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Municipality of Bayham Norfolk County Port Glasgow Port Stanley Port Bruce Port Burwell WEST ELGIN SOUTHWOLD CENTRAL ELGIN MALAHIDE BAYHAM Lake Erie DUTTON/ DUNWICH 89 μ 100 Year Flood Level Flood Hazard Limit Toe of Bluff Stable Slope Allowance Erosion Hazard Limit Dynamic Beach Hazard Limit Cons. Auth. CGVD28 C.A. Tiles Reg. Reference Elevation Airphoto Lake Erie Water Level Datum Conversion Baird

Elgin County Lake Erie Shoreline Hazards County Lake... · h elan dw r i m t ofE sH z u Sb p Allowance plus the 100 year erosion rate measured landward from the toe of the shoreline

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Page 1: Elgin County Lake Erie Shoreline Hazards County Lake... · h elan dw r i m t ofE sH z u Sb p Allowance plus the 100 year erosion rate measured landward from the toe of the shoreline

Munic

ipality

of B

ayha

mNo

rfolk

Coun

ty204

204

204

204

204

204

NOR TH R OADW EST SIDELOT 1

CON 1LOT 27

LAK E R OADNOR TH SIDELOT 1

CON 1LOT 28

NOR TH R OADW EST SIDELOT 2

ELGIN COU NTY ROAD 55

SIDER D LOW ER

522,000

522,000

522,100

522,100

522,200

522,200

522,300

522,300

522,400

522,400

522,500

522,500

522,600

522,600

522,700

522,700

522,800

522,800

522,900

522,900

523,000

523,000

4,719,700

4,719,700

4,719,800

4,719,800

4,719,900

4,719,900

4,720,000

4,720,000

4,720,100

4,720,100

4,720,200

4,720,200

4,720,300

4,720,300

4,720,400

4,720,400

4,720,500

4,720,500

PortGlasgow

PortStanley Port

Bruce PortBurwell

Lower Tham esV alley C.A.

K ettle Creek C.A. Catfish Creek C.A. Long P ointR egion C.A.

WEST ELGIN

SOUTHWOLD CENTRAL ELGIN MALAHIDEBAYHAM

L a k e E r i e

DUTTON/DUNWICH

2

97

4

8

13

363738394041

42434445464748495051525354555657585960616263

6465666768 707172737475767778798081828384

8586878889

69

65

1110

1312

1416

18 20

26272930

19

24

31

21

333534

32

28252322

1715

Sheet Index

The hazard m apping data presented in this m ap series is an accom panim ent tothe report "Elgin County Shoreline Managem ent P lan, 2015". The hazardm apping has been developed in accordance with the Conservation AuthoritiesAct, Section 28, the individual regulations of the four Conservation Authorities(as docum ented in the table below), the P rovincial P olicy Statem ent (2014) andthe Technical Guide (Great Lakes-St. Lawrence R iver Sy stem ).

H azard Mapping100 Y ear Flood LevelFlood H azard Lim itToe of BluffStable Slope AllowanceErosion H azard Lim itDynam ic Beach H azard Lim it

Sheet of 8989

Elgin County Lake Erie Shoreline H azards

Legend

µ

County of ElginAdm inistration Building450 Sunset Dr,St. Thom as, N5R 5V 1www.elgincounty.ca

K ettle Creek C.A.44015 Ferguson Line,St. Thom as, N5P 3T3www.kettlecreekconservation.on.ca

Catfish Creek C.A.8079 Springwater R d,R R #5 Aylm er, N5H 2R 4www.catfishcreek.ca

Basem ap FeaturesTopographic Contour, 2 m etre Int.

Municipal Boundary

Conservation Authority Boundary

MNR Lot Fabric Improved

Long P oint R egion C.A. 4 Elm St, Tillsonburg, N4G 0C4www.lprca.on.ca

1 centim etre = 20 m etresScale 1:2,000

Every reasonable effort has been m ade to ensure theaccuracy of this m ap. H owever, neither Elgin County,LTV CA, K CCA, CCCA, LP R CA or Baird assum e anyliability arising from its use. This m ap is providedwithout warranty of any kind, either expressed orim plied.

