lafayette parish, louisiana - and incorporated areas

LAFAYETTE PARISH, LOUISIANA AND INCORPORATED AREAS

Community Name

Community Number

Broussard, City of 220102

Carencro, City of 220103

Duson, Town of 220104

Lafayette, City of 220105

Scott, City of 220106

Youngsville, City of 220358

Lafayette Parish

(Unincorporated Areas) 220101

Federal Emergency Management Agency FLOOD INSURANCE STUDY NUMBER

22055CV002A

Lafayette Parish

REVISED: DECEMBER 21, 2018

VOLUME 2 OF 2

NOTICE TO FLOOD INSURANCE STUDY USERS Communities participating in the National Flood Insurance Program (NFIP) have established repositories of flood hazard data for floodplain management and flood insurance purposes. This Flood Insurance Study (FIS) may not contain all data available within the repository. It is advisable to contact the community repository for any additional data. Part or all of this FIS may be revised at any time. In addition, part of this FIS may be revised by the Letter of Map Revision (LOMR) process, which does not involve republication or redistribution of the FIS report. It is, therefore, the responsibility of the users to consult with community officials and to check the community repository to obtain the most current FIS components. Initial Parish-wide FIS Date: January 19, 1996

First Revised Parish-wide FIS Date: January 20, 1999 - to update corporate limits, to change Base Flood Elevations, to add Base Flood elevations, and to change zone designations

Second Revised Parish-wide FIS Date: December 21, 2018 - to update corporate limits, to change Base Flood Elevations, to add Base Flood elevations, and to change zone designations

i

TABLE OF CONTENTS

Table of Contents – Volume 1

Page

1.0 INTRODUCTION 1

1.1 Purpose of Study 1

1.2 Authority and Acknowledgments 1

1.3 Coordination 4

2.0 AREA STUDIED 5

2.1 Scope of Study 5

2.2 Community Description 8

2.3 Principal Flood Problems 9

2.4 Flood Protection Measures 12

3.0 ENGINEERING METHODS 13

3.1 Hydrologic Analyses 13

3.2 Hydraulic Analyses 27

3.3 Vertical Datum 31

4.0 FLOODPLAIN MANAGEMENT APPLICATIONS 32

4.1 Floodplain Boundaries 32

4.2 Floodways 33

5.0 INSURANCE APPLICATIONS 64

6.0 FLOOD INSURANCE RATE MAP 64

7.0 OTHER STUDIES 65

8.0 LOCATION OF DATA 65

9.0 BIBLIOGRAPHY AND REFERENCES 67

ii

Table of Contents – Volume 1 – continued

FIGURES

FIGURE 1 – FLOODWAY SCHEMATIC 34

TABLES

TABLE 1 – INITIAL AND FINAL PRECOUNTYWIDE CCO MEETINGS DATES 4 TABLE 2 – FLOODING SOURCES STUDIED BY DETAILED METHODS 5 TABLE 3 – SCOPE OF REVISION 6 TABLE 4 – SUMMARY OF DISCHARGES 18 TABLE 5 – MANNING’S “n” VALUES 30 TABLE 6 – FLOODWAY DATA TABLES 35 TABLE 7 – COMMUNITY MAP HISTORY 66

EXHIBITS

Exhibit 1 - Flood Profiles

Acadiana Coulee (Vermilion Lateral 2) Panels 01P-02P Anselm Coulee Panels 03P-05P Bayou Carencro Panels 06P-08P Bayou Parc Perdue Panels 09P-11P Bayou Queue de Tortue Panels 12P-15P Beau Basin Coulee Panels 16P-18P Broadmoor Coulee Panel 19P Coulee Bend Panel 20P Coulee Des Poches / Grenovillieres Swamp Panels 21P-23P Coulee Fortune North (Cypress Bayou) Panels 24P-25P

iii

Table of Contents – Volume 2

EXHIBITS – continued

Coulee Fortune South Panels 26P-27P Coulee Ile Des Cannes Panels 28P-31P Coulee Ile Des Cannes - Lateral 1 Panels 32P-34P Coulee Ile Des Cannes - Lateral 2 Panels 35P-36P Coulee Ile Des Cannes - Lateral 3 (Lateral F) Panels 37P-39P Coulee Ile Des Cannes - Lateral F2 Coulee Ile Des Cannes - Lateral 4 Coulee Ile Des Cannes - Lateral 5 Coulee Lantier Coulee LaSalle Coulee Mine Coulee Mine Branch Coulee Mine - Lateral No.1 (East Channel) Coulee Mine - Lateral No.1 (West Channel) Cypress Bayou Ditch

