Oregon Inlet Event 4, Q2 3/22/2023

EVENT 4 - Q2 2023 OREGON INLET
CHANNEL MAINTENANCE PROJECT
A
PROJECT AREA
BODIE
ISLAND
OREGON
INLET
ATLANTIC
PEA OCEAN
ISLAND
PAMLICO SOUND
0�00
GRAPHIC SCALE IN FT
RALEIGH DVLNP
CHARLOTTE &-,\N GPI
ACKSONVILLE-
N.r.s. CAPE FEAR
NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
DARE COUNTY, NORTH CAROLINA
ECT LOCATION
CAPE HATTERAS
REHEAD CITY
LOOKOUT
ATLANTIC
OCEAN
91.10mriau00
1 COVER SHEET
2 PROJECT OVERVIEW
3 OREGON INLET & OCEAN BAR CHANNEL PLAN VIEW
q OREGON INLET TO HELLS GATE ALTERNATE CHANNEL PLAN VIEW
5 OREGON INLET TO HELLS GATE WEST AND OLD HOUSE CHANNEL PLAN VIEW
6 OREGON INLET & OCEAN BAR CHANNEL CROSS SECTIONS A -A', B-B' & C-C'
7 OREGON INLET TO HELLS GATE ALTERNATE CHANNEL CROSS SECTIONS D-D', E-E' & F-F.
8 OLD HOUSE CHANNEL RANGE 1 CROSS SECTIONS G-G' AND H-H'
GENERAL NOTES:
1. COORDINATES ARE IN FEET BASED ON NORTH CAROLINA STATE PLANE COORDINATE SYSTEM, NORTH AMERICAN
DATUM 1983, (NAD83).
2. ELEVATIONS ARE IN FEET AND ARE REFERENCED TO MLLW.
3. DATE OF AERIAL PHOTOGRAPHY: FEBRUARY 15, 2020.
LEGEND
0
A -
DREDGE AREA
INSHORE DISPOSAL AREA
PERMITTED CHANNEL CORRIDOR
SHIPWRECK LOCATION
SHEET
1
OF 8

1.
PLACEMENT OF DREDGE SPOIL MATERIAL ON DISPOSAL
ISLANDS MN, L, AND C IS NOT INCLUDED IN THE
o
PROPOSED ACTION.
o
2.
PROPOSED OREGON INLET AND OCEAN BAR CHANNEL
DREDGE AREAS ARE NOT FIXED AND RATHER FOLLOW DEEP
WATER AT TIME OF MAINTENANCE. LOCATION SHOWN IS
REPRESENTATIVE ONLY AND WILL CHANGE BASED ON
-
BATHYMETRYATTIMEOFMAINTENANCE.
3.
ALTERNATE ROUTE PORTION OF OREGON INLET TO HELLS
GATE CHANNEL DREDGE AREA SHOWN ON SHEETS 3 AND 4\
\
IS FIXED FOR EVENT 4.
\
4.
PLACEMENT OF DREDGE SPOIL MATERIAL WILL BE
PERMITTED WITHIN PROPOSED INSHORE DISPOSAL AREAS
N 763000
'
SHOWN ON SHEETS 3 AND 4AND IN THE NEARSHORE,�
DISPOSAL AREA OFFSHORE PEA ISLAND IN PROXIMITY TO
"
THE-14' MLLW CONTOUR.
i
\
w
\0
MARC BASNIGHT BRIDGE
uvwjd[MFERMITTED CHANNEL
qw ORRIDOR
DISPOSAL
ISLAND "C"
DISPOSAL
ISLAND "L"
OLD HOUSE CHANNEL
RANGE 1 /
DISPOSAL
ISLAND"MN" /
/ OREGON INLET TO
L. HELLS GATE CHANNEL
(WEST)
ou PAMLICO
SOUND IN&
NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
OREGON INLET TO
HELLS GATE CHANNEL
(ALTERNATE ROUTE)
i
ATLANTIC
OCEAN
OREGON INLET AND
OCEAN BAR CHANNEL
OF HERBERT C.
3RIDGE TO REMAIN
o1250 2500
GRAPHIC SCALE IN FT
10
>
t
0
SHEET
2
OF 8

