VOLUME 7 OF 8 MIDDLESEX COUNTY, MASSACHUSETTS COMMUNITY NAME COMMUNITY NUMBER ACTON, TOWN OF 250176 ARLINGTON, TOWN OF 250177 Middlesex County ASHBY, TOWN OF 250178 ASHLAND, TOWN OF 250179 AYER, TOWN OF 250180 BEDFORD, TOWN OF 255209 COMMUNITY NAME COMMUNITY NUMBER BELMONT, TOWN OF 250182 MELROSE, CITY OF 250206 BILLERICA, TOWN OF 250183 NATICK, TOWN OF 250207 BOXBOROUGH, TOWN OF 250184 NEWTON, CITY OF 250208 BURLINGTON, TOWN OF 250185 NORTH READING, TOWN OF 250209 CAMBRIDGE, CITY OF 250186 PEPPERELL, TOWN OF 250210 CARLISLE, TOWN OF 250187 READING, TOWN OF 250211 CHELMSFORD, TOWN OF 250188 SHERBORN, TOWN OF 250212 CONCORD, TOWN OF 250189 SHIRLEY, TOWN OF 250213 DRACUT, TOWN OF 250190 SOMERVILLE, CITY OF 250214 DUNSTABLE, TOWN OF 250191 STONEHAM, TOWN OF 250215 EVERETT, CITY OF 250192 STOW, TOWN OF 250216 FRAMINGHAM, TOWN OF 250193 SUDBURY, TOWN OF 250217 GROTON, TOWN OF 250194 TEWKSBURY, TOWN OF 250218 HOLLISTON, TOWN OF 250195 TOWNSEND, TOWN OF 250219 HOPKINTON, TOWN OF 250196 TYNGSBOROUGH, TOWN OF 250220 HUDSON, TOWN OF 250197 WAKEFIELD, TOWN OF 250221 LEXINGTON, TOWN OF 250198 WALTHAM, CITY OF 250222 LINCOLN, TOWN OF 250199 WATERTOWN, TOWN OF 250223 LITTLETON, TOWN OF 250200 WAYLAND, TOWN OF 250224 LOWELL, CITY OF 250201 WESTFORD, TOWN OF 250225 MALDEN, CITY OF 250202 WESTON, TOWN OF 250226 MARLBOROUGH, CITY OF 250203 WILMINGTON, TOWN OF 250227 MAYNARD, TOWN OF 250204 WINCHESTER, TOWN OF 250228 MEDFORD, CITY OF 250205 WOBURN, CITY OF 250229 Federal Emergency Management Agency FLOOD INSURANCE STUDY NUMBER 25017CV007B
NOTICE TO FLOOD INSURANCE STUDY USERS Communities participating in the National Flood Insurance Program 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 and republished at any time. In addition, part of this FIS may be revised by the Letter of Map Revision process, which does not involve republication or redistribution of the FIS. It is, therefore, the responsibility of the user to consult with community officials and to check the community repository to obtain the most current FIS components. Initial Countywide FIS Effective Date: June 4, 2010 Revised Countywide FIS Date: July 7, 2014
TABLE OF CONTENTS Volume 1- July 7, 2014 Page 1.0 INTRODUCTION 1 1.1 Purpose of Study 1 1.2 Authority and Acknowledgments 2 1.3 Coordination 12 2.0 AREA STUDIED 14 2.1 Scope of Study 14 2.2 Community Description 22 2.3 Principal Flood Problems 23 2.4 Flood Protection Measures 27 3.0 ENGINEERING METHODS 33 3.1 Hydrologic Analyses 34 3.2 Hydraulic Analyses 93 3.3 Vertical Datum 104 4.0 FLOODPLAIN MANAGEMENT APPLICATIONS 105 4.1 Floodplain Boundaries 105 4.2 Floodways 107 5.0 INSURANCE APPLICATIONS 109 6.0 FLOOD INSURANCE RATE MAP 109 7.0 OTHER STUDIES 116 8.0 LOCATION OF DATA 116 9.0 BIBLIOGRAPHY AND REFERENCES 117 i
TABLE OF CONTENTS Volume 1 continued FIGURES Page Figure 1 Floodway Schematic 108 TABLES Table 1 Initial and Final CCO Meetings 13-14 Table 2 Scope of Revision 15 Table 3 Letters of Map Change 16 Table 4 Flooding Sources Studied by Detailed Methods 17-18 Table 5 Areas Studied by Detailed Methods for Concord Watershed Revised Countywide Analyses 19-20 Table 6 Areas Studied by Redelineation for Concord Watershed Revised Countywide Analyses 21 Table 7 Areas Studied by Approximate Methods for Concord Watershed Revised Countywide Analyses 21-22 Table 8 Summary of Discharges 51-84 Table 9 Summary of Stillwater Elevations 85-86 Table 10 Manning s n Values 99-103 Table 11 Community Map History 111-115 TABLE OF CONTENTS Volume 2 - July 7, 2014 TABLES continued Table 12 Floodway Data 1-140 ii
TABLE OF CONTENTS Volume 3 - July 7, 2014 EXHIBITS Exhibit 1 - Flood Profiles Aberjona River Aberjona River North Spur Alewife Brook (Little River) Angelica Brook Assabet Branch No. 3 Assabet Branch No. 4 Assabet River Baddacook Brook Baiting Brook Bear Meadow Brook Beaver Brook 1 Beaver Brook 2 Beaver Brook 2 - Split 1 Beaver Brook 2 - Split 2 Beaver Brook 2 - Split 3 Beaver Brook 3 Beaver Brook 4 Beaver Brook 5 Beaver Dam Brook Bennetts Brook Birch Meadow Brook Black Brook Bogastow Brook - Jar Brook Bogle Brook 1 Bogle Brook 2 Boons Pond Branch Boutwell Brook Bow Brook Panels 01P 08P Panels 09P 10P Panels 11P 13P Panels 14P 15P Panels 16P 17P Panel 18P Panels 19P 38P Panels 39P 40P Panels 41P 43P Panel 44P Panels 45P 49P Panels 50P 54P Panels 55P Panels 56P Panels 57P Panels 58P 61P Panels 62P 71P Panels 72P 73P Panels 74P 82P Panels 83P 87P Panel 88P Panel 89P Panels 90P 95P Panels 96P 97P Panels 98P 103P Panel 104P Panels 105P 106P Panels 107P 108P TABLE OF CONTENTS Volume 4 - July 7, 2014 EXHIBITS continued Exhibit 1 - Flood Profiles continued Branch of Assabet River Branch of Elizabeth Brook 1 Broad Meadow Brook Brook A of Shawsheen River Brook from Waushakum Pond Butter Brook Catacoonamug Brook Charles River Cheese Cake Brook Panels 109P 110P Panel 111P Panels 112P 113P Panel 114P Panels 115P 116P Panels 117P 119P Panels 120P 121P Panels 122P 133P Panel 134P iii