Panel 40P Panels 41P-42AP Panel 43P Panels 44P-45P Panels 46P-47P Panels 48P-51P Panel 52P Panel 53P Panel 54P Panel 55P

Dan Dabaillion Coulee (Francois Coulee) Panels 56P-58P Darby Coulee Panels 59P-60P Duson Branch Panel 61P Edith Coulee Panels 62P-63P Gaston Coulee (North) Panel 64P Gaston Coulee (South) Panel 65P Grand Avenue Coulee Panels 66P-67P Grand Avenue Coulee Upper Reach Panel 68P Isaac Verot Coulee/Lateral 2 Panels 69P-71P Isaac Verot Coulee – Lateral 2A Panel 72P Isaac Verot Coulee – Lateral 3 Panel 73P Jupiter Street Coulee Panel 74P Manor Park Coulee Panels 75P-76P North Branch Panel 77P Old Coulee Mine Panel 78P Point Brule Coulee Panel 79P Saint John Coulee Panel 80P South Branch Panel 81P Vermilion River Panels 82P-89P Webb Coulee (Lower Reach) Panel 90P Webb Coulee (Upper Reach) Panel 91P West Coulee Mine Panels 92P-93P

Exhibit 2 - Flood Insurance Rate Map Index Flood Insurance Rate Map

-5

0

5 5

10 10

15 15

20 20

25 25

30 30

35 35

40 40

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000

ELEV

ATIO

N IN

FEE

T (N

AVD

88)

STREAM DISTANCE IN FEET FROM LAFAYETTE PARISH LINE

FEDE

RAL

EME R

GENC

Y M

A NAG

EMEN

T AG

ENC Y

LAFA

YETT

E PA

RISH

, LA

AND

INCO

R POR

ATED

AR E

AS

F LOO

D PR

O FIL

ES

COU L

EE F

O RTU

N E S

OUTH

26P

A B C D E F G H

I J

US 9

0

LA 9

2 YO

U NG

STRE

ET (E

AST)

LA 9

2 YO

U NG

STRE

ET (W

EST)

MAR

TEAU

ROA

D

COUN

T RY

RUN

DRIV

E

WES

T F A

IRFI

ELD

DRIV

E

LEGEND0.2% ANNUAL CHANCE FLOOD

1% ANNUAL CHANCE FLOOD



STREAM BED

CROSS SECTION LOCATION

PARI

S H B

OUN D

ARY

TOW

N OF

BRO

U SSA

RDLA

FAY E

TTE

P ARI

SH

TOW

N OF

BRO

U SSA

RDLA

FAY E

TTE

P ARI

SH

5

10

15 15

20 20

25 25

30 30

35 35

40 40

45 45

50 50

13000 14000 15000 16000 17000 18000 19000 20000 21000 22000 23000 24000 25000 26000

ELEV

ATIO

N IN

FEE

T (N

AVD

88)


FEDE

RAL

EME R

GENC

Y M

A NAG

EMEN

T AG

ENC Y

LAFA

YETT

E PA

RISH

, LA

AND

INCO

R POR

ATED

AR E

AS

F LOO

D PR

O FIL

ES

COU L

EE F

O RTU

N E S

OUTH

27P

K L M N O

N. L

ARRI

VIER

E RO

AD

HEAR

T D.

FAR

M R

OAD





STREAM BED


TOW

N OF

BRO

U SSA

RDLA

FAY E

TTE

P ARI

SH

TOW

N OF

BRO

U SSA

RDLA

FAY E

TTE

P ARI

SH

L IM

IT O

F DE

TAIL

E D S

TUD Y

-20

-15

-10 -10

-5 -5

5 5

10 10

15 15

20 20

25 25

0 2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 20,000 22,000 24,000 26,000

ELEV

ATIO

N IN

FEET

(NAV

D)

STREAM DISTANCE IN FEET ABOVE THE CONFLUENCE WITH VERMILION RIVER

FEDE

RAL E

MERG

ENCY

MAN

AGEM

ENT A

GENC

Y

LAFA

YETT

E PA

RISH

, LA

AND

INCO

RPO

RATE

D AR

EAS

FLOO

D PR

OFILE

SCO

ULEE

ILE

DES

CANN

ES

28P





STREAM BED

CROSS SECTION LOCATIONA B C D E F G H I J K L M

N

ROBL

EY D

RIVE

AMHU

RST R

OAD

U.S.

