+ All Categories
Home > Documents > LEGEND - granit.unh.edu · For areas of alluvial fan flooding,velocities also determined. ZONE AR...

LEGEND - granit.unh.edu · For areas of alluvial fan flooding,velocities also determined. ZONE AR...

Date post: 19-Sep-2019
Category:
Upload: others
View: 2 times
Download: 0 times
Share this document with a friend
1
HIGHLAND AVENUE HIGHLAND AVENUE F E R RY ST F E R RY ST ZONE X ZONE X WY ET H S T WY ET H S T G G WASHING TO N ST WASHING TO N ST ME LEN D Y R D ME LEN D Y R D LI B R A R Y ST LI B R A R Y ST B O N D S T B O N D S T BLACKSTONE ST BLACKSTONE ST MERRILL ST MERRILL ST SCOTTSDALE SCOTTSDALE DRIVE DRIVE C E DAR ST C E DAR ST SHERATON DRIVE SHERATON DRIVE RHON A S T RHON A S T S HO R T S T S HO R T S T N N K K 113 113 PELHAM ROAD PELHAM ROAD CO U N T Y R D CO U N T Y R D ZONE A ZONE A Glover Glover Brook Brook TESS I ER S T TESS I ER S T 3A 3A MADISON DRIVE MADISON DRIVE L O W E L L R D L O W E L L R D 118 118 ZONE X ZONE X Merrill Brook Merrill Brook G ULF ST G ULF ST ZONE X ZONE X F F G I L L I S S T G I L L I S S T TR A VE R S ST TR A VE R S ST R E G I N A S T R E G I N A S T C ENT RAL S T C ENT RAL S T ZONE X ZONE X ZONE X ZONE X G RE E LE Y S T G RE E LE Y S T ZONE A ZONE A S T A N L E Y A V S T A N L E Y A V F S T F S T ZONE A ZONE A A L P H A S T A L P H A S T FER R Y S T FER R Y S T HEML OCK S T HEML OCK S T TATE ST TATE ST L A M P R ON S T L A M P R ON S T ZONE X ZONE X E E AN DREWS A V AN DREWS A V M M GLORIA ST GLORIA ST A D E L A D E S T A D E L A D E S T LOWELL RD LOWELL RD 132 132 A TWO O D A V A TWO O D A V H U R L E Y S T H U R L E Y S T OAK AV OAK AV F E R RY ST F E R RY ST BELKNAP R D BELKNAP R D M EL E ND Y R D M EL E ND Y R D HAMBLETT AVENUE HAMBLETT AVENUE SUNRISE DRIVE SUNRISE DRIVE ZONE X ZONE X B U R T O N S T B U R T O N S T WENDE DR WENDE DR FOX RUN ROAD FOX RUN ROAD D AN IE L W E B S T E R D R D AN IE L W E B S T E R D R MARSHMALLOW MARSHMALLOW PATH PATH C O NN E L L S T C O NN E L L S T K K RI C K Y D R RI C K Y D R WATER ST WATER ST 166 166 ZONE X ZONE X S P RUC E S T S P RUC E S T WI N DHAM RD WI N DHAM RD CH ATHA M S T CH ATHA M S T S Y C A M ORE S T S Y C A M ORE S T A ST A ST CLIF F A V CLIF F A V Second Brook Second Brook ZONE X ZONE X LEDGE RD LEDGE RD ALPINE A V ALPINE A V ZONE X ZONE X PELHAM ROAD PELHAM ROAD CLAVEAU LANDING CLAVEAU LANDING 115 115 JOSEPH JOSEPH AVENUE AVENUE LINDEN ST LINDEN ST 112 112 TEMPLE ST TEMPLE ST J J F F TEMPLE ST TEMPLE ST G R E E LE Y S T G R E E LE Y S T SUN FLO W E R S T SUN FLO W E R S T TESS I ER S T TESS I ER S T 167 167 ZONE A ZONE A NOEL ST NOEL ST LINDEN ST LINDEN ST WINDHAM ROAD WINDHAM ROAD T H O R NI NG S T T H O R NI NG S T ZONE X ZONE X WY ET H S T WY ET H S T CLARK ST CLARK ST D ST D ST ZONE AE ZONE AE P O W E R ST P O W E R ST GLOVER LN GLOVER LN 121 121 MAEWOOD ST MAEWOOD ST G G HIGHLAND AVENUE HIGHLAND AVENUE M EL E ND Y R D M EL E ND Y R D 149 149 CAPE DR CAPE DR Merrill Brook Merrill Brook ZONE X ZONE X BIRCH ST BIRCH ST G R EELE Y S T G R EELE Y S T C E N TRA L ST C E N TRA L ST E ST E ST B E L K N A P T ER B E L K N A P T ER R I D G E A V R I D G E A V F I R ST F I R ST B E L K N A P T ER B E L K N A P T ER RHON A S T RHON A S T ME L E N D Y R D ME L E N D Y R D JACKSON DR JACKSON DR 150 150 LIMIT OF DETAILED STUDY LIMIT OF DETAILED STUDY G ULF ST G ULF ST YOUNG'S DR YOUNG'S DR Second Brook Second Brook KRYSTAL DRIVE KRYSTAL DRIVE ZONE A ZONE A L L MARSHALL ST MARSHALL ST LIMIT OF FLOODWAY LIMIT OF FLOODWAY 138 138 M E MOR IAL DR M E MOR IAL DR B E L K N A P R D B E L K N A P R D L O W E L L R D L O W E L L R D D D 153 153 ZONE X ZONE X ZONE AE ZONE AE ZONE X ZONE X B E L K N A P R D B E L K N A P R D ZONE X ZONE X MAGNOLIA MAGNOLIA STREET STREET WAYNE STREET WAYNE STREET E D G A R CT E D G A R CT BARRETTS HILL BARRETTS HILL ROAD ROAD I I First Brook First Brook C E N TR A L ST C E N TR A L ST BIRCH ST BIRCH ST NOTTINGHA M S T NOTTINGHA M S T 113 113 E E 154 154 H H SCHOOL ST SCHOOL ST SECOND ST SECOND ST K I M BA L L H ILL RD K I M BA L L H ILL RD BIRCH STREET BIRCH STREET H H I I PORTER AV PORTER AV 169 169 RI VERSIDE S T RI VERSIDE S T C L IFTO N ST C L IFTO N ST ZONE A ZONE A Town Town of Hudson of Hudson 330092 330092 R OOSEVELT AV R