TABLE OF CONTENTS Volume 4 continued EXHIBITS continued Exhibit 1 - Flood Profiles continued Cherry Brook Chester Brook Chicken Brook Cochituate Brook Cold Brook Cold Spring Brook Cole's Brook Collins Brook Conant Brook Concord River Content Brook - Middlesex Canal Course Brook Cow Pond Brook Cranberry Brook Cummings Brook Dakins Brook Danforth Brook Darby Brook Davis Brook Dirty Meadow Brook Dopping Brook Dudley Brook / Tributary A to Dudley Brook East Outlet Elizabeth Brook 1 Elizabeth Brook 2 Elm Brook Farley Brook Farley Brook Split 1 Farrar Pond Brook Fort Meadow Brook Panels 135P 137P Panels 138P 141P Panels 142P 145P Panel 146P Panel 147P Panels 148P 151P Panel 152P Panel 153P Panels 154P 157P Panels 158P 164P Panels 165P 167P Panel 168P Panels 169P 171P Panels 172P 173P Panels 174P 175P Panel 176P Panels 177P 180P Panels 181P 182P Panels 183P 184P Panel 185P Panels 186P 187P Panels 188P 191P Panels 192P 193P Panels 194P 197P Panels 198P 203P Panels 204P 206P Panels 207P 208P Panels 209P Panels 210P 211P Panels 212P 217P TABLE OF CONTENTS Volume 5 - July 7, 2014 EXHIBITS continued Exhibit 1 - Flood Profiles continued Fort Pond Brook Fort Pond Brook Branch 1 Fort Pond Brook Branch 2 Grassy Pond Brook Graves Pond Brook Panels 218P 225P Panel 226P Panel 227P Panels 228P 229P Panel 230P iv
TABLE OF CONTENTS Volume 5 continued EXHIBITS continued Exhibit 1 - Flood Profiles continued Great Road Tributary Greens Brook Guggins Brook Gumpas Pond Brook Hales Brook Halls Brook Hayward Brook Heath Brook Heath Hen Meadow Brook Heath Hen Meadow Brook Split Hobbs Brook 1 Hobbs Brook 2 Hog Brook Hop Brook Horn Pond Brook / Fowle Brook Inch Brook Ipswich River James Brook Jenny Dugan Brook Jones Brook Kiln Brook King Street Tributary Landham - Allowance Brook Lawrence Brook Little Brook Locke Brook Lower Spot Pond Brook Lubbers Brook Malden River Maple Meadow Brook Marginal Brook Marshall Brook Martins Brook Panel 231P Panels 232P 233P Panels 234P 236P Panel 237P Panels 238P 239P Panels 240P 242P Panels 243P 244P Panels 245P 246P Panels 271P 248P Panels 249P Panels 250P 251P Panels 252P 253P Panels 254P 255P Panels 256P 260P Panels 261P 263P Panel 264P Panels 265P 270P Panels 271P 278P Panels 279P 280P Panels 281P 282P Panels 283P 284P Panels 285P 286P Panels 287P 291P Panels 292P 294P Panel 295P Panels 296P 297P Panel 298P Panels 299P 304P Panels 305P 307P Panels 308P 310P Panel 311P Panels 312P 314P Panels 315P 317P TABLE OF CONTENTS Volume 6 - July 7, 2014 EXHIBITS continued Exhibit 1 - Flood Profiles continued Martins Pond Brook Mascuppic Brook Mason Brook Meadow Brook Panels 318P 319P Panels 320P 321P Panels 322P 325P Panels 326P 327P v
TABLE OF CONTENTS Volume 6 continued EXHIBITS continued Exhibit 1 - Flood Profiles continued Meadow River Branch Merrimack River Mill Brook 1 Mill Brook 2 Mill Brook 3 Mill Pond Tributary Mill River Mineway Brook Mongo Brook Morse Brook Mowry Brook Mud Pond Brook Muddy Brook Mulpus Brook Munroe Brook Mystic River Nagog Brook Nashoba Brook Nashua River Nissitissit River Nonacoicus Brook 1 Nonacoicus Brook 2 North Lexington Brook Pages Brook Pages Brook Branch Pantry Brook Pearl Hill Brook Peppermint Brook Pine Brook Pole Brook Pratts Brook Putnam Brook Reedy Meadow Brook Panels 328P 329P Panels 330P 332P Panels 333P 335P Panels 336P 337P Panels 338P 341P Panels 342P 343P Panels 344P 346P Panels 347P 352P Panels 353P 354P Panel 355P Panels 356P 357P Panel 358P Panel 359P Panels 360P 368P Panels 369P 371P Panels 372P 374P Panels 375P 377P Panels 378P 381P Panels 382P 389P Panels 390P 392P Panels 393P 394P Panel 395P Panels 396P 398P Panels 399P 401P Panel 402P Panels 403P 405P Panels 406P 409P Panel 410P Panel 411P Panels 412P 415P Panels 416P Panels 417P Panels 418P 420P TABLE OF CONTENTS Volume 7 - July 7, 2014 EXHIBITS continued Exhibit 1 - Flood Profiles continued Reservoir No. 1 - North Branch and Reservoir No. 3 Richardson Brook River Meadow Brook Run Brook Panels 421P 422P Panels 423P 425P Panels 426P 430P Panels 431P 433P vi
