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Los Angeles District and South Pacific Division
CERB June 4, 2009
Technical Tools for Regional Sediment Management
Susan Ming – USACE, Los Angeles DistrictClifton Davenport – CSMW/CA Geological Survey
Los Angeles District and South Pacific Division
CERB June 4, 2009
A “SUPER-REGIONAL” APPROACH
Los Angeles District and South Pacific Division
CERB June 4, 2009
ROAD TO SOLUTIONS
Urbanization of Watershed
Dam
Sand held in place by future urbanization is
compensated through projects or fees. Less Beach
Erosion
Beach replenished with sand dredged from offshore or transported from inland projects.
Harbor
Sand Trapped by Harbor Structures
Sand from harbors placed on beaches in need.
Sand and Gravel Mining Sand loss
compensated through projects or fees.
OceanOcean
Sediment Trapped Behind Dams and
Debris Basins
Regional Sediment (Sand) Management
Mining moved out of river. More sand transported to coast.
More Sand Reaching Coast
Sediment excavated and bypassed downstream.
Reservoir
Los Angeles District and South Pacific Division
CERB June 4, 2009
TECHNCIAL TOOL CATEGORIES
•Educational and Informational Reports and Data
•Computer Based Tools
•Coastal RSM Plans
Los Angeles District and South Pacific Division
CERB June 4, 2009
•Biological Impacts Analysis and Recommendations
•Cumulative Loss of Sediment Due to Dams
•The Economics of Regional Sediment Management in Ventura and Santa
Barbara Counties•Beaches, Littoral Drift and
Littoral Cells -understanding California’s Shoreline and Beach Nourishment
•Beach Restoration Regulatory Guide
Sand Compatibility and Opportunistic Use Program (SCOUP)
Educational and Informational Reports and Data
•SMP Status Report and Brochure
•Development of Sand Budgets for California’s Major Littoral Cells
•Tijuana Estuary Demonstration Program
•Sources, Dispersal & Fate of Fine Sediment Supplied to Coastal California
•Public Outreach & Workshops•Conceptual Plan to Capture/Reuse
Coastal Sediments Lost to Submarine Canyons
•California Beach Erosion Assessment Survey (CBEAS)
Los Angeles District and South Pacific Division
CERB June 4, 2009
•CSMW Website: www.dbw.ca.gov/csmw/default.aspx•Spatial data viewer (WebMapper) •GIS Database Library•Coastal References Searchable Database•Coastal Sediment Benefit Analysis Tool (CSBAT)
Computer Based Tools
Los Angeles District and South Pacific Division
CERB June 4, 2009
•Completed and Adopted by Regional Entities• San Diego County Region (SANDAG)• Santa Barbara and Ventura Counties (BEACON)• Southern Monterey Bay (AMBAG)
• Starting this year• Los Angeles County (LA County Beaches and
Harbors/Public Works) • Orange County (County of Orange)• Eureka Littoral Cell (Humboldt Bay Harbor, Recreation
and Conservation District) • San Francisco Littoral Cell (BCDC and ABAG)• Santa Cruz Littoral Cell (AMBAG)
Coastal RSM Plans (CRSMPs)
Los Angeles District and South Pacific Division
CERB June 4, 2009
www.dbw.ca.gov/csmw/default.aspx
Draft California Beach Erosion Assessment Survey (CBEAS) 2009
California Beach Erosion Assessment Survey
BECAs San Diego County
CERB June 4, 2009
Beach Erosion Concern Areas and Marine Protected Areas
CERB June 4, 2009
Potential RSM and MPA Locations
CERB June 4, 2009
Coastal RSM Data
CERB June 4, 2009
Wetlands, CZB and Sea Level Rise 2100 (PRI)
CERB June 4, 2009
CERB June 4, 2009
•Receiver site ranking and selection•Acceptable methods of characterizing beach and source sands;•Environmentally-responsible use of both optimum and less-than-
optimum materials;•Appropriate placement techniques; and•Permitting needs of local governments and permitting agencies.
SAND COMPATIBILITY AND OPPORTUNISTIC USE PROGRAM (SCOUP)
CERB June 4, 2009
SITE Value Score Value Score Value Score Value Score Value Score Value Score Value Score Value Score Value Score Value Score
Site A 2 8 4 16 5 25 5 25 5 25 5 25 4 20 2 6 5 20 5 20
Site B 3 12 3 12 5 25 5 25 5 25 5 25 5 25 1 3 5 20 5 20
Site C 4 16 1 4 3 15 4 20 4 20 3 15 5 25 2 6 5 20 5 20
Site D 4 16 1 4 1 5 3 15 2 10 1 5 5 25 2 6 2 8 5 20
Site E 3 12 4 16 2 10 3 15 1 5 3 15 5 25 4 12 3 12 5 20
Criteria Weighted Value 4
Nee
d fo
r San
d
Value Score Value Score Value Score Value Score Value Score Value Score Value Score Value Score Value Score
3 9 1 2 5 10 2 4 5 10 5 5 4 20 5 20 4 20 290 2
5 15 5 10 5 10 2 4 4 8 4 4 4 20 4 16 5 25 304 1
2 6 3 6 5 10 3 6 1 2 3 3 5 25 3 12 4 20 251 3
5 15 1 2 5 10 3 6 1 2 2 2 5 25 4 16 3 15 207 5
5 15 5 10 2 4 2 4 1 2 2 2 3 15 5 20 5 25 239 4
2 2 1M
axim
um N
atur
al S
and
Rete
ntio
n
Prox
imity
to N
atur
al
Sand
Sup
ply
(cre
ek o
r riv
er)
Prox
imity
to P
oten
tial
Stoc
kpile
Loc
atio
ns
53 2 2
Supp
ort f
rom
Loc
al
Com
mun
ity
Min
imal
Impa
ct to
Cre
ek
and
Rive
r Mou
ths
Prev
ious
Rec
eive
r Site
(P
erm
ittab
ility
)
Feed
er B
each
for
Down
coas
t Bea
ches
RANK
TOTAL SCORE
Prox
imity
to P
oten
tial
Sour
ces
4
Loca
l Age
ncy
Will
ingn
ess
to P
erm
it Si
te
5
SCOUP Receiver Site Evaluation Matrix
• Pre-permitted opportunistic programs
• SCOUP 1 and 2
• Southern Monterey Bay
CERB June 4, 2009
Coastal Sediment Benefit Analysis Tool (CSBAT)
• A GIS-based management
support tool for decision
makers to evaluate future
dredging and disposal
options along the coast.
• Sources – harbors, dams,
inland, offshore
• Tool looks at recreation
benefits and costs of
transporting sediment to
various locations.
• Santa Barbara, Ventura,
Monterey and San Diego
Counties
CERB June 4, 2009