HIGH

WAY

167

LEBL

ANC

ROAD

BOUR

QUE R

OAD

ELLIA

S G R

OAD

CONF

LUEN

CE W

ITHVE

RMILI

ON R

IVER

CONF

LUEN

CE W

ITH

COUL

EE G

RANG

ES

BACKWATER EFFECTS FROM VERMILION RIVER

-10

-5

5 5

10 10

15 15

20 20

25 25

30 30

35 35

26,000 28,000 30,000 32,000 34,000 36,000 38,000 40,000 42,000 44,000 46,000 48,000 50,000 52,000

ELEV

ATIO

N IN

FEET

(NAV

D)


FEDE

RAL E

MERG

ENCY

MAN

AGEM

ENT A

GENC

Y

LAFA

YETT

E PA

RISH

, LA

AND

INCO

RPO

RATE

D AR

EAS

FLOO

D PR

OFILE

SCO

ULEE

ILE

DES

CANN

ES

29P





STREAM BED

CROSS SECTION LOCATIONO P Q R S T U V W X

Y

Z

AA

LA 34

2 (DU

HON

ROAD

)

LA 34

2EN

TRAN

CE R

OAD

PEDE

STRI

AN BR

IDGE

W. C

ONGR

ESS S

TREE

T

LE VI

OLON

ROA

D

ILE D

ES C

ANNE

S LAT

ERAL

2CO

NFLU

ENCE

WITH

COU

LEE

ILE D

ES C

ANNE

S LAT

ERAL

3CO

NFLU

ENCE

WITH

COU

LEE

CONF

LUEN

CE W

ITH C

OULE

EILE

DES

CAN

NES L

ATER

AL 4

-5

5 5

10 10

15 15

20 20

25 25

30 30

35 35

40 40

52,000 54,000 56,000 58,000 60,000 62,000 64,000 66,000 68,000 70,000 72,000 74,000 76,000 78,000

ELEV

ATIO

N IN

FEET

(NAV

D)


FEDE

RAL E

MERG

ENCY

MAN

AGEM

ENT A

GENC

Y

LAFA

YETT

E PA

RISH

, LA

AND

INCO

RPO

RATE

D AR

EAS

FLOO

D PR

OFILE

SCO

ULEE

ILE

DES

CANN

ES

30P





STREAM BED

CROSS SECTION LOCATIONAB AC AD AE AF AG AH AI

AJ AK

LE VI

OLON

ROA

D

DULL

ES D

RIVE

FENE

TRE R

OAD

OLD

SPAN

ISH TR

AIL

HW 90

RAILR

OAD

DELH

OMME

AVEN

UE

I - 10

RUE B

ON SE

COUR

S

10

15

20 20

25 25

30 30

35 35

40 40

45 45

50 50

55 55

78,000 80,000 82,000 84,000 86,000 88,000 90,000 92,000 94,000 96,000 98,000 100,000 102,000 104,000

ELEV

ATIO

N IN

FEET

(NAV

D)


FEDE

RAL E

MERG

ENCY

MAN

AGEM

ENT A

GENC

Y

LAFA

YETT

E PA

RISH

, LA

AND

INCO

RPO

RATE

D AR

EAS

FLOO

D PR

OFILE

SCO

ULEE

ILE

DES

CANN

ES

31P





STREAM BED

CROSS SECTION LOCATIONAL AM AN AO

RUD

DES B

ABIN

EAUX

LA 72

3 WYM

AN R

OAD

COCO

DRIL

ROAD

CULVERTCULVERT

LIMIT

OF ST

UDY

-10

-5

5 5

10 10

15 15

20 20

25 25

30 30

35 35

0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11,000 12,000 13,000

ELEV

ATIO

N IN

FEET

(NAV

D)

STREAM DISTANCE IN FEET ABOVE THE CONFLUENCE WITH COULEE ILE DES CANNES

FEDE

RAL E

MERG

ENCY

MAN

AGEM

ENT A

GENC

Y

LAFA

YETT

E PA

RISH

, LA

AND

INCO

RPO

RATE

D AR

EAS

FLOO

D PR

OFILE

SCO

ULEE

GRA

NGES

/CO

ULEE

ILE

DES

CANN

ES L

ATER

AL 1

32P





STREAM BED

CROSS SECTION LOCATIONA B C D E F

G H

PETIT

E ROA

D

LEBL

ANC

ROAD

DENA

IS RO

AD

COULEE GRANGES COULEE ILE DES CANNES LATERAL 1

CONF

LUEN

CE W

ITHCO

ULEE

ILE D

ES C

ANNE

S

10

15

20 20

25 25

30 30

35 35

40 40

45 45

50 50

55 55

13,000 14,000 15,000 16,000 17,000 18,000 19,000 20,000 21,000 22,000 23,000 24,000 25,000 26,000