TABLE OF CONTENTS Volume 7 EXHIBITS continued Exhibit 1 - Flood Profiles continued Salmon Brook Sandy Brook Saugus River Saunders Brook Sawmill Brook 1 Sawmill Brook 2 Schneider Brook Shakers Glen Brook Shawsheen River Skug River Snake Brook South Meadow Brook - Paul Brook Spencer Brook Spring Brook Squannacook River Stony Brook Stony Brook 1 Stony Brook 2 Strong Water Brook Sudbury River Sutton Brook Sweetwater Brook Tadmuck Brook Tadmuck Swamp Brook Panels 434P 436P Panels 437P 438P Panels 439P 443P Panel 444P Panels 445P 446P Panel 447P Panels 448P 449P Panel 450P Panels 451P 457P Panels 458P 459P Panels 460P 461P Panels 462P 463P Panel 464P 467P Panels 468P 470P Panels 471P 477P Panels 478P 479P Panels 480P 494P Panels 495P 501P Panels 502P 503P Panels 504P 513P Panels 514P 515P Panel 516P Panels 517P 518P Panel 519P TABLE OF CONTENTS Volume 8 - July 7, 2014 EXHIBITS continued Exhibit 1 - Flood Profiles continued Taylor Brook Tributary 1 to Cole s Brook Tributary 1 to Sudbury River Tributary 2 to Assabet River Tributary 2 to Tributary 1 to Cole s Brook Tributary 3 to Bogle Brook 2 Tributary 4 to Bogle Brook 2 Tributary A to Cold Brook Tributary A to Course Brook Tributary A to Hop Brook Tributary A to Pantry Brook Tributary A to Squannacook River Tributary B to Hop Brook Panel 520P Panel 521P Panel 522P Panel 523P Panel 524P Panel 525P Panel 526P Panels 527P 529P Panel 530P Panels 531P 532P Panels 533P 534P Panels 535P 536P Panel 537P vii
TABLE OF CONTENTS Volume 8 continued EXHIBITS continued Exhibit 1 - Flood Profiles continued Tributary B to Squannacook River Tributary B to Vine Brook Tributary C to Vine Brook Tributary to Beaver Brook 3 Tributary to Cold Spring Brook Tributary to Indian Brook Tributary to Martins Brook Tributary to Mill Brook Tributary to Nonacoicus Brook 1/Long Pond Brook Tributary to Waushakum Pond Trout Brook Trout Brook 1 Trout Brook 2 Trull Brook Trull Brook Tributary Unkety Brook Valley Pond Varnum Brook Vine Brook Walker Brook 1 Walker Brook 2 Walker Brook 3 Walkers Brook Wellington Brook West Chester Brook Whitehall Brook Willard Brook Winthrop Canal Witch Brook Panels 538P 539P Panels 540P 541P Panels 542P 543P Panel 544P Panels 545P 546P Panel 547P Panel 548P Panels 549P 552P Panels 553P 557P Panels 558P 559P Panels 560P 561P Panel 562P Panels 563P 565P Panels 566P 571P Panels 572P 573P Panels 574P 576P Panel 577P Panels 578P 581P Panels 582P 588P Panels 589P 591P Panels 592P 595P Panels 596P 598P Panels 599P 602P Panel 603P Panels 604P 606P Panels 607P 609P Panels 610P 611P Panels 612P 613P Panels 614P 615P Exhibit 2 - Flood Insurance Rate Map Index Flood Insurance Rate Map viii
FEDERAL EMERGENCY MANAGEMENT AGENCY RESERVOIR NO. 1 - NORTH BRANCH AND RESERVOIR NO. 3 190 190 1% ANNUAL CHANCE BACKWATER FROM SUDBURY RIVER 185 185 180 180 175 175 TO BE SHOWN SEPARATELY 170 170 165 165 RESERVOIR NO. 1 - NORTH BRANCH 160 160 155 155 150 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000 STREAM DISTANCE IN FEET ABOVE RESERVOIR NO. 1 DAM 421P RESERVOIR NO. 1 DAM SALEM END ROAD WORCESTER ROAD (STATE ROUTE 9) RAILROAD (INTERSTATE 90) MASSACHUSETTS TURNPIKE THE PROFILE IS TOO CLOSE TO THE 1% ANNUAL CHANCE ELEVATION RESERVOIR NO. 3 CONFLUENCE OF ANGELICA BROOK RESERVOIR NO. 3 DAM 145
FEDERAL EMERGENCY MANAGEMENT AGENCY RESERVOIR NO. 1 - NORTH BRANCH AND RESERVOIR NO. 3 195 195 190 190 185 185 180 180 175 175 13000 14000 15000 16000 17000 STREAM DISTANCE IN FEET ABOVE RESERVOIR NO. 1 DAM 422P PLEASANT STREET COUNTY BOUNDARY
FEDERAL EMERGENCY MANAGEMENT AGENCY RICHARDSON BROOK 120 120 1% ANNUAL CHANCE BACKWATER FROM MERRIMACK RIVER PROFILE 110 IS TOO CLOSE TO THE 1% ANNUAL CHANCE 110 FLOOD ELEVATION TO BE SHOWN SEPARATELY 100 100 90 90 80 80 70 70 60 60 E 50 50 40 A B C D 30 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH MERRIMACK RIVER 423P DAM CONFLUENCE WITH MERRIMACK RIVER METHUEN STREET CONFLUENCE OF TROUT BROOK 1 MERRIMAC AVENUE (STATE ROUTE 110) CRANBERRY ROAD
FEDERAL EMERGENCY MANAGEMENT AGENCY RICHARDSON BROOK 120 110 100 F G H 6500 7000 7500 8000 8500 9000 9500 10000 10500 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH MERRIMACK RIVER 120 110 100 424P BLACKSMITH ROAD LOON HILL ROAD
FEDERAL EMERGENCY MANAGEMENT AGENCY RICHARDSON BROOK 170 170 160 160 150 150 140 140 130 130 120 120 110 10500 11000 11500 12000 12500 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH MERRIMACK RIVER 425P STATE ROUTE 113 (BROADWAY STREET) LIMIT OF DETAILED STUDY I