OOSEVELT AV B U R NHAM R D B U R NHAM R D 148 148 V I N TO N S T V I N TO N S T ZONE X ZONE X B E LKN AP RD B E LKN AP RD THIRD ST THIRD ST IRIS LN IRIS LN C S T C S T 124 124 L O W E L L R D L O W E L L R D M E L E N D Y R D M E L E N D Y R D C E DAR ST C E DAR ST B ONNI E LN B ONNI E LN B S T B S T CHARBONNEAU DRIVE CHARBONNEAU DRIVE CANNA ST CANNA ST B ST B ST 151 151 M A D I S O N DR M A D I S O N DR FIRST ST FIRST ST BELKNAP R D BELKNAP R D ZONE X ZONE X ZONE X ZONE X ZONE A ZONE A CO U N T Y R D CO U N T Y R D WATERLILY WATERLILY PATH PATH H I G H L A N D AV H I G H L A N D AV RAYM ON D S T RAYM ON D S T SAVIN ST SAVIN ST G E O R G E S T G E O R G E S T LORRAINE STREET LORRAINE STREET D D ZONE ZONE AE AE WATTS CIR WATTS CIR ZONE X ZONE X ZONE X ZONE X STATE ST STATE ST N EV EN S S T N EV EN S S T C C WINNHAVEN DRIVE WINNHAVEN DRIVE 148 148 HIG HL AND AV HIG HL AND AV M M FALCON FALCON DRIVE DRIVE 127 127 C O L L S T C O L L S T BUSWELL ST BUSWELL ST G O RDON ST G O RDON ST FRENETTS DR FRENETTS DR C H A R L E S S T C H A R L E S S T ZONE ZONE AE AE O A KW O O D S T O A KW O O D S T CROSS STREET CROSS STREET J J TATE ST TATE ST Merrill Brook Merrill Brook ELK RUN ELK RUN ROAD ROAD LYONS S T LYONS S T S P RUC E S T S P RUC E S T WI N N S T WI N N S T 152 152 HEML OCK S T HEML OCK S T PINEDALE AV PINEDALE AV 168 168 TATE ST TATE ST 137 137 B ST B ST Glover Brook Glover Brook First Brook First Brook ZONE X ZONE X S Y C A M ORE S T S Y C A M ORE S T 112 112 ROBIN ROBIN DRIVE DRIVE A TWO O D A V A TWO O D A V LAKESIDE LAKESIDE G R E E N T R E E D R G R E E N T R E E D R F I R ST F I R ST 95000 FT 100000 FT 1050000 FT 3 01 000m E 3 02 000m E 3 03 000m E 47 36 000m N 47 37 000m N 47 38 000m N 47 39 000m N 71°26'15.00" 42°46'52.50" 71°26'15.00" 42°45'00.00" 71°24'22.50" 42°45'00.00" 71°24'22.50" 42°46'52.50" JOINS PANEL 0656 JOINS PANEL 0514 JOINS PANEL 0516 JOINS PANEL 0519 ZONE A ZONE AE ZONE AH ZONE AO ZONE AR ZONE A99 ZONE V ZONE VE ZONE X ZONE X ZONE D ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 513 (EL 987) A A --------- 23 23 97°07'30", 32°22'30" 42 75 000m N 6000000 FT DX5510 M1.5 MAP REPOSITORIES To determine if flood insurance is available in this community, contact your insurance agent or call the National Flood Insurance Program at 1- 800- 638- 6620. Refer to Map Repositories list on Map Index EFFECTIVE DATE OF COUNTYWIDE FLOOD INSURANCE RATE MAP September 25, 2009 EFFECTIVE DATE(S) OF REVISION(S) TO THIS PANEL MAP SCALE 1" = 500' PANEL 0518D Notice to User: The shown below should be used when placing map orders; the Community Number shown above should be used on insurance applications for the subject community. Map Number CONTAINS: COMMUNITY NUMBER PANEL SUFFIX Federal Emergency Management Agency HILLSBOROUGH COUNTY, NEW HAMPSHIRE (ALL JURISDICTIONS) HUDSON, TOWN OF 330092 0518 D (SEE MAP INDEX FOR FIRM PANEL LAYOUT) This map is for use in administering the National Flood Insurance Program. It does not necessarily identify all areas subject to flooding, particularly fromlocal community map repository drainage sources of small size. The shouldbe consulted for possible updated or additional flood hazard information. Base Flood Elevations To obtain more detailed information in areas where floodways (BFEs) and/or have been determined, users are encouraged to consult the Flood Profiles and Floodway Data and/or Summary of Stillwater Elevations tables contained within the Flood Insurance Study (FIS) report that accompanies this FIRM. Users should be aware that BFEs shown on the FIRM represent rounded whole- foot elevations. These BFEs are intended for flood insurance rating purposes only and should not be used as the sole source of flood elevation information. Accordingly, flood elevation data presented in the FIS report should be utilized in conjunction with the FIRM for purposesof construction and/or floodplain management. Coastal Base Flood Elevations shown on this map apply only landward North American Vertical Datum of 1988 (NAVD 88). of 0.0' Users of this FIRM should be aware that coastal flood elevations are also provided in the Summary of Stillwater Elevations table in the Flood Insurance Study report for this jurisdiction. Elevations shown in the