ELEV

ATIO

N IN

FEET

(NAV

D)


FEDE

RAL E

MERG

ENCY

MAN

AGEM

ENT A

GENC

Y

LAFA

YETT

E PA

RISH

, LA

AND

INCO

RPO

RATE

D AR

EAS

FLOO

D PR

OFILE

SCO

ULEE

GRA

NGES

/CO

ULEE

ILE

DES

CANN

ES L

ATER

AL 1

33P



2% ANNUAL CHANCE FLOOD10% ANNUAL CHANCE FLOOD

STREAM BED

CROSS SECTION LOCATIONI J K L

SELL

ERS R

OAD

COULEE ILE DES CANNES LATERAL 1

10

15

20 20

25 25

30 30

35 35

40 40

45 45

50 50

55 55

23,000 24,000 25,000 26,000 27,000 28,000 29,000 30,000 31,000 32,000 33,000 34,000 35,000 36,000

ELEV

ATIO

N IN

FEET

(NAV

D)


FEDE

RAL E

MERG

ENCY

MAN

AGEM

ENT A

GENC

Y

LAFA

YETT

E PA

RISH

, LA

AND

INCO

RPO

RATE

D AR

EAS

FLOO

D PR

OFILE

SCO

ULEE

GRA

NGES

/CO

ULEE

ILE

DES

CANN

ES L

ATER

AL 1

34P


1% ANNUAL CHANCE FLOOD*



STREAM BED

CROSS SECTION LOCATIONM N O P

Q

S. FIE

LDSP

AN R

OAD

LIMIT

OF ST

UDY

COULEE ILE DES CANNES LATERAL 1

5

10 10

15 15

20 20

25 25

30 30

0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11,000 12,000 13,000

ELEV

ATIO

N IN

FEET

(NAV

D)


FEDE

RAL E

MERG

ENCY

MAN

AGEM

ENT A

GENC

Y

LAFA

YETT

E PA

RISH

, LA

AND

INCO

RPO

RATE

D AR

EAS

FLOO

D PR

OFILE

SCO

ULEE

ILE

DES

CANN

ES L

ATER

AL 2

35P



2% ANNUAL CHANCE FLOOD10% ANNUAL CHANCE FLOOD

STREAM BED

CROSS SECTION LOCATIONA B C D E F G H

I J

BROU

SSAR

D RO

AD

WTP

ENTR

ANCE

ROA

D

RIDG

E ROA

D

CONF

LUEN

CE W

ITH C

OULE

EILE

DES

CAN

NES

CULVERT

5

10 10

15 15

20 20

25 25

30 30

12,000 13,000 14,000 15,000 16,000

ELEV

ATIO

N IN

FEET

(NAV

D)


FEDE

RAL E

MERG

ENCY

MAN

AGEM

ENT A

GENC

Y

LAFA

YETT

E PA

RISH

, LA

AND

INCO

RPO

RATE

D AR

EAS

FLOO

D PR

OFILE

SCO

ULEE

ILE

DES

CANN

ES L

ATER

AL 2

36P





STREAM BED

CROSS SECTION LOCATIONK

L

M N O

LIMIT

OF ST

UDY

5

10 10

15 15

20 20

25 25

30 30

35 35

40 40

45 45

0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11,000 12,000 13,000

ELEV

ATIO

N IN

FEET

(NAV

D)


FEDE

RAL E

MERG

ENCY

MAN

AGEM

ENT A

GENC

Y

LAFA

YETT

E PA

RISH

, LA

AND

INCO

RPO

RATE

D AR

EAS

FLOO

D PR

OFILE

S

37P





STREAM BED

CROSS SECTION LOCATIONA B

C

D

E

F G

H I

W. C

ONGR

ESS S

TREE

T

LA 93

RUE

DE B

ELIER

CONF

LUEN

CE W

ITH C

OULE

EILE

DESC

ANNE

S

CULVERT

COUL

EE IL

E DE

S CA

NNES

LAT

ERAL

3 (L

ATER

AL F

)

5

10

15 15

20 20

25 25

30 30

35 35

40 40

45 45

50 50

13,000 14,000 15,000 16,000 17,000 18,000 19,000 20,000 21,000 22,000 23,000 24,000 25,000 26,000