STATE BOUNDARY 170 170 165 165 MAIN STREET SALMON BROOK 160 160 155 155 150 150 145 145 A ABANDONED RAILROAD B C D E F G H I 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000 STREAM DISTANCE IN FEET ABOVE STATE BOUNDARY* *STATE BOUNDARY IS APPROXIMATELY 12,400 FEET DOWNSTREAM OF MAIN STREET J K L FEDERAL EMERGENCY MANAGEMENT AGENCY 434P
LOWER MASSAPOAG POND MASSAPOAG POND STATE ROUTE 113 170 170 MASSAPOAG POND DAM SALMON BROOK 165 165 160 160 155 155 150 150 145 CULVERT M N O P Q R S T U V 13000 14000 15000 16000 17000 18000 19000 20000 21000 22000 23000 24000 25000 26000 STREAM DISTANCE IN FEET ABOVE STATE BOUNDARY* *STATE BOUNDARY IS APPROXIMATELY 12,400 FEET DOWNSTREAM OF MAIN STREET W FEDERAL EMERGENCY MANAGEMENT AGENCY 435P
MASSAPOAG POND LIMIT OF DETAILED STUDY 170 170 SALMON BROOK 165 165 160 160 155 155 150 150 24000 25000 26000 27000 28000 29000 30000 STREAM DISTANCE IN FEET ABOVE STATE BOUNDARY* *STATE BOUNDARY IS APPROXIMATELY 12,400 FEET DOWNSTREAM OF MAIN STREET FEDERAL EMERGENCY MANAGEMENT AGENCY 436P
FEDERAL EMERGENCY MANAGEMENT AGENCY SANDY BROOK 1% ANNUAL CHANCE BACKWATER FROM VINE BROOK 130 130 125 125 CULVERT 120 120 F G H 115 115 A B C D E 0 400 800 1200 1600 2000 2400 2800 3200 3600 4000 4400 4800 5200 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH VINE BROOK 437P CONFLUENCE WITH VINE BROOK SANDY BROOK ROAD HILLTOP DRIVE MAUD GRAHAM CIRCLE MAUD GRAHAM CIRCLE
FEDERAL EMERGENCY MANAGEMENT AGENCY SANDY BROOK 140 140 135 135 130 130 125 125 120 120 5200 5600 6000 6400 6800 7200 7600 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH VINE BROOK 438P BEDFORD STREET RAYMOND ROAD EXTENSION LIMIT OF DETAILED STUDY I J K L
FEDERAL EMERGENCY MANAGEMENT AGENCY SAUGUS RIVER 60 60 55 55 50 50 D 45 45 A B C 0 400 800 1200 1600 2000 2400 2800 3200 3600 4000 4400 4800 5200 STREAM DISTANCE IN FEET ABOVE COUNTY BOUNDARY* *COUNTY BOUNDARY IS APPROXIMATELY 1,020 FEET DOWNSTREAM OF WATER STREET 439P COUNTY BOUNDARY CONFLUENCE OF MILL RIVER WATER STREET STATE ROUTE 129 AVENUE TRIBUTARY CONFLUENCE OF MONTROSE
75 75 70 70 DAM 65 65 60 60 SALEM STREET INTERSTATE 95 ACCESS ROAD SAUGUS RIVER 55 55 50 50 E F G H I J 5200 5600 6000 6400 6800 7200 7600 8000 8400 8800 9200 9600 10000 10400 STREAM DISTANCE IN FEET ABOVE COUNTY BOUNDARY* *COUNTY BOUNDARY IS APPROXIMATELY 1,020 FEET DOWNSTREAM OF WATER STREET FEDERAL EMERGENCY MANAGEMENT AGENCY 440P
SAUGUS RIVER 75 75 70 70 65 65 10400 10800 11200 11600 12000 12400 12800 13200 13600 14000 14400 14800 15200 15600 STREAM DISTANCE IN FEET ABOVE COUNTY BOUNDARY* *COUNTY BOUNDARY IS APPROXIMATELY 1,020 FEET DOWNSTREAM OF WATER STREET FEDERAL EMERGENCY MANAGEMENT AGENCY 441P
85 85 RAILROAD INTERSTATE 95 SAUGUS RIVER 80 80 75 75 70 70 65 65 15600 16000 16400 16800 17200 17600 18000 18400 18800 19200 19600 20000 20400 20800 STREAM DISTANCE IN FEET ABOVE COUNTY BOUNDARY* *COUNTY BOUNDARY IS APPROXIMATELY 1,020 FEET DOWNSTREAM OF WATER STREET FEDERAL EMERGENCY MANAGEMENT AGENCY 442P
FEDERAL EMERGENCY MANAGEMENT AGENCY SAUGUS RIVER 85 85 80 80 75 75 70 70 20800 21200 21600 22000 22400 22800 23200 23600 24000 24400 24800 25200 25600 STREAM DISTANCE IN FEET ABOVE COUNTY BOUNDARY* *COUNTY BOUNDARY IS APPROXIMATELY 1,020 FEET DOWNSTREAM OF WATER STREET 443P INTERSTATE 95 ON RAMP VERNON STREET CONFLUENCE OF READING DRAINAGE CANAL LOWELL STREET/STATE ROUTE 129 CONFLUENCE OF LAKE QUANNAPOWITT DAM
FEDERAL EMERGENCY MANAGEMENT AGENCY SAUNDERS BROOK 1% ANNUAL CHANCE BACKWATER FROM SHAWSHEEN RIVER 100 100 95 95 90 90 85 85 80 80 75 75 70 70 65 A B C 60 0 500 1000 1500 2000 2500 3000 3500 4000 4500 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH SHAWSHEEN RIVER 444P CONFLUENCE WITH SHAWSHEEN RIVER LIMIT OF DETAILED STUDY
FEDERAL EMERGENCY MANAGEMENT AGENCY SAWMILL BROOK 1 130 130 125 125 120 120 CULVERT 115 115 110 110 105 105 E F 100 100 95 A B C D 0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 STREAM DISTANCE IN FEET ABOVE DOWNSTREAM SIDE OF NOAH CLAPP DAM 445P LIMIT OF DETAILED STUDY NOAH CLAPP DAM MILL STREET
FEDERAL EMERGENCY MANAGEMENT AGENCY SAWMILL BROOK 1 130 130 125 125 120 120 115 115 110 2600 2800 3000 3200 3400 3600 STREAM DISTANCE IN FEET ABOVE DOWNSTREAM SIDE OF NOAH CLAPP DAM 446P LIMIT OF DETAILED STUDY G H