Summary of Stillwater Elevations table should be used for construction and/or floodplain management purposes when they are higher than the elevations shown on this FIRM. floodways Boundaries of the were computed at cross sections and interpolated between cross sections. The floodways were based on hydraulic considerations with regard to requirements of the National Flood Insurance Program. Floodway widths and other pertinent floodway data are provided in the Flood Insurance Study report for this jurisdiction. Certain areas not in Special Flood Hazard Areas may be protected by flood control structures. Refer to Section 2.4 "Flood Protection Measures" of the Flood Insurance Study report for information on flood control structures for this jurisdiction. projection The used in the preparation of this map was New Hampshire State horizontal datum Plane (FIPSZONE 2800). The was NAD83, GRS1980 spheroid. Differences in datum, spheroid, projection or State Plane zones used in the production of FIRMs for adjacent jurisdictions may result in slight positional differences in map features across jurisdiction boundaries. These differences do not affect the accuracy of the FIRM. Flood elevations on this map are referenced to the North American Vertical Datum of 1988. These flood elevations must be compared to structure and vertical datum. ground elevations referenced to the same For information regarding conversion between the National Geodetic Vertical Datum of 1929 and the North American Vertical Datum of 1988, visit the National Geodetic http://www.ngs.noaa.gov/ Survey website at or contact the National Geodetic Survey at the following address: NGS Information Services NOAA, N/NGS12 National Geodetic Survey SSMC- 3, #9202 1315 East- West Highway Silver Spring, MD 20910- 3282 To obtain current elevation, description, and/or location information for bench marks shown on this map, please contact the Information Services Branch of the (301) 713- 3242, National Geodetic Survey at or visit its website at http://www.ngs.noaa.gov/. Base map information shown on this FIRM was derived from U.S. Geological Survey Digital Orthophoto Quadrangles produced at a scale of 1:12,000 from photography dated 1998 or later. These images were recast by NH GRANIT onto the NH State Plane coordinate system. This map reflects more detailed and up- to- date stream channel configurations than those shown on the previous FIRM for this jurisdiction. The floodplains and floodways that were transferred from the previous FIRM may have been adjusted to conform to these new stream channel configurations. As a result, the Flood Profiles and Floodway Data tables in the Flood Insurance Study report (which contains authoritative hydraulic data ) may reflect stream channel distances that differ from what is shown on this map. Corporate limits shown on this map are based on the best data available at the time of publication. Because changes due to annexations or de- annexations may have occurred after this map was published, map users should contact appropriate community officials to verify current corporate limit locations. Map Index Please refer to the separately printed for an overview map of the county showing the layout of map panels; community map repository addresses; and a Listing of Communities table containing National Flood Insurance Program dates for each community as well as a listing of the panels on which each community is located. Contact the FEMA Map Service Center at 1- 800- 358- 9616 for information on available products associated with this FIRM. Available products may include previously issued Letters of Map Change, a Flood Insurance Study report, and/or digital versions of this map. The FEMA Map Service Center may also be reached by Fax at 1- 800- 358- 9620 and its website at http://www.msc.fema.gov/. If you have questions about this map or questions concerning the National Flood Insurance Program in general, please call1- 877- FEMA MAP (1- 877- 336- 2627) or visit the FEMA website at http://www.fema.gov/.
Transcript
Page 1: LEGEND - granit.unh.edu · For areas of alluvial fan flooding,velocities also determined. ZONE AR Special Flood Hazard Area formerly protected from the 1%annual chance flood by a