ELEV

ATIO

N IN

FEET

(NAV

D)


FEDE

RAL E

MERG

ENCY

MAN

AGEM

ENT A

GENC

Y

LAFA

YETT

E PA

RISH

, LA

AND

INCO

RPO

RATE

D AR

EAS

FLOO

D PR

OFILE

SCO

ULEE

ILE

DES

CANN

ES L

ATER

AL 3

(LAT

ERAL

F)

38P





STREAM BED

CROSS SECTION LOCATIONJ K L M

N O

DULL

ES D

RIVE

OLE C

OLON

Y ROA

D

DES J

AQUE

S ROA

D

SYLV

IA ST

REET

U.S.

90

RAILR

OAD

DELH

OMME

AVEN

UE

CULVERTCULVERT CULVERT

10

15

20 20

25 25

30 30

35 35

40 40

45 45

50 50

55 55

25,000 26,000 27,000 28,000 29,000 30,000 31,000 32,000 33,000 34,000 35,000 36,000 37,000 38,000

ELEV

ATIO

N IN

FEET

(NAV

D)


FEDE

RAL E

MERG

ENCY

MAN

AGEM

ENT A

GENC

Y

LAFA

YETT

E PA

RISH

, LA

AND

INCO

RPO

RATE

D AR

EAS

FLOO

D PR

OFILE

S

39P





STREAM BED

CROSS SECTION LOCATIONP Q R S T U V

W W

ILLOW

STRE

ET

W. W

ILLOW

STRE

ET

MILL

S STR

EET

LIMIT

OF ST

UDY

CULVERT CULVERT

CULVERT

CULVERT

I - 10

COUL

EE IL

E DE

S CA

NNES

LAT

ERAL

3 (L

ATER

AL F

)

5

10

15 15

20 20

25 25

30 30

35 35

40 40

45 45

50 50

0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11,000 12,000 13,000

ELEV

ATIO

N IN

FEET

(NAV

D)


FEDE

RAL E

MERG

ENCY

MAN

AGEM

ENT A

GENC

Y

LAFA

YETT

E PA

RISH

, LA

AND

INCO

RPO

RATE

D AR

EAS

FLOO

D PR

OFILE

SCO

ULEE

ILE

DES

CANN

ES L

ATER

AL 4

41P





STREAM BED

CROSS SECTION LOCATIONA B C D E F G H I

J K

LAND

RY R

OAD

FACI

LE R

OAD

JENK

INS R

OAD

CULVERT

CULVERT

CONF

LUEN

CE W

ITH C

OULE

EILE

DES

CAN

NES

15

20

25 25

30 30

35 35

40 40

45 45

50 50

55 55

60 60

13,000 14,000 15,000 16,000 17,000 18,000 19,000 20,000 21,000 22,000 23,000 24,000 25,000 26,000

ELEV

ATIO

N IN

FEET

(NAV

D)


FEDE

RAL E

MERG

ENCY

MAN

AGEM

ENT A

GENC

Y

LAFA

YETT

E PA

RISH

, LA

AND

INCO

RPO

RATE

D AR

EAS

FLOO

D PR

OFILE

SCO

ULEE

ILE

DES

CANN

ES L

ATER

AL 4

42P





STREAM BED

CROSS SECTION LOCATIONL M

DENM

ARK R

OAD

U.S.

HIGH

WAY

90RA

ILROA

D

DARC

ENEA

UX R

OAD

THE 2 PCT YEAR AND 0.2 PCT YEAR FLOOD PROFILES ARE TOO CLOSETO THE 100 YEAR ELEVATION TO BE SHOWN SEPERATELY

CULVERTCULVERT

CULVERT

20

25

30 30

35 35

40 40

45 45

50 50

55 55

60 60

65 65

21,000 22,000 23,000 24,000 25,000 26,000 27,000 28,000 29,000 30,000 31,000 32,000 33,000 34,000

ELEV

ATIO

N IN

FEET

(NAV

D)


FEDE

RAL E

MERG

ENCY

MAN

AGEM

ENT A

GENC

Y

LAFA

YETT

E PA

RISH

, LA

AND

INCO

RPO

RATE

D AR

EAS

FLOO

D PR

OFILE

SCO

ULEE

ILE

DES

CANN

ES L

ATER

AL 4

42AP





STREAM BED

CROSS SECTION LOCATIONN

O

CULVERT

LIMIT

OF ST

UDY

I-10

-5

0

5 5

10 10

15 15

20 20

25 25

30 30

35 35

40 40

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000

ELEV

ATIO

NIN

FEET

(NAV

D88

)

STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH VERMILION RIVER

FEDE

RAL

EME R

GENC

YM

ANAG

EMEN

TAG

ENCY

LAFA

YETT

EPA

RISH

,LA

AND

INCO

R POR

ATED

AREA

S

FLOO

DPR

OFIL

ES

COUL

EELA

NTIE

R

44P

A B C DLA

1252





STREAM BED


CONF

LUEN

CEW

ITH

VERM

ILIO

NRI

VER


E F

ARN A

UDVI

LLE

ROAD

MAG

ELLA

NRO

AD

0

5

10 10

15 15

20 20

25 25

30 30

35 35

40 40

45 45

10000 11000 12000 13000 14000 15000 16000 17000 18000 19000 20000 21000 22000 23000

ELEV

ATIO

NIN

FEET

(NAV

D88

)

STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH VERMILION RIVER

FEDE

RAL

EME R

GENC

YM

ANAG

EMEN

TAG

ENCY

LAFA

YETT

EPA

RISH

,LA

AND

INCO

R POR

ATED

AREA

S

FLOO

DPR

OFIL

ES

COUL

EELA

NTIE

R

45P





STREAM BED


LIM

ITOF

DETA

ILED

STUD

Y

0

5

10 10

15 15

20 20

25 25

30 30

35 35

40 40

45 45

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000

ELEV

ATIO

N IN

FEE

T (N

AVD

88)


FEDE

RAL

EME R

GENC

Y M

A NAG

EMEN

T AG

ENC Y

LAFA

YETT

E PA

RISH

, LA

AND

INCO

R POR

ATED

AR E

AS

F LOO

D PR

O FIL

ES

COUL

EE L

ASAL

LE

46P

A B C D E

F

LE T

RIOM

PHE

PARK

WAY

MAR

TEAU

ROA

D

S LA

R RIV

IERE

ROA

D

YOUN

G ST

REET

(LA

92)





STREAM BED


PARI

S H B

OUN D

ARY

LAFA

Y ETT

E P A

RISH

CITY

OF

YOUN

G SVI

LLE

LAFA

Y ETT

E P A

RISH

LAFA

Y ETT

E P A

RISH

CITY

OF

YOUN

G SVI

LLE

CITY

OF

YOUN

G SVI

LLE

LAFA

Y ETT

E P A

RISH

LAFA

Y ETT

E P A

RISH

CITY

OF

YOUN

G SVI

LLE

CITY

OF

YOUN

G SVI

LLE

5

10

15 15

20 20

25 25

30 30

35 35

40 40

45 45

50 50

13000 14000 15000 16000 17000 18000 19000 20000 21000 22000 23000 24000 25000 26000

ELEV

ATIO

NIN

FEET

(NAV

D88

)


FEDE

RAL

EME R

GENC

YM

ANAG

EMEN

TAG

ENCY

LAFA

YETT

EPA

RISH

,LA

AND

INCO

R POR

ATED

AREA

S

FLOO

DPR

OFIL

ES

COUL

EELA

SALL

E

47P

G H I J

GRIF

FEN

ROAD

CANE

BRAK

ERO

AD





STREAM BED


CITY

OFY O

UNGS

VILL

ELA

FAYE

TTE

P ARI

SH

TOW

NOF

BROU

SSA R

DLA

FAYE

TTE

PAR I

SH

TOW

NOF

BRO U

SSAR

DCI

TYOF

YOUN

GSV I

LLE

LIM

ITOF

DET A

ILED

STUD

Y

-10

-5

0 0

5 5

10 10

15 15

20 20

25 25

30 30

35 35

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000

ELEV

ATIO

N IN

FEE

T (N

AVD

88)

STREAM DISTANCE IN FEET ABOVE MOUTH

FEDE

RAL

EME R

GENC

Y M

A NAG

EMEN

T AG

ENC Y

LAFA

YETT

E PA

RISH

, LA

AND

INCO

R POR

ATED

AR E

AS

FLOO

D PR

O FIL

ES

DARB

Y CO

ULEE

59P

A B

C D

GALL

ET R

O AD





STREAM BED


CONF

LUEN

CE W

ITH

VERM

ILIO

N R I

VER

VERMILION RIVERBACKWATER EFFECTS FROM

-5

0

5 5

10 10

15 15

20 20

25 25

30 30

35 35

40 40

13000 14000 15000 16000 17000 18000 19000 20000 21000 22000 23000 24000 25000 26000

