NOTICE TO FLOOD INSURANCE STUDY USERS

Transcription

1 VOLUM ME 2 OF 4 WAYN NE CO OUNTY Y, MICH HIGAN (ALL JUR RISDICTIONS) Community C Community Community Name N Number Community Na C ame N Number Allen Park k, City of * Grosse Poin nte Woods, Belleville, City of City of Brownsto wn, Charter * Hamtramck, City of ods, City of Townshiip of * Harper Woo Canton, Township T of * Highland Paark, City of Dearborn,, City of Huron, Tow wnship of Waayne Dearborn Heights, Inkster, City y of Coounty City of Lincoln Park k, City of Livonia, City y of Detroit, Ciity of Ecorse, Ciity of Melvindale,, City of Flat Rock,, City of Northville, City C of * Garden Ciity, City of (Oakland and a Wayne Gibraltar, City C of Counties) Northville, Township Grosse Ilee, Township off T of Grosse Po ointe, City of Plymouth, Charter C Grosse Po ointe Farms, Township of Comm munity City of C of Plymouth, City Com mmunity Name Num mber Grosse Po ointe Park, Redford, To ownship of T Taylor, City off T Trenton, City of o City of River Rougee, City of Grosse Po ointe Shores, Riverview, City C of V Buren, Tow Van wnship of W Wayne, City off A Michig gan City, Rockwood, City of W Westland, City y of Romulus, Ciity of Village o f W Woodhaven, C of City b and Wayne Southgate, City C of (Macomb W Wyandotte, Ciity of Countiess) Sumpter, To ownship of * No Special Flood Hazard Arreas identified EFFECTIVE: F February 2, Federal F E Emergen ncy Mannagemennt Agenccy FLOOD INSU URANCE STU UDY NUMBER R 26163CV002A A

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) report may not contain all data available within the Community Map Repository. It is advisable to contact the Community Map Repository for any additional data. Part or all of this Flood Insurance Study may be revised and republished at any time. In addition, part of this Flood Insurance Study may be revised by the Letter of Map Revision process, which does not involve republication or redistribution of the Flood Insurance Study. It is, therefore, the responsibility of the user to consult with community officials and to check the community repository to obtain the most current Flood Insurance Study components. Selected Flood Insurance Rate Map panels for this community contain information that was previously shown separately on the corresponding Flood Boundary and Floodway Map panels (e.g., floodways, cross sections). In addition, former flood hazard zone designations have been changed as follows: Old Zones A1 through A30 B C New Zone AE X X Initial Countywide FIS Effective Date: February 2, 2012

3 TABLES OF CONTENTS Table of Contents Volume INTRODUCTION 1 Page 1.1 Purpose of Study Authority and Acknowledgements Coordination STUDIED Scope of Study Community Description Principal Flood Problems Flood Protection Measures ENGINEERING METHODS Hydrologic Analyses Hydraulic Analyses Vertical Datum FLOODPLAIN MANAGEMENT APPLICATIONS Floodplain Boundaries Floodways 61 Table of Contents Volume INSURANCE APPLICATIONS FLOOD INSURANCE RATE MAP OTHER STUDIES LOCATION OF DATA BIBLIOGRAPHY AND REFERENCES 159 i

4 FIGURES Figures Volume 1 FIGURE 1 Floodway Schematic 62 Page TABLES Tables Volume 1 TABLE 1 Wayne County CCO Meetings 8 9 TABLE 2 Limits of Previous Detailed Studies TABLE 3 Limits of Restudied Detailed Studies 12 TABLE 4 Limits of New Detailed Studies TABLE 5 Streams Studied by Approximate Methods 14 TABLE 6 Stream Name Changes 14 TABLE 7 Letters of Map Changes 15 TABLE 8 High-Water Marks 18 TABLE 9 Summary of Peak Discharges TABLE 10 Detroit River Flood Elevations 38 TABLE 11 Summary of Stillwater Elevations 39 TABLE 12 Cross Section Data TABLE 13 Starting Water-Surface Elevations TABLE 14 Manning s n Values TABLE 15 Datum Conversion Calculation 60 Floodway Data Tables - Volume 2 Floodway Data TABLE 17 Community Map History EXHIBITS Exhibits Volume 3 Exhibit 1 Flood Profiles Ashcroft-Sherwood Drain Bakewell Tile Extension Beitz Drain Bell Branch Bingell Drain Bird Marsh Drain Bradshaw Drain Branch No. 1 Mosquito Drain Brighton Drain Brooks Drain 01P 02P 03P 04P 05P 14P 15P 16P 17P 18P 19P 20P 21P 22P ii