HIG

HLA

ND

AV

EN

UE

HIG

HLA

ND

AV

EN

UE

FERRY ST

FERRY ST

ZONE XZONE X

WYETH ST

WYETH ST

GG

WASHINGTON ST

WASHINGTON ST

MELENDY RDMELENDY RD

LIBRA

RY ST

LIBRA

RY ST

BOND ST

BOND ST

BLA

CK

STO

NE

ST

BLA

CK

STO

NE

ST

ME

RR

ILL

ST

ME

RR

ILL

ST

SCOTTSDALE SCOTTSDALEDRIVE DRIVE

CEDAR ST

CEDAR ST

SHERATON DRIVE

SHERATON DRIVE

RHONA ST

RHONA ST

SHORT STSHORT ST

NN

KK

113

113

PELHAM ROAD PELHAM ROAD

COUNTY RD

COUNTY RD

ZONE AZONE A

GloverGloverBrookBrook

TESSIER ST

TESSIER ST

3A3A

MADIS

ON DRIV

E

MADIS

ON DRIV

E

LO

WE

LL

RD

LO

WE

LL

RD

118118

ZONE XZONE X

Merrill BrookMerrill Brook

GULF ST

GULF ST

ZONE XZONE X

FF

GIL

LIS

ST

GIL

LIS

ST

TRAVERS ST

TRAVERS ST

RE

GIN

A ST

RE

GIN

A ST

CENTRAL ST

CENTRAL ST

ZONE XZONE X

ZONE XZONE X

GREELEY ST

GREELEY ST

ZONE AZONE A

STAN

LEY A

V

STAN

LEY A

V

F ST

F ST

ZONE AZONE A

ALPHA STALPHA ST

FERRY STFERRY ST

HEMLOCK ST

HEMLOCK ST TATE S

T

TATE ST

LAM

PR

ON

ST

LAM

PR

ON

ST

ZONE XZONE X

EE

ANDREWS AV

ANDREWS AV

MM

GLO

RIA

ST

GLO

RIA

ST

AD

ELA

DE

ST

AD

ELA

DE

ST

LOW

ELL R

D

LOW

ELL R

D

132132

ATWOOD A

V

ATWOOD A

V

HU

RL

EY

ST

HU

RL

EY

ST

OA

K A

V

OA

K A

V

FERRY STFERRY ST

BELKNAP RD

BELKNAP RD

MELENDY R

D

MELENDY R

D

HAMBLETTAVENUE

HAMBLETTAVENUE

SUNRIS

E DRIV

E

SUNRIS

E DRIV

E

ZONE XZONE X

BURTON ST

BURTON ST

WENDE DR

WENDE DR

FOX RUN ROAD FOX RUN ROAD

DANIEL WEBSTER D

R

DANIEL WEBSTER D

R

MARSHMALLOW MARSHMALLOWPATH PATH

CONNELL ST

CONNELL ST

KK

RICKY DRRICKY DR

WATER ST

WATER ST

166166

ZONE XZONE X

SPRUCE ST

SPRUCE ST

WIN

DHAM RD

WIN

DHAM RD

CHATHAM ST

CHATHAM ST

SYCAMORE ST

SYCAMORE ST

A STA ST

CLIFF AVCLIFF AV

Second BrookSecond Brook

ZONE XZONE X

LEDGE RD

LEDGE RD

ALPINE AVALPINE AV

ZONE XZONE X

PELHAM ROAD

PELHAM ROAD

CL

AV

EA

U L

AN

DIN

G

CL

AV

EA

U L

AN

DIN

G

115115

JOSEPH JOSEPHAVENUE AVENUE

LINDEN S

T

LINDEN S

T

112112

TEMPLE ST

TEMPLE ST

JJ

FF

TEMPLE ST

TEMPLE ST

GR

EE

LEY

ST

GR

EE

LEY

ST

SU

NFLO

WE

R S

T

SU