ELEV

ATIO

N IN

FEE

T (N

AVD

88)


FEDE

RAL

EME R

GENC

Y M

A NAG

EMEN

T AG

ENC Y

LAFA

YETT

E PA

RISH

, LA

AND

INCO

R POR

ATED

AR E

AS

FLOO

D PR

O FIL

ES

DARB

Y CO

ULEE

60P

E F G

SWIT

Z ERL

AND

ROAD

LA 3

39 (V

EROT

SCH

OOL

ROAD

)





STREAM BED


LIM

IT O

F DE

TAIL

E D S

TUD Y

-10

-5

0 0

5 5

10 10

15 15

20 20

25 25

30 30

35 35

0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500

ELEV

ATIO

N IN

FEE

T (N

AVD

88)


FEDE

RAL

EME R

GENC

Y M

A NAG

EMEN

T AG

ENC Y

LAFA

YETT

E PA

RISH

, LA

AND

INCO

R POR

ATED

AR E

AS

FLOO

D PR

O FIL

ES

EDIT

H CO

U LEE

62P

A B C D

E

ESPA

SSIE

LAN

E

ARG U

S ST

R EET

LA 9

2 (P

ICAR

D RO

AD)

E. E

DITH

RO A

D





STREAM BED


ZOTH

IQUE

ROA

D

VERM

ILIO

N R I

VER

CONF

LUEN

CE W

ITH


0

5

10 10

15 15

20 20

25 25

30 30

35 35

40 40

45 45

6500 7000 7500 8000 8500 9000 9500 10000 10500 11000 11500 12000 12500 13000

ELEV

ATIO

N IN

FEE

T (N

AVD

88)


FEDE

RAL

EME R

GENC

Y M

A NAG

EMEN

T AG

ENC Y

LAFA

YETT

E PA

RISH

, LA

AND

INCO

R POR

ATED

AR E

AS

FLOO

D PR

O FIL

ES

EDIT

H CO

U LEE

63P

F

LA 7

33 (E

. BRO

USS A

RD R

OAD)





STREAM BED


LIM

IT O

F DE

TAIL

E D S

TUD Y

-5

0

5 5

10 10

15 15

20 20

25 25

30 30

35 35

40 40

0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500

ELEV

ATIO

N IN

FEE

T (N

AVD

88)


FEDE

RAL

EME R

GENC

Y M

A NAG

EMEN

T AG

ENC Y

LAFA

YETT

E PA

RISH

, LA

AND

INCO

R POR

ATED

AR E

AS

FLOO

D PR

O FIL

ES

GRAN

D A V

ENUE

COU

L EE

66P

A B C

D

OAK

GLEN

DRI

VE

HAR W

ELL

DRIV

E

JOHN

STON

ST R

EET





STREAM BED


CONF

LUEN

CE W

ITH

VERM

ILIO

N R I

VER


10

15

20 20

25 25

30 30

35 35

40 40

45 45

50 50

55 55

6500 7000 7500 8000 8500 9000 9500 10000 10500 11000 11500 12000 12500 13000

ELEV

ATIO

N IN

FEE

T (N

AVD

88)


FEDE

RAL

EME R

GENC

Y M

A NAG

EMEN

T AG

ENC Y

LAFA

YETT

E PA

RISH

, LA

AND

INCO

R POR

ATED

AR E

AS

FLOO

D PR

O FIL

ES

GRAN

D A V

ENUE

COU

L EE

67P

E F G H I J

MAP

LE D

R IVE

IDLE

WO O

D BO

U LEV

ARD

GUIL

BEAU

DRI

VE

CHUR

CHIL

L D R

IVE

CRAW

FORD

ST R

EET





STREAM BED


CONF

LUEN

CE O

F GR

A ND

AVE N

UE C

OULE

E UP

PER

REAC

H

L IM

IT O

F DE

TAIL

E D S

TUD Y

10

15

20 20

25 25

30 30

35 35

40 40

45 45

50 50

55 55

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000

ELEV

ATIO

N IN

FEE

T (N

AVD

88)