5 EXHIBITS (continued) Exhibits Volume 3 (continued) Exhibit 1 Flood Profiles Brownstown Creek Carroll Drain Clark-Morey Drain Clee Drain East Clee Drain West Cook and Gladding Drain Day and Cutter Drain Desbrow Drain Detroit River Division A Division B Ecorse Creek Fellows Creek Frank and Poet Drain Frenchman Creek Green Meadows Drain Hand Drain Head Drain Huntington Creek Huron River Jefferson Avenue Diversion Johnson Drain Johnson Drain Tributary King Drain Lamke Drain Lords Drain Lower River Rouge Marsh Creek Marsh Creek / Blakely Drain Blakely Drain McClaughrey Drain Page 23P 31P 32P 33P 34P 35P 36P 37P 38P 39P 40P 42P 43P 47P 48P 49P 50P 51P 52P 53P 62P 63P 64P 65P 66P 67P 68P 71P 72P 73P 74P 76P 77P 78P 79P 80P 81P 82P 88P 89P 91P 92P 93P 98P 99P 100P Exhibits Volume 4 Exhibit 1 Flood Profiles Middle River Rouge Morrison Drain Mosquito Drain No. 1 Drain No. 3 Drain North Branch Ecorse Creek North Branch Swan Creek Randolph Street Drain River Rouge Short Cut Canal 101P 110P 111P 112P 113P 114P 115P 125P 126P 136P 137P 139P 140P 141P 142P iii

6 EXHIBITS (continued) Exhibits Volume 4 (continued) Exhibit 1 Flood Profiles Silver Creek Silver Creek Diversion to Smith Creek Sines Drain Smith Creek Smith Creek / Silver Creek Overflow South Branch Ecorse Creek Sexton-Kilfoil Drain South Branch Tonquish Creek Sutliff and Kenope Drain Tarabusi Creek Thorofare Canal Tonquish Creek Trenton Channel Tributary No. 1 Unnamed Drain 1 to Brownstown Creek Unnamed Drain 2 to Brownstown Creek Upper River Rouge Willow Creek Page 143P 149P 150P 151P 152P 153P 160P 161P 162P 164P 165P 166P 167P 169P 170P 171P 172P 176P 177P 179P 180P 184P 185P 186P 187P 188P 189P 190P 192P 193P 195P PUBLISHED SEPARATELY Flood Insurance Rate Map Index Flood Insurance Rate Maps iv

7 CROSS GREEN MEADOWS DRAIN A B C DISTANCE 1 REDUCED STUDY , , Feet above confluence with Tonquish Creek DATA GREEN MEADOWS DRAIN

8 CROSS HAND DRAIN A B C D E F G DISTANCE 1 REDUCED STUDY , , , , , Feet above confluence with Silver Creek DATA HAND DRAIN

9 CROSS HEAD DRAIN A B C D E F G DISTANCE 1 REDUCED STUDY 2, , , , , , , Feet above confluence with Griggs Drain DATA HEAD DRAIN

10 CROSS HUNTINGTON CREEK A B C D E F G H I J DISTANCE 1 REDUCED STUDY , , , , , , , , , , , Feet above confluence with Trenton Channel 2 Elevation computed without consideration of backwater effects from Trenton Channel DATA HUNTINGTON CREEK