FEDERAL EMERGENCY MANAGEMENT AGENCY SCHNEIDER BROOK 1% ANNUAL CHANCE BACKWATER FROM ABERJONA RIVER 70 70 65 65 60 60 CULVERT 55 55 50 50 45 45 40 A B C 35 0 200 400 600 800 1000 1200 1400 1600 1800 2000 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH ABERJONA RIVER 448P CONFLUENCE WITH ABERJONA RIVER ACCESS ROAD ACCESS ROAD CULVERT
FEDERAL EMERGENCY MANAGEMENT AGENCY SCHNEIDER BROOK 90 90 85 85 80 80 75 75 70 70 65 65 I J 60 60 55 G D E F H 50 2000 2200 2400 2600 2800 3000 3200 3400 3600 3800 4000 4200 4400 4600 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH ABERJONA RIVER 449P WASHINGTON STREET SALEM STREET FORBES STREET ACCESS ROAD CULVERT CULVERT CULVERT CULVERTS ACCESS ROAD LIMIT OF DETAILED STUDY CULVERT
FEDERAL EMERGENCY MANAGEMENT AGENCY SHAKERS GLEN BROOK 65 65 CULVERT 60 60 55 55 50 50 45 45 40 40 A B C D E F 0 400 800 1200 1600 2000 2400 2800 3200 3600 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH FOWLE BROOK 450P CONFLUENCE WITH FOWLE BROOK FOOTBRIDGE TOTMAN ROAD LEXINGTON STREET CAMBRIDGE STREET US ROUTE 3 RUSSEL STREET ACCESS DRIVEWAY LIMIT OF DETAILED STUDY CULVERT CULVERT CULVERT CULVERT
FEDERAL EMERGENCY MANAGEMENT AGENCY ALL JURISDICTIONS SHAWSHEEN RIVER 80 80 75 75 70 70 65 65 60 60 D A B C 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000 STREAM DISTANCE IN FEET ABOVE COUNTY BOUNDARY* *COUNTY BOUNDARY IS APPROXIMATELY 1,250 FEET DOWNSTREAM OF INTERSTATE 93 451P COUNTY BOUNDARY INTERSTATE ROUTE 93 BRIDGE (APPROXIMATE LOCATION) CONFLUENCE OF BROOK A OF SHAWSHEEN RIVER SAUNDERS BROOK CONFLUENCE OF
FEDERAL EMERGENCY MANAGEMENT AGENCY ALL JURISDICTIONS SHAWSHEEN RIVER 90 90 85 85 80 80 75 75 70 70 L M 65 65 60 F H J E G I K 13000 14000 15000 16000 17000 18000 19000 20000 21000 22000 23000 24000 25000 26000 STREAM DISTANCE IN FEET ABOVE COUNTY BOUNDARY* *COUNTY BOUNDARY IS APPROXIMATELY 1,250 FEET DOWNSTREAM OF INTERSTATE 93 452P CONFLUENCE OF SUTTON BROOK BARRY DRIVE BRIDGE MILL STREET BRIDGE STRONG WATER BROOK CONFLUENCE OF BRIDGE STREET BRIDGE MAIN STREET BRIDGE STATE ROUTE 38 CONFLUENCE OF HEATH BROOK
FEDERAL EMERGENCY MANAGEMENT AGENCY ALL JURISDICTIONS SHAWSHEEN RIVER 105 105 100 100 95 95 90 90 85 85 80 80 75 Y 75 X W Z AA 70 S N O P Q R T U V 26000 27000 28000 29000 30000 31000 32000 33000 34000 35000 36000 37000 38000 39000 STREAM DISTANCE IN FEET ABOVE COUNTY BOUNDARY* *COUNTY BOUNDARY IS APPROXIMATELY 1,250 FEET DOWNSTREAM OF INTERSTATE 93 453P CONFLUENCE OF MUD POND BROOK CONFLUENCE OF CONTENT BROOK GEORGE BROWN STREET SALEM ROAD STATE ROUTE 129 RAILROAD 70
FEDERAL EMERGENCY MANAGEMENT AGENCY ALL JURISDICTIONS SHAWSHEEN RIVER 100 100 95 95 90 90 85 85 AG AE AF 80 80 AB AC AD 39000 40000 41000 42000 43000 44000 45000 46000 47000 48000 49000 50000 51000 52000 STREAM DISTANCE IN FEET ABOVE COUNTY BOUNDARY* *COUNTY BOUNDARY IS APPROXIMATELY 1,250 FEET DOWNSTREAM OF INTERSTATE 93 454P CONFLUENCE OF JONES BROOK CONFLUENCE OF WEBB BROOK STATE ROUTE 3A BOSTON ROAD
105 105 MIDDLESEX TURNPIKE SHAWSHEEN RIVER 100 100 95 95 90 90 85 85 80 AH AI AJ 52000 53000 54000 55000 56000 57000 58000 59000 60000 61000 62000 63000 64000 65000 STREAM DISTANCE IN FEET ABOVE COUNTY BOUNDARY* *COUNTY BOUNDARY IS APPROXIMATELY 1,250 FEET DOWNSTREAM OF INTERSTATE 93 AK FEDERAL EMERGENCY MANAGEMENT AGENCY ALL JURISDICTIONS 455P
FEDERAL EMERGENCY MANAGEMENT AGENCY ALL JURISDICTIONS SHAWSHEEN RIVER 115 115 110 110 105 105 100 100 95 95 AX BB AW AY AZ BA 90 90 85 AN AM AR AL AO AP AQ AS AT AU AV 65000 66000 67000 68000 69000 70000 71000 72000 73000 74000 75000 76000 77000 78000 STREAM DISTANCE IN FEET ABOVE COUNTY BOUNDARY* *COUNTY BOUNDARY IS APPROXIMATELY 1,250 FEET DOWNSTREAM OF INTERSTATE 93 456P US ROUTE 3 (NORTHBOUND) US ROUTE 3 (SOUTHBOUND) CONFLUENCE OF VINE BROOK BURLINGTON ROAD STATE ROUTE 62 CONFLUENCE OF SPRING BROOK PAGE ROAD CONFLUENCE OF ELM BROOK THE GREAT ROAD STATE ROUTE 4 BRIDGE STREET
FEDERAL EMERGENCY MANAGEMENT AGENCY ALL JURISDICTIONS SHAWSHEEN RIVER 130 130 125 125 120 120 115 115 110 110 105 105 100 BE BG BJ BL BC BD BF BH BI BK BM 78000 79000 80000 81000 82000 83000 84000 85000 86000 STREAM DISTANCE IN FEET ABOVE COUNTY BOUNDARY* *COUNTY BOUNDARY IS APPROXIMATELY 1,250 FEET DOWNSTREAM OF INTERSTATE 93 457P ABANDONED RAILROAD SUMMER STREET NORTH LEXINGTON BROOK CONFLUENCE OF HANSOOM AFB ACCESS ROAD LIMIT OF DETAILED STUDY
FEDERAL EMERGENCY MANAGEMENT AGENCY SKUG RIVER 90 90 80 80 70 70 E F 60 60 A B C D 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH MARTINS POND 458P CONFLUENCE WITH MARTINS POND MAIN STREET STATE ROUTE 28 CENTRAL STREET CULVERT