NFLO

WE

R S

T

TESSIER ST

TESSIER ST

167167

ZONE AZONE A

NOEL ST

NOEL ST

LINDEN S

T

LINDEN S

T

WINDHAM ROAD WINDHAM ROAD

THORNING STTHORNING ST

ZONE XZONE X

WYETH ST

WYETH ST

CLARK ST

CLARK ST

D S

TD

ST

ZONE AEZONE AE

POWER STPOWER ST

GLOVER LN

GLOVER LN

121121

MAEWOOD ST

MAEWOOD ST

GG

HIGHLAND AVENUE

HIGHLAND AVENUE

MELENDY R

D

MELENDY R

D

149149

CAPE DRCAPE DR

Merrill BrookMerrill Brook

ZONE XZONE X

BIRCH ST

BIRCH ST

GREELEY ST

GREELEY ST

CENTRAL STCENTRAL ST

E ST

E ST

BE

LK

NA

P TER

BE

LK

NA

P TER

RIDGE AV

RIDGE AV

FIR ST

FIR ST

BE

LK

NA

P TER

BE

LK

NA

P TER

RHONA ST

RHONA ST

MELENDY RDMELENDY RD

JAC

KS

ON

DR

JAC

KS

ON

DR

150

150

LIMIT OF DETAILED STUDY

LIMIT OF DETAILED STUDY

GULF ST

GULF ST

YOUNG'S DRYOUNG'S DR

Second BrookSecond Brook

KRYSTAL DRIVE KRYSTAL DRIVE

ZONE AZONE A

LL

MARSHALL S

T

MARSHALL S

T

LIMIT OF FLOODWAYLIMIT OF FLOODWAY

138138

MEMORIAL DR

MEMORIAL DR

BE

LKN

AP

RD

BE

LKN

AP

RD

LO

WELL RD

LO

WELL RD

DD

153153

ZONE XZONE X

ZONE AEZONE AE

ZONE XZONE X

BE

LK

NA

P R

DB

EL

KN

AP

RD

ZONE XZONE X

MAGNOLIA MAGNOLIASTREET STREET

WAYNE S

TREET

WAYNE S

TREET

ED

GA

R C

T

ED

GA

R C

T

BARRETTS HILL BARRETTS HILLROAD ROAD

II

First BrookFirst Brook

CENTRAL ST

CENTRAL ST

BIRCH ST

BIRCH ST

NOTTINGHAM ST

NOTTINGHAM ST

113113

EE

154154

HH

SCHOOL ST

SCHOOL ST

SECOND ST

SECOND ST

KI MBALL HILL RD

KI MBALL HILL RD

BIRCHSTREET BIRCH

STREET

HH

II

POR

TER A

V

POR

TER A

V

169169

RIVERSIDE ST

RIVERSIDE ST

CLIFTON ST

CLIFTON ST

ZONE AZONE A

TownTownof Hudsonof Hudson

330092330092

ROOSEVELT AV

ROOSEVELT AV

BURNHAM RD

BURNHAM RD

148148

VINTON ST

VINTON ST

ZONE XZONE X

BELKNAP RD

BELKNAP RD

THIRD ST

THIRD ST

IRIS LNIRIS LN

C S

TC

ST

124124

LO

WELL RD

LO

WELL RD

ME

LE

ND

Y R

DM

EL

EN

DY

RD

CEDAR ST

CEDAR ST

BONNIE LNBONNIE LN

B STB ST

CH

AR

BO

NN

EA

U D

RIV

E

CH

AR

BO

NN

EA

U D

RIV

E

CA

NN

A S

TC

AN

NA

ST

B STB ST

151151

MADISON DR

MADISON DR

FIRST ST

FIRST ST

BELKNAP RD

BELKNAP RD