11 CROSS DISTANCE 1 HURON RIVER A B C D E F G H I J K L M N O P Q R S T U V W X Y 1 Miles above mouth at Lake Erie 2 Width/Width within Wayne County limits 3 Elevation computed without consideration of backwater effects from Lake Erie REDUCED STUDY /94 2 3, / , /91 2 2, /90 2 4, / , /73 2 2, /77 2 2, , / , / , /85 2 2, /90 2 2, /90 2 7, /80 2 3, /75 2 2, / , /45 2 8, / , ,470/1, , /70 2 1, ,648/1, , ,422/90 2 8, ,222/1, , ,270/ , ,481/ , DATA HURON RIVER

12 CROSS HURON RIVER (CONTINUED) Z AA AB AC AD AE AF AG AH AI AJ AK DISTANCE 1 REDUCED STUDY / , / , , , , ,122 4, ,123 4, , , , , ,250 13, Miles above mouth at Lake Erie 2 Width/Width within Wayne County limits DATA HURON RIVER

13 CROSS JEFFERSON AVENUE DIVERSION A B C DISTANCE 1 REDUCED STUDY , Feet above confluence with Trenton Channel 2 Elevation computed without consideration of backwater effects from Trenton Channel DATA JEFFERSON AVENUE DIVERSION

14 CROSS JOHNSON DRAIN A B C D E F G H I J K L M N O P Q R DISTANCE 1 REDUCED STUDY 2, , , , , , , , , , , , , , , , , , , , , Feet above confluence with Middle River Rouge DATA JOHNSON DRAIN

15 CROSS JOHNSON DRAIN TRIBUTARY A B C D E DISTANCE 1 REDUCED STUDY , , , , Feet above confluence with Johnson Drain 2 Elevation computed without consideration of backwater effects from Johnson Drain DATA JOHNSON DRAIN TRIBUTARY

16 CROSS KING DRAIN A B C D DISTANCE 1 REDUCED STUDY , , , Feet above confluence with North Branch Swan Creek 2 Elevation computed without consideration of backwater effects from North Branch Swan Creek DATA KING DRAIN

17 CROSS LAMKE DRAIN A B C DISTANCE 1 REDUCED STUDY , , Feet above confluence with Bradshaw Drain DATA LAMKE DRAIN

18 CROSS LORDS DRAIN A B C D E F G H DISTANCE 1 REDUCED STUDY 1, , , , , , , , Feet above confluence with Desbrow Drain DATA LORDS DRAIN

19 CROSS DISTANCE 1 LOWER RIVER ROUGE A B C D E F G H I J K L M N O P Q R S T U V W X 1 Feet above confluence with River Rouge REDUCED STUDY 76, , ,313 1,031 4, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , DATA LOWER RIVER ROUGE

20 CROSS LOWER RIVER ROUGE (CONTINUED) Y Z DISTANCE 1 REDUCED STUDY 126, , Feet above confluence with River Rouge DATA LOWER RIVER ROUGE

21 CROSS MARSH CREEK A B C D E F G H I J K L M N O P Q R S T U V DISTANCE 1 REDUCED STUDY , , , , , , , , , , , , , , , , , , , , , , , , , BLAKELY DRAIN W 20, Feet above confluence with Brownstown Creek DATA MARSH CREEK/BLAKELY DRAIN

22 CROSS DISTANCE 1 BLAKELY DRAIN (CONTINUED) X Y Z AA AB AC AD AE AF AG AH AI AJ AK AL AM AN AO AP AQ AR AS AT AU 1 Feet above confluence with Brownstown Creek REDUCED STUDY 22, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , DATA BLAKELY DRAIN

23 CROSS DISTANCE 1 BLAKELY DRAIN (CONTINUED) AV AW AX AY AZ BA BB BC BD BE BF BG BH BI BJ BK BL BM BN BO BP BQ BR BS 1 Feet above confluence with Brownstown Creek REDUCED STUDY 36, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , DATA BLAKELY DRAIN

24 CROSS BLAKELY DRAIN (CONTINUED) BT BU BV BW DISTANCE 1 REDUCED STUDY 51, , , , , , , , Feet above confluence with Brownstown Creek DATA BLAKELY DRAIN