FEDERAL EMERGENCY MANAGEMENT AGENCY SKUG RIVER 90 90 80 80 70 70 6500 7000 7500 8000 8500 9000 9500 10000 10500 11000 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH MARTINS POND 459P COUNTY BOUNDARY G H I
FEDERAL EMERGENCY MANAGEMENT AGENCY SOUTH MEADOW BROOK - PAUL BROOK SOUTH MEADOW BROOK PAUL BROOK 115 115 110 110 CULVERT CULVERT 105 105 CULVERT CULVERT 100 100 F G 95 95 B C D E 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 7000 7500 8000 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH CHARLES RIVER 462P LIMITED OF DETAILED STUDY RAILROAD NEEDHAM STREET WINCHESTER STREET UPLAND AVENUE DEDHAM STREET MILDRED ROAD CULVERT A
FEDERAL EMERGENCY MANAGEMENT AGENCY SOUTH MEADOW BROOK - PAUL BROOK 125 125 120 120 115 115 CULVERTS CULVERT CULVERT 110 110 105 105 H I J 8000 8500 9000 9500 10000 10500 11000 11500 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH CHARLES RIVER 463P PARKER STREET GREAT MEADOW ROAD OLD FIELD ROAD HAYNES ROAD HAGEN ROAD LIMITED OF DETAILED STUDY CULVERT
FEDERAL EMERGENCY MANAGEMENT AGENCY SPRING BROOK 1% ANNUAL CHANCE BACKWATER FROM SHAWSHEEN RIVER 120 120 115 115 110 110 105 105 100 100 95 A B C D E F G 0 400 800 1200 1600 2000 2400 2800 3200 3600 4000 4400 4800 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH SHAWSHEEN RIVER 468P CONFLUENCE WITH SHAWSHEEN RIVER OLD BILLERICA ROAD STATE ROUTE 62 ABANDONED BRIDGE
130 130 ALCOTT STREET SPRING BROOK 125 125 120 120 CULVERT 115 115 110 110 H I J 4800 5200 5600 6000 6400 6800 7200 7600 8000 8400 8800 9200 9600 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH SHAWSHEEN RIVER K L FEDERAL EMERGENCY MANAGEMENT AGENCY 469P
FEDERAL EMERGENCY MANAGEMENT AGENCY SPRING BROOK 135 135 130 130 125 125 120 10000 10400 10800 11200 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH SHAWSHEEN RIVER 470P LIMIT OF DETAILED STUDY 120 M N O 9600
1% ANNUAL CHANCE BACKWATER FROM NASHUA RIVER CONFLUENCE WITH NASHUA RIVER 230 230 SQUANNACOOK RIVER 220 220 210 210 200 200 190 190 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000 STREAM DISTANCE IN FEET ABOVE CONFLUNCE WITH NASHUA RIVER A B FEDERAL EMERGENCY MANAGEMENT AGENCY 471P
FEDERAL EMERGENCY MANAGEMENT AGENCY SQUANNACOOK RIVER 260 260 250 250 240 240 230 230 220 220 210 210 G 200 200 C D E F 13000 14000 15000 16000 17000 18000 19000 20000 21000 22000 23000 24000 25000 26000 STREAM DISTANCE IN FEET ABOVE CONFLUNCE WITH NASHUA RIVER 472P DAM GROTON ROAD STATE ROUTE 225 DAM
FEDERAL EMERGENCY MANAGEMENT AGENCY SQUANNACOOK RIVER 270 270 260 260 250 250 240 240 230 230 26000 27000 28000 29000 30000 31000 32000 33000 34000 35000 36000 37000 38000 39000 STREAM DISTANCE IN FEET ABOVE CONFLUNCE WITH NASHUA RIVER 473P CONFLUENCE OF WITCH BROOK H I J K
HARBOR POND SOUTH STREET DAM 280 280 SQUANNACOOK RIVER 270 270 260 260 250 250 240 240 L M N O P 39000 40000 41000 42000 43000 44000 45000 46000 47000 48000 49000 50000 51000 52000 STREAM DISTANCE IN FEET ABOVE CONFLUNCE WITH NASHUA RIVER FEDERAL EMERGENCY MANAGEMENT AGENCY 474P
FEDERAL EMERGENCY MANAGEMENT AGENCY SQUANNACOOK RIVER 310 310 300 300 290 290 280 280 270 270 T 260 260 Q R S 52000 53000 54000 55000 56000 57000 58000 59000 60000 61000 62000 63000 64000 65000 STREAM DISTANCE IN FEET ABOVE CONFLUNCE WITH NASHUA RIVER 475P BRIDGE REMAINS ELM STREET STATE ROUTE 13 DAM RAILROAD MAIN STREET/STATE ROUTE 119 CONFLUENCE OF TRIBUTARY A TO SQUANNACOOK RIVER
FEDERAL EMERGENCY MANAGEMENT AGENCY SQUANNACOOK RIVER 310 310 300 300 290 290 280 280 W X 270 270 U V 65000 66000 67000 68000 69000 70000 71000 72000 73000 74000 75000 76000 77000 78000 STREAM DISTANCE IN FEET ABOVE CONFLUNCE WITH NASHUA RIVER 476P CONFLUENCE OF TRIBUTARY B TO SQUANNACOOK RIVER TURNPIKE ROAD
FEDERAL EMERGENCY MANAGEMENT AGENCY SQUANNACOOK RIVER 320 320 310 310 300 300 290 290 280 280 Y Z 78000 79000 80000 81000 82000 83000 STREAM DISTANCE IN FEET ABOVE CONFLUNCE WITH NASHUA RIVER 477P RAILROAD DAM CANAL STREET CONFLUENCE OF WALKER BROOK 2
FEDERAL EMERGENCY MANAGEMENT AGENCY STONY BROOK 1 1% ANNUAL CHANCE BACKWATER FROM CHARLES RIVER 50 50 45 45 40 40 35 35 30 30 25 25 0 200 400 600 800 1000 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH CHARLES RIVER 480P MOUTH AT CHARLES RIVER WEIR AT SOUTH STREET
FEDERAL EMERGENCY MANAGEMENT AGENCY STONY BROOK 1 75 75 70 70 65 65 60 60 55 55 50 50 45 45 40 40 35 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000 3200 3400 3600 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH CHARLES RIVER 481P STONY BROOK RESERVOIR DAM