ZONE XZONE X

ZONE XZONE X

ZONE AZONE A

COUNTY RD

COUNTY RD

WATERLILY WATERLILYPATH PATH

HIGHLAND AV

HIGHLAND AV

RAYMOND STRAYMOND ST

SAVIN ST

SAVIN ST

GE

OR

GE

ST

GE

OR

GE

ST

LORRAINE STREET

LORRAINE STREET

DD

ZONEZONEAEAE

WATT

S CIR

WATT

S CIR

ZONE XZONE X

ZONE XZONE X

ST

AT

E S

TS

TA

TE

ST

NEVENS ST

NEVENS ST

CC

WIN

NHAVEN DRIV

E

WIN

NHAVEN DRIV

E

148148

HIGHLAND A

V

HIGHLAND A

V

MM

FALCON FALCONDRIVE DRIVE

127127

CO

LL

ST

CO

LL

ST

BU

SWE

LL ST

BU

SWE

LL ST

GORDON STGORDON ST

FRENETTS DR

FRENETTS DR

CH

AR

LES ST

CH

AR

LES ST

ZONEZONEAEAE

OAKWOOD ST

OAKWOOD ST

CR

OS

S S

TRE

ET

CR

OS

S S

TRE

ET

JJ

TATE ST

TATE ST

Merrill BrookMerrill Brook

ELK RUN ELK RUNROAD ROAD

LYONS STLYONS ST

SPRUCE ST

SPRUCE ST

WIN

N ST

WIN

N ST

152152

HEMLOCK ST

HEMLOCK ST

PIN

ED

ALE

AV

PIN

ED

ALE

AV

168

168

TATE ST

TATE ST

137137

B STB ST

Glover BrookGlover Brook

First BrookFirst Brook

ZONE XZONE X

SYCAMORE ST

SYCAMORE ST

112112

ROBIN ROBINDRIVE DRIVE

ATWOOD A

V

ATWOOD A

V

LAKESID

E

LAKESID

E

GR

EE

NTR

EE

DR

GR

EE

NTR

EE

DR

FIR ST

FIR ST

95000 FT

100000 FT

1050000 FT

301

000m E

302

000m E

303

000m E

4736

000m N

4737

000m N

4738

000m N

4739

000m N

71°26'15.00"

42°46'52.50"

71°26'15.00"

42°45'00.00"71°24'22.50"

42°45'00.00"

71°24'22.50"

42°46'52.50"

JOINS PANEL 0656

JOIN

S P

AN

EL

0514

JOINS PANEL 0516

JOIN

S P

AN

EL

0519

1% annual chance floodplain boundary0.2% annual chance floodplain boundaryFloodway boundaryZone D boundary

LEGENDSPECIAL FLOOD HAZARD AREAS (SFHAs) SUBJECT TOINUNDATION BY THE 1% ANNUAL CHANCE FLOOD

The 1% annual chance flood (100-year flood), also known as the base flood, is the floodthat has a 1% chance of being equaled or exceeded in any given year. The SpecialFlood Hazard Area is the area subject to flooding by the 1% annual chance flood. Areasof Special Flood Hazard include Zones A, AE, AH, AO, AR, A99, V and VE. The BaseFlood Elevation is the water-surface elevation of the 1% annual chance flood.

ZONE A No Base Flood Elevations determined.