- OREGON INLET TO -
HELLS GATE CHANNEL /
(ALTERNATE ROUTE) '':,,,7
i
.�,.% MARC BASNIGHT
PAMLICO I BRIDGE/
SOUND
/
OREGON
INLET
0
r \
f
O
ER \
PORTIN OF HERBERT C.
BONNBRIDGE TO REMAIN
y ELIZABETH CHRISTINE
d
0
aiPEA ISLAND
PROPOSED
INSHORE P
DISPOSAL AREA ogP
fly CO
NOT FOR CONSTRUCTION 5
FOR REGULATORY REVIEW ONLY
*C
o p
� U
OREGON INLET AND —
OCEAN BAR CHANNEL
RIG
NO DREDGE ZONE
LADY
]GEL DAWN
VOTE:
t7
L. LOCPSION OF THE PROPOSED DREDGE AREA OF THE CHANNEL Z
REPRESENTS CONDITIONS ON THE DATES OF MOST RECENT K
SURVEYS (OCTOBER 21, 2022, DECEMBER 3, 2022 AND W
W
FEBRUARY 3, 9, & 2023). IF CONDITIONS DICTATE A Z Z
CHANGE IN THE PROPOSED MAINTENANCE AREA DURING q -
NAVIGATION
CHANGES WILL BE COORDINATED WITH USACE W Z
NAVIGATION FDREDGE
BRANCH AND REGULATORY AGENCIES.
2. PLACEMENT OF DREDGE SPOIL MATERIAL WILL BE PERMITTED Z 0
IN THE PROPOSED INSHORE DISPOSAL AREA WHERE DEEP y�
SCOUR HOLES AROUND THE BONA ER BRIDGE EXIST AND IN V V
THE NEARSHORE DISPOSAL AREA OFFSHORE PEAISLAND. W
3. NO SIDECAST DREDGING ACTIVITIES SHALL OCCUR FROM F p
ou
APRIL 1 TO JULY 31 WITHOUT THE NOTIFICATION AND K K o
APPROVAL OF THE NC DCM AND THE USACE WILMINGTON 6 Z o
DISTRICT REGULATORY DIVISION. LL '0-
1. BATHYMETRIC CONTOURS GENERATED FROM SURVEY DATA F WO m
COLLECTED BY THE USACE WILMINGTON DISTRICT ALONG THE y, o rc
OREGON INLET TO HELLS GATE CHANNEL WEST &ALTERNATE QO ? z
ROUTE (FEBRUARY 9,2023), SURROUNDING OREGON INLET £_
BRIDGE (FEBRUARY 3, 2023) AND SURVEY DATA COLLECTED BY tl ^ 3 w
E]E DREDGING ALONG OCEAN BAR CHANNEL(DECEMBER 3, ]p
2022) AND INSHORE DISPOSAL AREA (FEBRUARY 19, 2023). e
BOTTOM OF CUT/ CHANNEL COORDINATE TABLE 3j
Point ID Northing Easting Elevation
A 758820.79 3033832.58 -16.0
B 759158.57 3033618.32 -16.0
C 756940.25 3030121.08 -16.0
D 755489.07 3029079.69 -16.0
E 755255.85 3029404.67 -16.0
F 756644.02 3030400.84 -16.0
/ o t3 Ey i
ATLANTIC
OCEAN
as
/ e eam
PERMITTED CHANNEL
1,0
/ CORRIDOR
ou
00. aiw
3 �3 ��
om5
/ o
ww
g
/ 0�500�1000
GRAPHIC SCALE IN IT SHEET
3
OF 8