FEDERAL EMERGENCY MANAGEMENT AGENCY STONY BROOK 1 75 75 70 70 65 65 60 60 55 55 50 50 3600 3800 4000 4200 4400 4600 4800 5000 5200 5400 5600 5800 6000 6200 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH CHARLES RIVER 482P STONY BROOK DAM
FEDERAL EMERGENCY MANAGEMENT AGENCY STONY BROOK 1 100 100 CULVERT 95 95 90 90 85 85 80 80 75 75 70 70 65 65 D 60 A B C 55 6200 6400 6600 6800 7000 7200 7400 7600 7800 8000 8200 8400 8600 8800 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH CHARLES RIVER 483P RAILROAD BOSTON POST ROAD US ROUTE 20
100 100 95 95 90 90 STONY BROOK 1 85 85 80 80 75 75 E F G 8800 9000 9200 9400 9600 9800 10000 10200 10400 10600 10800 11000 11200 11400 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH CHARLES RIVER RAILROAD H I RAILROAD FEDERAL EMERGENCY MANAGEMENT AGENCY 484P
FEDERAL EMERGENCY MANAGEMENT AGENCY STONY BROOK 1 100 100 95 95 90 90 85 85 80 80 11400 11600 11800 12000 12200 12400 12600 12800 13000 13200 13400 13600 13800 14000 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH CHARLES RIVER 485P CONFLUENCE OF HOBBS BROOK 1 DUMP ROAD CHURCH STREET Q J K L M N O P
STONY BROOK 1 105 105 100 100 95 95 90 90 R 14000 14200 14400 14600 14800 15000 15200 15400 15600 15800 16000 16200 16400 16600 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH CHARLES RIVER S FEDERAL EMERGENCY MANAGEMENT AGENCY 486P
FEDERAL EMERGENCY MANAGEMENT AGENCY STONY BROOK 1 115 115 110 110 105 105 100 100 95 90 16600 16800 17000 17200 17400 17600 17800 18000 18200 18400 18600 18800 19000 19200 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH CHARLES RIVER 487P VILES STREET CONFLUENCE OF CHERRY BROOK RAILROAD Z T U V W X Y
CONANT ROAD STONY BROOK 1 125 125 120 120 115 115 110 110 105 AA AB AC AD 100 19200 19400 19600 19800 20000 20200 20400 20600 20800 21000 21200 21400 21600 21800 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH CHARLES RIVER AE FEDERAL EMERGENCY MANAGEMENT AGENCY 488P
135 135 MERRIAM STREET STONY BROOK 1 130 130 125 125 120 120 115 115 110 AF AG AH AI 21800 22000 22200 22400 22600 22800 23000 23200 23400 23600 23800 24000 24200 24400 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH CHARLES RIVER AJ FEDERAL EMERGENCY MANAGEMENT AGENCY 489P
FEDERAL EMERGENCY MANAGEMENT AGENCY STONY BROOK 1 150 150 145 145 140 140 135 135 130 130 125 125 AK AL AM AN 24400 24600 24800 25000 25200 25400 25600 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH CHARLES RIVER 490P NORTH AVENUE STATE ROUTE 117 LIMIT OF DETAILED STUDY
LIMIT OF DETAILED STUDY TOWER ROAD 190 190 185 185 STONY BROOK 1 180 180 175 175 170 170 165 165 AO AP AQ 0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 STREAM DISTANCE IN FEET ABOVE LIMIT OF DETAILED STUDY* *LIMIT OF DETAILED STUDY IS APPROXIMATELY 960 FEET DOWNSTREAM OF TOWER ROAD FEDERAL EMERGENCY MANAGEMENT AGENCY 491P
FEDERAL EMERGENCY MANAGEMENT AGENCY STONY BROOK 1 220 220 215 215 210 210 205 205 200 200 195 195 AV AW 190 190 185 AR AS AT AU 2600 2800 3000 3200 3400 3600 3800 4000 4200 4400 4600 4800 5000 5200 STREAM DISTANCE IN FEET ABOVE LIMIT OF DETAILED STUDY* *LIMIT OF DETAILED STUDY IS APPROXIMATELY 960 FEET DOWNSTREAM OF TOWER ROAD 492P PIERCE HILL ROAD LINCOLN ROAD BALLFIELD ROAD PRIVATE DRIVE PRIVATE DRIVE
FEDERAL EMERGENCY MANAGEMENT AGENCY STONY BROOK 1 230 230 225 225 220 220 215 215 210 210 AX AY AZ BA 5200 5400 5600 5800 6000 6200 6400 6600 6800 7000 7200 7400 7600 STREAM DISTANCE IN FEET ABOVE LIMIT OF DETAILED STUDY* *LIMIT OF DETAILED STUDY IS APPROXIMATELY 960 FEET DOWNSTREAM OF TOWER ROAD 493P PRIVATE DRIVE DIRT ROAD WOODEN FOOTBRIDGE STONE CULVERT STONE CULVERT
FEDERAL EMERGENCY MANAGEMENT AGENCY STONY BROOK 1 240 240 235 235 230 230 225 225 BB BC BD 7600 7800 8000 8200 8400 STREAM DISTANCE IN FEET ABOVE LIMIT OF DETAILED STUDY* *LIMIT OF DETAILED STUDY IS APPROXIMATELY 960 FEET DOWNSTREAM OF TOWER ROAD 494P SANDY POND ROAD WIER LIMIT OF DETAILED STUDY
FEDERAL EMERGENCY MANAGEMENT AGENCY STONY BROOK 2 115 115 1% ANNUAL CHANCE BACKWATER FROM MERRIMACK RIVER 110 110 105 105 100 100 95 95 90 90 85 85 H 80 80 75 B A C D E F G 70 0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH MERRIMACK RIVER 495P CONFLUENCE OF MERRIMACK RIVER RAILROAD RAILROAD MIDDLESEX STREET PRINCETON STREET STATE ROUTE 3A RAILROAD
RAILROAD 110 110 STONY BROOK 2 105 105 100 100 CULVERT 95 95 90 90 I J 2600 2800 3000 3200 3400 3600 3800 4000 4200 4400 4600 4800 5000 5200 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH MERRIMACK RIVER K FEDERAL EMERGENCY MANAGEMENT AGENCY 496P