ZONE AE Base Flood Elevations determined.

ZONE AH Flood depths of 1 to 3 feet (usually areas of ponding); Base FloodElevations determined.

ZONE AO Flood depths of 1 to 3 feet (usually sheet flow on sloping terrain);average depths determined. For areas of alluvial fan flooding, velocitiesalso determined.

ZONE AR Special Flood Hazard Area formerly protected from the 1% annualchance flood by a flood control system that was subsequentlydecertified. Zone AR indicates that the former flood control system isbeing restored to provide protection from the 1% annual chance orgreater flood.

ZONE A99 Area to be protected from 1% annual chance flood by a Federalflood protection system under construction; no Base Flood Elevationsdetermined.

ZONE V Coastal flood zone with velocity hazard (wave action); no Base FloodElevations determined.

ZONE VE Coastal flood zone with velocity hazard (wave action); Base FloodElevations determined.

FLOODWAY AREAS IN ZONE AE

The floodway is the channel of a stream plus any adjacent floodplain areas that must bekept free of encroachment so that the 1% annual chance flood can be carried withoutsubstantial increases in flood heights.

OTHER FLOOD AREAS

ZONE X Areas of 0.2% annual chance flood; areas of 1% annual chance floodwith average depths of less than 1 foot or with drainage areas less than1 square mile; and areas protected by levees from 1% annual chanceflood.

OTHER AREAS

ZONE X Areas determined to be outside the 0.2% annual chance floodplain.

ZONE D Areas in which flood hazards are undetermined, but possible.

COASTAL BARRIER RESOURCES SYSTEM (CBRS) AREAS

OTHERWISE PROTECTED AREAS (OPAs)

CBRS areas and OPAs are normally located within or adjacent to Special Flood Hazard Areas.

CBRS and OPA boundary

Boundary dividing Special Flood Hazard Areas of differentBase Flood Elevations, flood depths or flood velocities.

Base Flood Elevation line and value; elevation in feet*~ ~~ ~~ ~~ ~~ ~513

(EL 987) Base Flood Elevation value where uniform within zone;elevation in feet*

* Referenced to the North American Vertical Datum of 1988 (NAVD 88)

A A Cross section line

- - - - - - - - - Transect line23 23

97°07'30", 32°22'30"Geographic coordinates referenced to the North AmericanDatum of 1983 (NAD 83)

4275000mN 1000-meter Universal Transverse Mercator grid ticks, zone 19

6000000 FT 5000-foot grid values: New Hampshire State Plane coordinatesystem, (FIPSZONE 2800), Transverse Mercator

DX5510 Bench mark (see explanation in Notes to Users section ofthis FIRM panel)

M1.5 River Mile

MAP REPOSITORIES

To determine if flood insurance is available in this community, contact your insuranceagent or call the National Flood Insurance Program at 1- 800- 638- 6620.

Refer to Map Repositories list on Map Index

EFFECTIVE DATE OF COUNTYWIDEFLOOD INSURANCE RATE MAP

September 25, 2009EFFECTIVE DATE(S) OF REVISION(S) TO THIS PANEL

For community map revision history prior to countywide mapping, refer to the CommunityMap History table located in the Flood Insurance Study report for this jurisdiction.

MAP SCALE 1" = 500'250 0 500 1000

FEET

150 0 150 300METERS

PANEL 0518D

NATI

ONAL

FLO

OD IN

SURA

NCE

PROG

RAM

NFIPFIRMFLOOD INSURANCE RATE MAP

Notice to User: The shown below should beused when placing map orders; the Community Number shownabove should be used on insurance applications for the subjectcommunity.

Map Number

CONTAINS:

COMMUNITY NUMBER PANEL SUFFIX

MAP NUMBER33011C0518D

EFFECTIVE DATESEPTEMBER 25, 2009

Federal Emergency Management Agency

HILLSBOROUGH COUNTY,

NEW HAMPSHIRE(ALL JURISDICTIONS)

HUDSON, TOWN OF 330092 0518 D

PANEL 518 OF 701(SEE MAP INDEX FOR FIRM PANEL LAYOUT)

NOTES TO USERSThis map is for use in administering the National Flood Insurance Program. Itdoes not necessarily identify all areas subject to flooding, particularly fromlocal

community map repositorydrainage sources of small size. The shouldbeconsulted for possible updated or additional flood hazard information.

