ZONEX

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353353

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338

338

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ZONE XZONE X

ZONE XZONE X

ZONE AEZONE AE

HORSEHORSE

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ZONEX

ZONEX

STREET

STREET

ZONEAE

ZONEAE

ZONEAE

ZONEAE

ZONEX

ZONEX

HULLBAKERS PLACE

HULLBAKERS PLACE

Briar HydroPenstock

Intake Dam

Briar HydroPenstock

Intake Dam

SSTT

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310310

ZONE XZONE X

ST

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322322

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ZONE XZONE X

ZONEX

ZONEX

ZONE XZONE X

311311

Canal Inlet Structure DamCanal Inlet Structure Dam

ZONEAE

ZONEAE

STREETSTREET

PPEENNWWOOOODD

CITY OF CONCORD

CITY OF CONCORD

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CITY OF CONCORDCITY OF CONCORD

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355355

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354354

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CR

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319

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348348

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AV

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ContoocookPark Dam

ContoocookPark Dam

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CITY OF CONCORD330110

CITY OF CONCORD330110

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HHIILLLL

BOROUGHBOROUGH

320320

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353353

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Briar PipeFactory Dam

330110330110

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WILDLIFE MANAGEMENT BOUNDARY

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275000 FT

280000 FT

1000000 FT

288

000m E

289

000m E

4792

000m N

4793

000m N

4794

000m N

4795

000m N

71°37'30.00"

43°16'52.50"

71°37'30.00"

43°15'00.00"

71°35'37.50"

43°15'00.00"

71°35'37.50"

43°16'52.50"

JOINS PANEL 0526

JOIN

S P

AN

EL

031

9

JOINS PANEL 0336

JOIN

S P

AN

EL

033

9

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

April 19, 2010EFFECTIVE 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 0338E

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 NUMBER33013C0338E

EFFECTIVE DATEAPRIL 19, 2010

Federal Emergency Management Agency

MERRIMACK COUNTY,

NEW HAMPSHIRE(ALL JURISDICTIONS)

BOSCAWEN, TOWN OF 330105 0338 ECONCORD, CITY OF 330110 0338 E

PANEL 338 OF 705(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 from local

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/.