25 CROSS McCLAUGHREY DRAIN A B C D E F G H I J K L M N O P DISTANCE 1 REDUCED STUDY 6, , , , , , , , , , , , , , , , , Feet above confluence with Lower River Rouge DATA McCLAUGHREY DRAIN

26 CROSS DISTANCE 1 MIDDLE RIVER ROUGE A B C D E F G H I J K L M N O P Q R S T U V W X 1 Feet above confluence with River Rouge 2 Elevation computed without consideration of backwater effects from Rouge River REDUCED STUDY , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , DATA MIDDLE RIVER ROUGE

27 CROSS DISTANCE 1 MIDDLE RIVER ROUGE (CONTINUED) Y Z AA AB AC AD AE AF AG AH AI AJ AK AL AM AN AO AP AQ AR AS AT AU 1 Feet above confluence with River Rouge * Data not computed REDUCED STUDY 22, , , , , , , , , , , , , , , , , , , , , ,115 * * * * * * 89,505 * * * * * * 96,275 * * * * * * 100,885 * * * * * * 104,415 * * * * * * 106, , , , , , , , , , , DATA MIDDLE RIVER ROUGE

28 CROSS DISTANCE 1 MIDDLE RIVER ROUGE (CONTINUED) AV AW AX AY AZ BA BB BC BD BE BF BG BH BI BJ BK BL BM BN BO BP BQ BR 1 Feet above confluence with River Rouge REDUCED STUDY 109, , , , , , , , , , , , , , , , , , , , , , , , , , , , , DATA MIDDLE RIVER ROUGE

29 CROSS MIDDLE RIVER ROUGE (CONTINUED) BS BT BU BV BW BX BY BZ CA CB CC CD CE CF CG CH CI DISTANCE 1 REDUCED STUDY 125, , , , , , , , , , , , , , , , , , , Feet above confluence with River Rouge DATA MIDDLE RIVER ROUGE

30 CROSS MORRISON DRAIN A B C D E F G H I J K L M N O DISTANCE 1 REDUCED STUDY , , , , , , , , , , , , , Feet above confluence with Silver Creek 2 Elevation computed without consideration of backwater effects from Lake Erie DATA MORRISON DRAIN

31 CROSS MOSQUITO DRAIN A B C D E F DISTANCE 1 REDUCED STUDY , , , , , Feet above Monroe/Wayne County boundary DATA MOSQUITO DRAIN

32 CROSS NO. 1 DRAIN A B C D DISTANCE 1 REDUCED STUDY , , Feet above confluence with North Branch Swan Creek 2 Elevation computed without consideration of backwater effects from North Branch Swan Creek DATA NO. 1 DRAIN

33 CROSS NO. 3 DRAIN A B C D E F G DISTANCE 1 REDUCED STUDY , , , , , Feet above confluence with North Branch Swan Creek 2 Elevation computed without consideration of backwater effects from North Branch Swan Creek DATA NO. 3 DRAIN

34 CROSS NORTH BRANCH ECORSE CREEK A B C D E F G H I J K L M N O P Q R S T U V W DISTANCE 1 REDUCED STUDY , , , , , , , , , , , , , , , , , , , , , , , , , X 1 Feet above confluence with Ecorse Creek 2 Elevation computed without consideration of backwater effects from Detroit River DATA NORTH BRANCH ECORSE CREEK

35 CROSS DISTANCE 1 NORTH BRANCH ECORSE CREEK (CONTINUED) Y Z AA AB AC AD AE AF AG AH AI AJ AK AL AM AN AO AP AQ AR AS AT AU 1 Feet above confluence with Ecorse Creek REDUCED STUDY 13, , , , , , , , , , , , , , , , , , , , , , , DATA NORTH BRANCH ECORSE CREEK

36 CROSS DISTANCE 1 NORTH BRANCH ECORSE CREEK (CONTINUED) AV AW AX AY AZ BA BB BC BD BE BF BG BH BI BJ BK BL BM BN BO BP BQ BR 1 Feet above confluence with Ecorse Creek REDUCED STUDY 29, , , , , , , , , , , , , , , , , , , , , , , DATA NORTH BRANCH ECORSE CREEK