RAILROAD US ROUTE 3 115 115 STONY BROOK 2 110 110 CULVERT CULVERT 105 105 100 100 95 95 90 L M N O P Q 5200 5400 5600 5800 6000 6200 6400 6600 6800 7000 7200 7400 7600 7800 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH MERRIMACK RIVER FEDERAL EMERGENCY MANAGEMENT AGENCY 497P
FEDERAL EMERGENCY MANAGEMENT AGENCY STONY BROOK 2 110 110 CULVERT 105 105 100 100 95 95 R S 7800 8000 8200 8400 8600 8800 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH MERRIMACK RIVER 498P MEADOWBROOK ROAD LIMIT OF DETAILED STUDY
FEDERAL EMERGENCY MANAGEMENT AGENCY STONY BROOK 2 170 170 160 160 AE 150 150 AD AC 140 140 130 U X W AA T V Y Z AB 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000 STREAM DISTANCE IN FEET ABOVE LIMIT OF DETAILED STUDY* *LIMIT OF DETAILED STUDY IS APPROXIMATELY 2,750 FEET DOWNSTREAM OF BROOKSIDE ROAD 499P LIMIT OF DETAILED STUDY RAILROAD BROOKSIDE ROAD DAM STONY BROOK ROAD CONFLUENCE OF TADMUCK BROOK DAM DEPOT STREET PIPE SUPPORT
RAILROAD RIVER STREET STONY BROOK 2 180 180 170 170 160 160 150 150 AG AF AH 13000 14000 15000 16000 17000 18000 19000 20000 21000 22000 23000 24000 25000 26000 STREAM DISTANCE IN FEET ABOVE LIMIT OF DETAILED STUDY* *LIMIT OF DETAILED STUDY IS APPROXIMATELY 2,750 FEET DOWNSTREAM OF BROOKSIDE ROAD AI AJ FEDERAL EMERGENCY MANAGEMENT AGENCY 500P
FEDERAL EMERGENCY MANAGEMENT AGENCY STONY BROOK 2 220 220 210 210 200 200 190 190 180 180 170 170 160 AM AP AO AR AT AW AY BA AZ BB AK AL AN AQ AS AU AV AX 150 26000 27000 28000 29000 30000 31000 32000 33000 34000 35000 36000 STREAM DISTANCE IN FEET ABOVE LIMIT OF DETAILED STUDY* *LIMIT OF DETAILED STUDY IS APPROXIMATELY 2,750 FEET DOWNSTREAM OF BROOKSIDE ROAD 501P BROADWAY STREET DAM CONFLUENCE OF BOUTWELL BROOK RAILROAD BRIDGE STREET MILOT ROAD TOWN FARM ROAD BUILDING BUILDING BUILDING PLEASANT STREET/STATE ROUTE 225 MURRAY PRINTING COMPANY DAM CONFLUENCE OF FORGE POND
FEDERAL EMERGENCY MANAGEMENT AGENCY STRONG WATER BROOK 90 90 85 85 CULVERT 80 80 75 75 D E 70 70 A B C 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH SHAWSHEEN RIVER 502P CONFLUENCE WITH SHAWSHEEN RIVER SHAWSHEEN STREET BRIDGE TEW-MAC AIRPORT RUNWAY
FEDERAL EMERGENCY MANAGEMENT AGENCY STRONG WATER BROOK 105 105 100 100 95 95 90 90 85 85 80 80 75 6500 7000 7500 8000 8500 9000 9500 10000 10500 11000 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH SHAWSHEEN RIVER 503P SEWER TREATMENT PLANT ROAD ABANDONED ROAD EAST STREET CART BRIDGE CONFLUENCE OF MEADOW BROOK AND MARSHALL BROOK F G H I J K
FEDERAL EMERGENCY MANAGEMENT AGENCY SUTTON BROOK 1% ANNUAL CHANCE BACKWATER FROM SHAWSHEEN RIVER 85 85 80 80 75 75 70 70 65 65 60 60 C A B 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH SHAWSHEEN RIVER 514P SHAWSHEEN RIVER CONFLUENCE WITH ABANDONED RAILROAD BRIDGE SOUTH STREET CONFLUENCE WITH COLLINS BROOK
FEDERAL EMERGENCY MANAGEMENT AGENCY SUTTON BROOK 85 85 80 80 75 75 5500 6000 6500 7000 7500 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH SHAWSHEEN RIVER 515P LIMIT OF DETAILED STUDY D E
FEDERAL EMERGENCY MANAGEMENT AGENCY SWEETWATER BROOK CULVERT 80 80 70 70 60 60 50 50 CULVERT CULVERT M 40 40 30 E D A B C F G H I J K L 20 0 400 800 1200 1600 2000 2400 2800 3200 3600 4000 4400 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH ABERJONA RIVER 516P CONFLUENCE WITH ABERJONA RIVER TWIN CULVERTS TWIN CULVERTS KRAFT FOODS FOOTBRIDGE KRAFT FOODS ACCESS ROAD WEIR INTERSTATE 93 MAPLE STREET ACCESS ROAD FOOTBRIDGE MONTVALE AVENUE CEMETERY CROSSING 1 CEMETERY CROSSING 2 LINDENWOOD ROAD LIMIT OF DETAILED STUDY CULVERT CULVERT CULVERT CULVERT CULVERT
1% ANNUAL CHANCE BACKWATER FROM STONY BROOK 2 CONFLUENCE WITH STONY BROOK 2 ACCESS ROAD LOWELL ROAD 200 200 ACCESS ROAD MAIN STREET TADMUCK BROOK 190 190 THE PROFILE IS TOO CLOSE TO THE 180 ELEVATION TO BE SHOWN SEPARATELY 180 170 170 160 160 150 A B C D E 140 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH STONY BROOK 2 F G H I FEDERAL EMERGENCY MANAGEMENT AGENCY 517P
FEDERAL EMERGENCY MANAGEMENT AGENCY TADMUCK BROOK 230 230 220 220 210 210 200 200 190 N M Q S J K L O P R 6500 7000 7500 8000 8500 9000 9500 10000 10500 11000 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH STONY BROOK 2 518P TADMUCK LANE FOOTBRIDGE DANA DRIVE FAIRVIEW DRIVE TADMUCK ROAD PROVIDENCE ROAD LIMIT OF DETAILED STUDY THE PROFILE IS TOO CLOSE TO THE ELEVATION TO BE SHOWN SEPARATELY