a
ON INLET TO HELLS
CHANNEL(WEST)
Y
BOTTOM OF CUT/ CHANNEL COORDINATE TABLE
Point ID
Northing
Easting
Elevation
G
754588.78
3020086.07
-10.0
H
754080.12
3020977.19
-10.0
I
752790.13
3022559.39
-10.0
1
752490.86
3023239.57
-10.0
K
752212.77
3024055.38
-10.0
L
751335.76
3025431.72
-10.0
M
i
j N
751549.12
751861.54
3026678.42
3027165.69
-10.0
-10.0
O
752476.00
3027723.48
-10.0
P
752543.21
3027649.44
-10.0
Q
fi R
751938.57
751644.26
3027100.55
3026641.53
-10.0
-10.0
F
5
751440.63
3025452.90
-10.0
T
752303.55
3024099.00
-10.0
E
fii U
752584.12
3023275.90
-10.0
j V
752876.20
3022612.08
-10.0
W
754162.86
3021033.96
-10.0
X
fi
754675.63
3020135.64
-10.0
NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
o '
E'
I
Ov
GRP.PHIC SCALE IN IT �O�'
MARC BASNIGHT
\l \ BRIDGE
////
PERMITTED CHANNEL
CORRIDOR
I
OREGON INLET TO
HELLS GATE CHANNEL
(ALTERNATE ROUTE)
NOTE:
O
1. ALTERNATE ROUTE PORTION OF OREGON
?
INLET TO HELLS GATE CHANNEL DREDGE
AREA IS FIXED FOR EVENT 4.
pj �j
2. PLACEMENT OF DREDGE SPOIL MATERIAL
Z Z
WILL BE PERMITTED IN THE PROPOSED
INSHORE DISPOSAL AREA WHERE DEEP
Z Q
W Z
SCOUR HOLES AROUND THE BONNER BRIDGE
EXIST AND IN THE NEARSHORE DISPOSAL
Z G
AREA OFFSHORE PEA ISLAND.
FQ
3. NO SIDECAST DREDGING ACTIVITIES SHALL
W
-
OCCUR FROM APRIL 1 TO JULY 31 WITHOUT
-
THE NOTIFICATION AND APPROVAL OF THE
=
f
o
ou
NC DCM AND THE USACE WILMINGTON
W
o
DISTRICT REGULATORY DIVISION.
LL Z
4. BATHYMET RIC CONTOURS GENERATED FROM
o
SURVEY DATA COLLECTED BY THE USACE
O
m z_
WILMINGTON DISTRICT ALONG THE OREGON
m
o
INLET TO HELLS GATE CHANNEL WEST &
Q
z
ALTERNATE ROUTE (FEBRUARY 9,2023),
C
.13
SURROUNDING OREGON INLET BRIDGE
(FEBRUARY 3, 2023) AND SURVEY DATA
COLLECTED BY BE DREDGING ALONG THE
2
INSHORE DISPOSAL AREA (FEBRUARY 19,
I F,
c
92
2023).
11 ..
un
PORTION OF
HERBERT C. BONNER BRIDGE N
TO REMAI PROPOSED INSHORE
!v, DISPOSALAREA

NOTE:
1. NO DREDGING ANTICIPATED TO BE CONDUCTED IN Q2-2023
ALONG THE OREGON INLET TO HELLS GATE CHANNEL (WEST)
SHOWN ON THIS SHEET.
2. NO SIDECP.ST DREDGING ACTIVITES SHALL OCCUR FROM
APRIL 1 TO JULY 31 WITHOUT THE NOTIFICATION AND
APPROVAL OF THE NC DCM AND THE USACE WILMINGTON
DISTRICT REGULATORY DIVISION.
3. OLD HOUSE CHANNEL RANGE 1 DREDGE AREA IS FIXED FOR
EVENT 4.
4. PLACEMENT OF DREDGE SPOIL MATERIAL WILL BE PERMITTED
IN THE PROPOSED INSHORE DISPOSAL AREA WHERE DEEP
SCOUR HOLES AROUND THE BONNER BRIDGE EXIST AND IN
THE NEARSHORE DISPOSAL AREA OFFSHORE PEA ISLAND.
5. BATHYMETRIC CONTOURS GENERATED FROM SURVEY DATA
COLLECTED BY THE USACE WILMINGTON DISTRICT ALONG
THE OREGON INLET TO HELLS GATE CHANNEL WEST &
ALTERNATE ROUTE(FEBRUARY 9,2023) AND OLD HOUSE
CHANNEL(FEBRUARY 15, 2023).
11111�-
DISPOSAL
ISLAND "MN"
PAMLICO
SOUND
PERMITTED CHANNEL
CORRIDOR
BOTTOM OF CUT/ CHANNEL COORDINATE TABLE
Point ID
Northing
Easting
Elevation
Y
752705.36
3012655.48
-12.0
Z
752653.02
3012743.06
-12.0
Z1
750037.72
3011845.16
-12.0
Z2
750081.22
3011754.32
-12.0
NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW 0NLY
ISLAND "L"
vl<
H Y
�j Z
OLD HOUSE CHANNEL
RANGE 1
OREGON INLET TO
HELLS GATE CHANNEL
(WEST)
0 300 600 \ :.
GRAPHIC SCALE IN FT 1 �
n
SHEET
5
OF 8