37 CROSS NORTH BRANCH ECORSE CREEK (CONTINUED) BS BT BU BV BW BX BY BZ CA CB CC CD CE CF CG CH CI CJ CK CL CM CN CO DISTANCE 1 1 Feet above confluence with Ecorse Creek REDUCED STUDY 35, , , , , , , , , , , , , , , , , , , , , , , DATA NORTH BRANCH ECORSE CREEK

38 CROSS NORTH BRANCH ECORSE CREEK (CONTINUED) CP CQ CR CS CT CU CV CW CX CY CZ DA DB DC DD DE DF DG DH DI DJ DK DL DISTANCE 1 1 Feet above confluence with Ecorse Creek REDUCED STUDY 39, , , , , , , , , , , , , , , , , , , , , , , , , DATA NORTH BRANCH ECORSE CREEK

39 CROSS NORTH BRANCH ECORSE CREEK (CONTINUED) DM DN DO DP DQ DR DS DT DU DV DW DX DISTANCE 1 REDUCED STUDY 50, , , , , , , , , , , , , , Feet above confluence with Ecorse Creek DATA NORTH BRANCH ECORSE CREEK

40 CROSS DISTANCE 1 NORTH BRANCH SWAN CREEK A B C D E F G H I J K L M N O P Q R S T U V W X 1 Feet above confluence with Swan Creek REDUCED STUDY 10, , , , , , , , , , , , , , , , , , , , , , , , , , DATA NORTH BRANCH SWAN CREEK

41 CROSS DISTANCE 1 NORTH BRANCH SWAN CREEK (CONTINUED) Y Z AA AB AC AD AE AF AG AH AI AJ AK AL AM AN AO AP AQ AR AS AT AU 1 Feet above confluence with Swan Creek REDUCED STUDY 44, , , , , , , , , , , , , , , , , , , , , , , DATA NORTH BRANCH SWAN CREEK

42 CROSS NORTH BRANCH SWAN CREEK (CONTINUED) AV AW AX AY AZ BA BB BC BD BE BF BG BH BI BJ DISTANCE 1 REDUCED STUDY 56, , , , , , , , , , , , , , , Feet above confluence with Swan Creek DATA NORTH BRANCH SWAN CREEK

43 CROSS RANDOLPH STREET DRAIN A B C D E F G H I J K L M N O P Q R S T U V DISTANCE 1 REDUCED STUDY , , , , , , , , , , , , , , , , , , , ,704 25/14² Feet above confluence with Middle River Rouge 2 Width/Width within study limits DATA RANDOLPH STREET DRAIN

44 CROSS DISTANCE 1 SILVER CREEK A B C D E F G H I J K L M N O P Q R S T U V W X Y 1 Feet above confluence with Huron River 2 Elevation computed without consideration of backwater effects from Lake Erie REDUCED STUDY 8, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , DATA SILVER CREEK

45 CROSS DISTANCE 1 SILVER CREEK (CONTINUED) Z AA AB AC AD AE AF AG AH AI AJ AK AL AM AN AO AP AQ AR AS AT AU AV AW 1 Feet above confluence with Huron River REDUCED STUDY 16, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , DATA SILVER CREEK

46 CROSS SILVER CREEK (CONTINUED) AX AY AZ BA BB BC BD BE BF BG BH BI BJ BK BL BM BN BO BP BQ BR DISTANCE 1 REDUCED STUDY 33, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Feet above confluence with Huron River DATA SILVER CREEK

47 CROSS SINES DRAIN A B C D E F G H I J K L M N O P Q DISTANCE 1 REDUCED STUDY , , , , , , , , , , , , , , , , Feet above confluence with Lower River Rouge 2 Elevation computed without consideration of backwater effects from Lower River Rouge DATA SINES DRAIN

48 CROSS DISTANCE 1 SMITH CREEK A B C D E F G H I J K L M N O P Q R S T U V W X Y 1 Feet above Interstate 75 REDUCED STUDY , , , , , , , , , , , , , , , , , , , , , , , , , , DATA SMITH CREEK