FEDE

RAL

EME R

GENC

Y M

A NAG

EMEN

T AG

ENC Y

LAFA

YETT

E PA

RISH

, LA

AND

INCO

R POR

ATED

AR E

AS

FLOO

D PR

O FIL

ES

JUP I

TER

S TRE

E T C

OULE

E

74P

A B C D E F G H

LA 9

4-C A

RAM

E L D

RIVE

EAST

PIN

HOOK

ROA

D

WE B

B ST

REET

CEN T

ER S

TREE

T

JOY

STRE

ET

AMIL

CAR

BOUL

EVAR

D

SOUT

HERN

PAC

IFIC

RAI

LRO A

D





STREAM BED


CITY

OF

LAFA

Y ETT

ELA

FAY E

TTE

P ARI

SH

CITY

OF

LAFA

Y ETT

ELA

FAY E

TTE

P ARI

SH

CITY

OF

LAFA

Y ETT

ELA

FAY E

TTE

P ARI

SH

CITY

OF

LAFA

Y ETT

ELA

FAY E

TTE

P ARI

SH

L IM

IT O

F DE

TAIL

E D S

TUD Y

-10

-5

0 0

5 5

10 10

15 15

20 20

25 25

30 30

35 35

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000

ELEV

ATIO

N IN

FEE

T (N

AVD

88)


FEDE

RAL

EME R

GENC

Y M

A NAG

EMEN

T AG

ENC Y

LAFA

YETT

E PA

RISH

, LA

AND

INCO

R POR

ATED

AR E

AS

F LOO

D PR

O FIL

ES

MAN

OR P

ARK

COUL

EE

75P

A B C D

MAR

YVI E

W F

ARM

ROA

D

BUTC

HER

SWIT

C H R

OAD

E . G

LORI

A SW

ITC H

ROA

D

IRBY

ROA

D

AGN E

S CO

RMIE

R





STREAM BED


CONF

LUEN

CE W

ITH

VERM

ILIO

N R I

VER


CITY

OF

LAFA

Y ETT

ELA

FAY E

TTE

PARI

SH

CITY

OF

LAFA

Y ETT

ELA

FAY E

TTE

PARI

SH

CITY

OF

LAFA

Y ETT

ELA

FAY E

TTE

PARI

SH

E F G

PARK

LANE

ROA

D

-5

0

5 5

10 10

15 15

20 20

25 25

30 30

35 35

40 40

10000 11000 12000 13000 14000 15000 16000 17000 18000 19000 20000 21000 22000 23000

ELEV

ATIO

N IN

FEE

T (N

AVD

88)


FEDE

RAL

EME R

GENC

Y M

A NAG

EMEN

T AG

ENC Y

LAFA

YETT

E PA

RISH

, LA

AND

INCO

R POR

ATED

AR E

AS

FLOO

D PR

O FIL

ES

MAN

OR P

ARK

COUL

EE

76P

H





STREAM BED


BACKWATER EFFECTSFROM VERMILION RIVER

LIM

I T O

F DE

TAIL

ED S

TUDY

-5

0

5 5

10 10

15 15

20 20

25 25

30 30

35 35

40 40

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000

ELEV

ATIO

N IN

FEE

T (N

AVD

88)

STREAM DISTANCE IN FEET FROM PARISH LINE

FEDE

RAL

EME R

GENC

Y M

A NAG

EMEN

T AG

ENC Y

LAFA

YETT

E PA

RISH

, LA

AND

INCO

RPOR

A TED

AR E

A

F LOO

D PR

O FIL

ES

POIN

T B R

ULE

COUL

E E

79P

A B C D E F

STAT

E HI

GHW

AY 7

2 6 (L

A 12

52)





STREAM BED


PARI

S H B

OUN D

ARY

PARI

S H B

OUN D

ARY


-10

-5

0 0

5 5

10 10

15 15

20 20

25 25

30 30

35 35

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000

ELEV

ATIO

N IN

FEE

T (N

AVD

88)


FEDE

RAL

EME R

GENC

Y M

A NAG

EMEN

T AG

ENC Y

LAFA

YETT

E PA

RISH

, LA

AND

INCO

R POR

ATED

AR E

AS

FLOO

D PR

O FIL

ES

WEB

B CO

ULEE

(LO W

ER R

EACH

)

90P

A B C D

E

LA94

-CAR

AMEL

DRI

VE





STREAM BED



CONF

L UEN

CE W

ITH

VERM

ILIO

N R I

VER

L IM

IT O

F DE

TAIL

E D S

TUD Y

LAFA

Y ETT

E P A

RISH

CITY

OF

LAFA

Y ETT

E

WES

T CO

ULEE

MIN

E(C

OULE

E M

INE

LATE

RAL

1)

lafayette parish, louisiana - and incorporated areas

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