O R E G O N
Lake UmatillaLight 57
Lake UmatillaLight 59
Irrigon Lower RangeRear Light
Irrigon Lower RangeFront Light 60
Lake UmatillaLight 62
Irrigon Upper RangeRear Light
Lake UmatillaLight 64
Irrigon Upper RangeFront Light
W A S H I N G T O NWASHINGTON
OREGON
WASHINGTONOREGON
FLOW
FLOW
IRRIGON
28
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334653
2730
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33 3232 31313131 31303031 303131303131313131 3131 31
8,450,000
8,450,000
8,455,000
8,455,000
8,460,000
8,460,000
8,465,000
8,465,000 8,470,000
8,470
,000
815,0
00
815,000
820,0
00
820,0
00
825,000
825,0
00
GEOG
RAPH
IC N
ORTH
GRID
NOR
TH
MAGNE
TIC N
ORTH
010
20
180 170 160 150140
130120
11010
0
9080
7060
5040
30
350340330320
310
300
290
280
270
260250
240230
220210
200190
0
180
150120
90
6030
330300
270
240210
Magnetic North:14° 43' E,
changing by ~0° 08' W each year
CORPS OF ENGINEERS U.S. ARMY
DD
DD D D D D D D D
D
D
D
D
D
DD D
DD D D
DD D D D D D
DD
D
O R E G O N
WA S H I N G T O N UV221
UV207
UV207
UV14
£¤395
£¤730
£¤730£¤395
£¤730
£¤730
§̈¦82
§̈¦82
§̈¦84§̈¦84
261 262263
264 265 266 267268
269270 271
272273
274275
276 277278 279
280281
282 283284 285
286287 288 289
290291 292
BOA R D M AN
IR R IG ONUM ATILLA
VICINITY MAP
LEGENDFederal Navigation ChannelFederal Navigation Channel CenterlinePipeline, Submarine On Land Line
; ; Cable, Overhead! ! ! ! ! ! ! Cable, Submarine
Pipeline, OverheadAnchorage AreaDredged Material Placement AreaCable AreaPipeline AreaShoaling Area
º Buoy, Lateral
{ Buoy, Cardinal
{ Buoy, Isolated Danger
½ Buoy, Safe Water
½ Buoy, Special Purpose
Beacon, General
Contour Lines
IT Benchmarkª Pylon Bridge Support
Rock
¾ Obstruction Point
çè Wreck-Submerged
cN NN
Staff Gage
cN NN( Recording Gage
!( Shoalest Sounding**
0 500 1,000 1,500 2,000 2,500SCALE IN FEET
IRRIGON MIDDLE RANGE18 May 2017
C O L U M B I A R I V E R
APPROVED:
CHIEF, WATERWAYS MAINTENANCE SECTION
CL_77_IMR_20170518_CS_POOLSURVEYED: PLOTTED: CHECKED:
COLUMBIA RIVER BETWEEN THE DALLES DAM AND MCNARY DAM
SUBMITTED:
RECOMMENDED:
CHIEF, SURVEY SECTION
Provides for a channel 14 feet deep and 250 feet wide from the Portterminal facilities at The Dalles to the John Day Dam.
THE EXISTING PROJECT
Image Copyright 2017 DigitalGlobe Inc. - Reference is Navigation Chart No. 18539.
NOTES:Horizontal Coordinate System: North American Datum of 1983 (NAD83), projected to the State Plane Coordinate System (SPCS), Oregon North Zone. Distance units in U.S. Survey Feet.
Vertical Datum: Soundings and elevations are shown in feet and are referred to a datum planewhich is 260.2 feet (Minimum Pool Elevation) above North American VerticalDatum of 1988 (NAVD 88).
River mileage conforms to the River Mile Index of the Hydrology and Hydraulics Committee, Pacific Northwest River Basins Commission, July 1972.The information depicted on this map represents the results of a survey conducted on the date indicated and can only be considered to represent the general channel conditions existing at that time and is in support of channel maintenance only.
** Shoalest Sounding per Quarter per Reach____________
0 3 6Miles³
CONDITION PREDREDGE POSTDREDGEX
## #
#
Pa c
i fi c
Oc e
an
O R E G O NO R E G O N
_̂
W A S H I N G T O NW A S H I N G T O N
PortlandMetro Area
SeattleMetro Area
Kelso
Vancouver
Tacoma
Salem
Corvallis
Kennewick WallaWalla
PascoRichland
Pendleton
Centralia
Olympia
SaintHelens
BONNEVILLEDAM
THE DALLESLOCK AND DAM
JOHN DAYDAM MCNARY
LOCK AND DAMC o lum b i a Ri v e r