The flooding, erosion and dy nam ic beach hazard lim its have been derived fromthe 1:2,000 scale digital terrain model and orthoim agery and do not consider theeffect of local irregularities and phy sical shoreline conditions that m ay affect sitespecific hazards. W here developm ent is proposed, the location of the hazardlim its should be reviewed with regard to the most recent and detailed siteinform ation available, with due consideration to the effect of adjacent shorelineconditions and associated hazards.100 Year Flood LevelThe 100 Y ear Flood Level is defined as the peak instantaneous stillwater level(i.e., m ean lake level plus storm surge) having a com bined probability of beingequalled or exceeded during any y ear of 1% (i.e., probability, P =0.01). The 100Flood Level elevation varies by Conservation Authority (SMP , 2015) as follows:

Flood Hazard LimitThe Flood H azard Lim it is defined as the 100 Y ear Flood Level plus a 15 m etreallowance for wave uprush. The Flood H azard Lim it can also be determ ined bya site specific technical study by the Conservation Authority.Toe of BluffThe Toe of Bluff (cliff, bluff or bank) was defined by interpretation of the 2010airphotos and topographic contours.Stable Slope AllowanceThe Stable Slope Allowance is defined as a horizontal allowance, m easuredlandward from the toe of the shoreline cliff, bluff, or bank, equivalent to 3.0 tim esthe height of the cliff, bluff, or bank.Erosion Hazard LimitThe landward lim it of the Erosion H azard is the sum of the Stable SlopeAllowance plus the 100 y ear erosion rate m easured landward from the toe ofthe shoreline cliff, bluff, or bank.Dynamic Beach Hazard LimitThe Dynam ic Beach H azard Lim it is defined as the sum of the Flood H azardLim it plus 30 m etres (m easured horizontally), or as determ ined by a site specifictechnical study by the Conservation Authority.

Map P rojection:H orizontal Datum :

Grid Spacing:U niversal Transverse Mercator, Zone 17North Am erican Datum 1983100 m etres

0 200 400 600 800Feet

0 50 100 150 200 250Metres

LTV CA 175.4 mK CCA 175.5 mCCCA 175.6 mLP R CA 175.7 m

Cons. Auth. CGVD28

C.A. Tiles Reg. ReferenceLTV CA 01 - 35 152/06 (O.R eg. 97/04)K CCA 36 - 59 181/06 (O.R eg. 97/04)CCCA 59 - 74 146/06 (O.R eg. 97/04)LP R CA 74 - 89 178/06 (O.R eg. 97/04)

ElevationTopographic contours are shown at 2 m etre intervals.Topographic elevation contours are derived from theDigital Terrain Model (DTM) built from the 2010SW OOP aerial elevation data, consisting of points andbreakline inform ation. DTM data was used to createsurfaces, and contours were produced from thesesurfaces. No sm oothing has been applied to thesecontours. V ertical Datum : Canadian Geodetic V erticalDatum of 1928 (CGV D28).AirphotoAirphoto base is April 2010, originally 20 centim etreresolution. The im agery was acquired by First BaseSolutions as part of the Governm ent of Ontario’sIm agery Acquisition Strategy, Southwestern OntarioOrthophotography P roject - 2010 (SW OOP 2010),licensed by Elgin County.INCLU DES MATER IAL © 2010 OF TH E Q U EEN'SP R INTER FOR ONTAR IO. ALL R IGH TS R ESER V ED.The Lake Erie monthly m ean water level for April 2010was 174.09 m etres (IGLD1985).Lake Erie Water LevelThe Lake Erie Chart Datum (Low W ater Datum ,IGLD1985) elevation is: 173.5 m etres.W ater Level inform ation is provided by CanadianH y drographic Service, Fisheries and Oceans Canada:http://www.waterlevels.gc.ca/

Datum ConversionIGLD1985 - CGV D28 = 0.03 m etres at P ort Stanley.

Street nam es are provided by Elgin County.

W .F. Baird & AssociatesCoastal Engineers, Ltd.Oakville & Ottawa, Ontario

www.baird.comBairdMap P ublication Date:October 2015

Mapping P repared by :

Lower Tham es V alley C.A.100 Tham es St,Chatham , N7L 2Y 8www.ltvca.ca