49 CROSS SMITH CREEK (CONTINUED) Z AA AB AC AD DISTANCE 1 REDUCED STUDY 33,387 * * * * * * 35,160 * * * * * * 37,895 * * * * * * 38,635 * * * * * * 41,167 * * * * * * 1 Feet above Interstate 75 DATA SMITH CREEK

50 CROSS SMITH CREEK/ SILVER CREEK OVERFLOW A DISTANCE 1 REDUCED STUDY 9, Feet above confluence with Huron River 2 Elevation computed without consideration of backwater effects from Lake Erie DATA SMITH CREEK/SILVER CREEK OVERFLOW

51 CROSS SOUTH BRANCH ECORSE CREEK A B C D E F G H I J K L M N O P Q R S T DISTANCE 1 REDUCED STUDY , , , , , , , , , , , , , , , , , , , SEXTON-KILFOIL DRAIN U 25, Feet above confluence with North Branch Ecorse Creek 2 Elevation computed without consideration of backwater effects from Detroit River DATA SOUTH BRANCH ECORSE CREEK/ SEXTON-KILFOIL DRAIN

52 CROSS SEXTON-KILFOIL DRAIN (CONTINUED) V W X Y Z AA AB AC AD AE AF AG DISTANCE 1 REDUCED STUDY 27, , , , , , , , , , , , , , Feet above confluence with North Branch Ecorse Creek DATA SEXTON-KILFOIL DRAIN

53 CROSS SOUTH BRANCH TONQUISH CREEK A B C D E F G H I J K L M N O P Q R S DISTANCE 1 REDUCED STUDY , , , , , , , , , , , , , , , , , , , Feet above confluence with Tonquish Creek DATA SOUTH BRANCH TONQUISH CREEK

54 CROSS SUTLIFF AND KENOPE DRAIN A B C D E F G H I DISTANCE 1 REDUCED STUDY , , , , , , , , Feet above North Line Road DATA SUTLIFF AND KENOPE DRAIN

55 CROSS TARABUSI CREEK A B C D E F G H I J K L M N O P Q R S T U V W X Y DISTANCE 1 1 Feet above confluence with Bell Branch REDUCED STUDY 1, , , , , , , , , , , , , , , , , , , , , , , , , , , , , DATA TARABUSI CREEK

56 CROSS TARABUSI CREEK (CONTINUED) Z AA AB AC DISTANCE 1 REDUCED STUDY 21, , , , Feet above confluence with Bell Branch DATA TARABUSI CREEK

57 REDUCED STUDY CROSS DISTANCE 1 TONQUISH CREEK A 200 * * * * * * B 2,220 * * * * * * C 3,825 * * * * * * D 3,975 * * * * * * E 7,500 * * * * * * F 10,650 * * * * * * G 12,840 * * * * * * H 14,300 * * * * * * I 14,400 * * * * * * J 15,700 * * * * * * K 17,375 * * * * * * L 17,450 * * * * * * M 19,550 * * * * * * N 20, O 21, , P 22, , Q 25, R 25, , S 27, T 29, U 32, , V 32, W 33, X 35, Y 37, Feet above confluence with Middle River Rouge * Data not computed DATA TONQUISH CREEK

58 CROSS TONQUISH CREEK (CONTINUED) Z AA AB AC AD AE AF AG AH AI AJ AK AL DISTANCE 1 REDUCED STUDY 38, , , , , , , , , , , , , Feet above confluence with Middle River Rouge DATA TONQUISH CREEK

59 CROSS TRIBUTARY NO. 1 A B C D E F G H I J K DISTANCE 1 REDUCED STUDY , , , , , , , , , , Feet above confluence with Bell Branch 2 Elevation computed without consideration of backwater effects from Bell Branch DATA TRIBUTARY NO. 1

60 CROSS DISTANCE 1 UPPER RIVER ROUGE A B C D E F G H I J K L M N O P Q R S T U V W X 1 Feet above confluence with River Rouge REDUCED STUDY 1, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , DATA UPPER RIVER ROUGE