OF5-M

OF5-N

OF5-O

OF5-P

OF5-Q

OF5-R

OF5-S

OF5-T

OF5-U

OF5-V

OF5-W

OF5-X

OF5-Y

OF5-Z

OF5-AA

OF5-AB

OF6-AOF6-B

OF6-C

OF6-D

OF6-E

OF6-F

OF6-G

OF6-H

OF6-I

OF6-J

OF6-N

Snoqualmie River

RM

28.5

RM

29.

0

RM

29.

5

RM 30.0

RM 30.5

RM

31.

0

RM 31.5

RM 32.0

RM 32.5

RM 33.0

RM

33.5

SR 2

03

SR 2

03

Stick

ney S

lough

W S

NO

QU

ALM

IE R

IVER

RD

SE

19TH WAY

Janick

e Slou

gh

SE 24TH ST

SE 28TH ST

316T

H A

V SE

SR 202

324T

H A

V SE

NEAL RD SE

SR 2

03

Rutherford Slough

SE 3

9TH

PL

NEAL RD SE

SR 2

03Sno-EL

Sno-EKSno-EJ

Sno-EH

Sno-EG

Sno-EF

Sno-EE

Sno-ED

Sno-EC

Sno-EASno-DZ

Sno-DY

Sno-DX

Sno-DW

Sno-DV

ZONE AE

ZONE AE

ZONE AE

82

84

85

86

87

88

89

90

91

92

93

94

98

9796

95

94

93

92

91

90

89

88

LIM

IT O

F D

ETA

ILED

STU

DY

81

82

84

85

86

87

Floodway delineated in this area is based on amaximum 1 ft rise in the main channel.Overflow reach surcharges were not evaluatedindependently. Further discussion of this issuemay be warranted.

Floodway delineated in this area is based on amaximum 1 ft rise in the main channel.Overflow reach surcharges were not evaluatedindependently. Further discussion of this issuemay be warranted.

TRANSITION TO PATTERSON CREEKFLOODWAY AND FLOODPLAIN MAPPING.

Plate 15 of 17

MATCH TO PLATE 16

Sheet Index

12 3

56

9810 111214

13

16 17

Date: 1/24/2006

DRAFTnorthwest hydraulic consultants inc.16300 Christensen Road, Suite 350

Seattle, WA 98188206-241-6000

This map has been photogrammetrically compiled from 1"=750' scale, 152.852mm C.F.L. aerial photos to meet National Standard for Spatial Data Accuracy(NSSDA) at a map scale of 1"=200' or 1:2400. Publication or use at any largerscale will void any implied or stipulated accuracy standards. This map has notbeen verified by field checks. Note: Field verification of map accuracy shouldoccur prior to design level tasks that are dependent upon this map. Areas withindense vegetation are indicted by dashed contour lines, accuracy within theseareas may vary in accordance with NSSDA standards.

Topography created by 3DI West of Eugene, OregonTopography based upon March 2004 Aerial Photographs (BergmanPhotogrametric Services), Ground and Bathymetric Surveys (Minister-GlaeserSurveying), AGPS control (Orion GPS), and LIDAR data (Puget Sound LIDARConsortium, King County Dept of Transportation, Snohomish County Dept. ofPublic Works).

Contour interval: 2 ft (contours generated from photogrammetry in King Co. andLIDAR and photogrammetry in Snohomish County)

Vertical Datum: NAVD 88, Horizontal Datum: HPGN (NAD 1983/1991)Coordinate System: State Plane Washington North - feetDatum Conversion Equation: NGVD29 = NAVD88 - 3.49'

Prepared for King County Department of NaturalResources and Parks, and Snohomish County

Department of Public Works

Lower Snoqualmie & Skykomish Rivers Work MapKing & Snohomish Counties, Washington

Legend

Minor Contours - 2 foot

Spot Elevations

Corporate Boundary

River Mile Marker and Number

Ground Not Visible

Railroad

PLSS Grid

Elevation Reference Mark and Number

Vegetation Lines

Major Contours - 10 foot

RM 3.5

Edge of Water

Structures

Matchlines

100-year Floodplain Boundary

500-year Floodplain Boundary

Floodway Boundary

Base Flood Elevation

Cross-Section (color varies by river reach)Sno-A

MATCH TO PLATE 13

DescriptionElevationName

Elevation Reference Mark Information

CP-WSDOT-0613BM22 100.34

MA

TCH

TO P

LATE 14