,
and community with targeted outreach Provide tools to aid coastal
land use planners (maps, recommendations) to improve resilience to
coastal erosion hazards with sea-level rise. Coastal Lands
Program
Slide 23
Kailua Beach Management Plan Continue, build on work by Dolan
and Conger. Survey results. Accreted lands issues. Dune management.
MOU for Kailua Beach Park maintenance. Coastal Lands Program
Slide 24
Waikiki Beach Management Plan Recent fill: Kuhio Royal Hawaiian
Grays beach Ft DeRussy Natatorium, Kapiolani Park Need for an
integrated management plan for whole of Waikiki beaches. Coastal
Lands Program
Slide 25
The Future of The Coastal Lands Program Coastal erosion and
hazards management will only become more important and more
challenging with increasing sea-level rise in the next few decades.
Must proactively plan for new development and redevelopment to
avoid coastal hazards. Will require cooperation between all
stakeholders: federal, state, county, private, public. Hawaiis
beaches are worth saving: Hawaii is a tourism-based economy based
around beaches. Beaches are central to Hawaiis image and culture.
Our children should be able to enjoy and be as inspired by Hawaiis
beaches as we are. Coastal Lands Program
Slide 26
SSBN Projects: Maui Lu Resort, Kihei Coastal Lands Program
Slide 27
SSBN Projects: Poipu Beach Park, Kauai Coastal Lands
Program
Slide 28
SSBN Projects: Kukuiula, Poipu, Kauai Coastal Lands
Program