Base Flood ElevationsTo obtain more detailed information in areas where floodways(BFEs) and/or have been determined, users are encouraged to consult

the Flood Profiles and Floodway Data and/or Summary of Stillwater Elevationstables contained within the Flood Insurance Study (FIS) report that accompaniesthis FIRM. Users should be aware that BFEs shown on the FIRM representrounded whole- foot elevations. These BFEs are intended for flood insurancerating purposes only and should not be used as the sole source of floodelevation information. Accordingly, flood elevation data presented in the FISreport should be utilized in conjunction with the FIRM for purposes ofconstruction and/or floodplain management.

Coastal Base Flood Elevations shown on this map apply only landwardNorth American Vertical Datum of 1988 (NAVD 88).of 0.0' Users of this

FIRM should be aware that coastal flood elevations are also provided in theSummary of Stillwater Elevations table in the Flood Insurance Study reportfor this jurisdiction. Elevations shown in the Summary of Stillwater Elevationstable should be used for construction and/or floodplain management purposeswhen they are higher than the elevations shown on this FIRM.

floodwaysBoundaries of the were computed at cross sections and interpolatedbetween cross sections. The floodways were based on hydraulic considerationswith regard to requirements of the National Flood Insurance Program. Floodwaywidths and other pertinent floodway data are provided in the Flood InsuranceStudy report for this jurisdiction.

Certain areas not in Special Flood Hazard Areas may be protected by floodcontrol structures. Refer to Section 2.4 "Flood Protection Measures" ofthe Flood Insurance Study report for information on flood control structuresfor this jurisdiction.

projectionThe used in the preparation of this map was New Hampshire Statehorizontal datumPlane (FIPSZONE 2800). The was NAD83,

GRS1980 spheroid. Differences in datum, spheroid, projection or State Planezones used in the production of FIRMs for adjacent jurisdictions may result inslight positional differences in map features across jurisdiction boundaries.These differences do not affect the accuracy of the FIRM.

Flood elevations on this map are referenced to the North American VerticalDatum of 1988. These flood elevations must be compared to structure and

vertical datum.ground elevations referenced to the same For informationregarding conversion between the National Geodetic Vertical Datum of 1929and the North American Vertical Datum of 1988, visit the National Geodetic

http://www.ngs.noaa.gov/Survey website at or contact the National GeodeticSurvey at the following address:

NGS Information ServicesNOAA, N/NGS12National Geodetic SurveySSMC- 3, #92021315 East- West HighwaySilver Spring, MD 20910- 3282

To obtain current elevation, description, and/or location information for bench marksshown on this map, please contact the Information Services Branch of the

(301) 713- 3242,National Geodetic Survey at or visit its website athttp://www.ngs.noaa.gov/.

Base map information shown on this FIRM was derived from U.S. Geological SurveyDigital Orthophoto Quadrangles produced at a scale of 1:12,000 from photographydated 1998 or later. These images were recast by NH GRANIT onto the NH StatePlane coordinate system.

This map reflects more detailed and up- to- date stream channel configurationsthan those shown on the previous FIRM for this jurisdiction. The floodplainsand floodways that were transferred from the previous FIRM may have beenadjusted to conform to these new stream channel configurations. As aresult, the Flood Profiles and Floodway Data tables in the Flood InsuranceStudy report (which contains authoritative hydraulic data) may reflect streamchannel distances that differ from what is shown on this map.

Corporate limits shown on this map are based on the best data availableat the time of publication. Because changes due to annexations or de- annexationsmay have occurred after this map was published, map users should contactappropriate community officials to verify current corporate limit locations.

Map IndexPlease refer to the separately printed for an overview map of thecounty showing the layout of map panels; community map repository addresses;and a Listing of Communities table containing National Flood Insurance Programdates for each community as well as a listing of the panels on which eachcommunity is located.

Contact the FEMA Map Service Center at 1- 800- 358- 9616 for information onavailable products associated with this FIRM. Available products may includepreviously issued Letters of Map Change, a Flood Insurance Study report,and/or digital versions of this map. The FEMA Map Service Center may also bereached by Fax at 1- 800- 358- 9620 and its website at http://www.msc.fema.gov/.

If you have questions about this map or questions concerning the NationalFlood Insurance Program in general, please call1- 877- FEMA MAP(1- 877- 336- 2627)or visit the FEMA website at http://www.fema.gov/.

Recommended