o
z
ao
CROSS SECTION A -A'
uWi
= _
0
B-B' oc
0
iR
W=
= J y
5
5
vv 8
W
W=
LL
-10
-10
ou
%
-15
-15
f
Z
R op
0
C
<
-20
-20
S�'w
w
■w
-25
-25
1000 2000 3000 4000 5000 6000
7000
DISTANCE ALONG SECTION (FEET)
0 5
10 0 500 1000
x
VERTICAL GRAPHIC
SCALE IN R HORIZONTAL GRAPHIC SCALE IN R
CROSS SECTION
B-B'
CROSS SECTION C-C'
5
5
5
5
v3 E3 E
0
0
0
0
o
w w
0
i L
-5
-5
-5
-5
ea
-10
-10
-10
-10
Z
Z
U
O
O
p}t
u
Jm
-15
-15
¢ -15
-15
° ozm
0
0
1
�o3 aQ--
F J
J
o zu,
-20
-20
-20
-20
z om O_
o z Q
o
W. ooG
i
-1000
-500 0
500 1000
-1000 -500
0 500
1000
0
eq(5
DISTANCE FROM CENTERLINE (FEET)
DISTANCE FROM CENTERLINE (FEET)
{
0 5 15 0
0 u50 500
0515 10
0 u50 500
ddb
VERTICAL
GRAPHIC SCALE IN IT
HORIZONTAL GRAPHIC SCALE IN IT
VERTICAL GRAPHIC SCALE IN IT
HORIZONTAL GRAPHIC SCALE IN IT
SHEET
6
NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
OF 8
EXISTING GRADE
I
DECEMBER 3, 2022
1
s
�\ t
rl 1n/
�{
\
MAXIMUM
AD EL.
EXISTING GRADE
DECEMBER 3, 2022
1L
J1
ry
y
41
lI
MAXIMUM AD EL.
_ -16.0' MLLW
4
0'
EXISTING GRADE
DECEMBER 3, 2022
1L
J1
MAXIMUM AD EL.
_ -16.0 'MLLW
0'
4

CROSS SECTION D-D'
z
E-e
F-F
w
5
5
2V
_Z
2Q
W 2
w 0
0
J o
50
LL
5
5
ou E
O
_
-10
10
-
LL
fo
>
ow
-15
-15
W
V e3w
-500
0 1000
2000 3000 4000
5000
6000 7000
8000 9000 9500
■
DISTANCE ALONG SECTION (FEET)
of tp
o�
o
VERTICAL GRAPHIC SCALE IN FT
HORIZONTAL GRAPHIC SCALE IN FT
o
CROSS SECTION
E-E'
CROSS SECTION
F-F'
5
5
5
5
------
w
0--
0
w 0
0
W
W
v3 E3 Fm
4
-5 -5 -5 -5
o
O
-10
-10
O -10
-10
^
>
-15
-15
> -15
-15
SLL
5
{ W
W
_ O
a
a °lw
9p§
1
u w a=
F
-500
-250 0
250 500
-500
-250
0 250
500
`o z zo
o<z z
DISTANCE FROM CENTERLINE (FEET)
DISTANCE FROM
CENTERLINE (FEET)
m.� o <o
O
o�G
ohs 10
o i o
ohs {o
o i�zs zso
g
m .0
(
VERTICAL
GRAPHIC SCALE IN FT
HORIZONTAL GRAPHIC SCALE IN FT
VERTICAL GRAPHIC SCALE IN FT
HORIZONTAL GRAPHIC SCALE
IN FT
i
SHEET
7
NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
OF 8
EXISTING GRADE
'
FEBRUARY 9,2023
'
1
II
1
s
h�
J
/ J V1
I
\
MAXIMUM
AD EL.
I
I
= -10.0'
MLLW
EXISTING GRADE
FIEBRUARY 9,2023
IL
J1
100
MAXIMUM AD EL.
_ -10.0' MLLW
EXISTING GRADE
9,2023
IL
/FEBRUARY
J1
MAXIMUM AD EL.
_ -10.0' MLLW

o
a o
W
W
_Z
CROSS SECTION G-G'
z
d
H H
W
5
5
= J y
50
F Q 8
w
0
0
W =
-5
5
_ _
o
0 m
fo op
O
-10
-10
Q
p F-
V e3
W
-15
-15
■w
-500 0 1000 2000 3000 3500
DISTANCE ALONG SECTION (FEET)
0 5 10 0 500 1000
x
VERTICAL
GRAPHIC SCALE IN R HORIZONTAL GRAPHIC SCALE IN R
a
CROSS SECTION H-H'
5
5
E
0
0
LL
e
5
5
Z
i
O
-10
-10
_ z
J
°z
1
>
003 z
?
w
-15
-15
�a
L uz w
uo
wzo
1
o o
-500
-250 0 250 500
0 0
g
o
{
DISTANCE FROM CENTERLINE (FEET)
!q5
{
0 5 15 10 0 2�50 500
ddb
VERTICAL
GMP�HIC SCALE IN IT HORIZONTAL GRAPHIC SCALE IN IT
SHEET
8
NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
OF 8
EXISTING GRADE
FEBRUARY 15, 2023
1L
J1
3
3
MAXIMUM AD EL.
_ -12.0' MLLW
EXISTING GRADE
FEBRUARY 15, 2023
1L
J1
MAXIMUM AD EL.
_ -12.0 'MLLW