09011c0336G (PDF)

NOTES TO USERS
This map is for use in administering the National Flood Insurance Program. It does
not necessarily identify all areas subject to flooding, particularly from local drainage
sources of small size. The community map repository should be consulted for
possible updated or additional flood hazard information.
To obtain more detailed information in areas where Base Flood Elevations (BFEs)
and/or floodways 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 purposes of construction and/or floodplain management.
Coastal Base Flood Elevations shown on this map apply only landward of 0.0’
North American Vertical Datum of 1988 (NAVD 88). 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.
Boundaries of the floodways 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.
The projection used in the preparation of this map was Connecticut State Plane
Zone (FIPS zone 0600). The horizontal datum was NAD 83, GRS 1980
spheroid. Differences in datum, spheroid, projection or UTM 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 this 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 ground elevations
referenced to the same vertical datum. For information regarding conversion
between the National Geodetic Vertical Datum of 1929 and the North American
Vertical Datum of 1988, visit the National Geodetic Survey website at
http:/Awww.ngs.noaa.gov 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, Maryland 20910-3282
(301) 713-3242
To obtain current elevation, description, and/or location information for bench marks
shown on this map, please contact the Information Services Branch of the National
Geodetic Survey at (301) 713- 3242, or visit its website at http://www.ngs.noaa.gov.
Base map information shown on this FIRM was derived from digital orthophotography
provided by the Connecticut Deptarment of Environmental Planning. This information
was created from photography dated 2000, 2004 and 2005.
The profile baselines depicted on this map represent the hydraulic modeling baselines
that match the flood profiles in the FIS report. As a result of improved topographic data,
the profile baseline, in some cases, may deviate significantly from the channel
centerline or appear outside the SFHA.
Based on updated topographic information, this map reflects more detailed and
up-to-date stream channel configurations and floodplain delineations than
those shown on the previous FIRM for this jurisdiction. As a result, the Flood
Profiles and Floodway Data tables for multiple streams in the Flood
Insurance Study Report (which contains authoritative hydraulic data) may reflect
stream channel distances that differ from what is shown on the map. Also, the
road to floodplain relationships for unrevised streams may differ from what is
shown on previous maps.
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.
Please refer to the separately printed Map Index 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.
For information on available products associated with this FIRM visit the Map
Service Center (MSC) website at http://msc.fema.gov. Available products may
include previously issued Letters of Map Change, a Flood Insurance Study Report,
and/or digital versions of this map. Many of these products can be ordered or
obtained directly from the MSC website.
If you have questions about this map, how to order products, or the National
Flood Insurance Program in general, please call the FEMA Map Information
eXchange (FMIX) at 1-877-FEMA-MAP (1-877-336-2627) or visit the FEMA
website at http://www.fema.gov/business/nfip.
72° 15' 00"
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The 1% annual chance flood (100-year flood), also known as the base flood, is the flood that has
a 1% chance of being equaled or exceeded in any given year. The Special Flood Hazard Area is
the area subject to flooding by the 1% annual chance flood. Areas of Special Flood Hazard
include Zones A, AE, AH, AO, AR, A99, V, and VE. The Base Flood Elevation is the water-surface
elevation of the 1% annual chance flood.
ZONE A
ZONE AE
ZONE AH
ZONE AO
ZONE AR
ZONE A99
ZONE V
ZONE VE
Cos FLOODWAY AREAS IN ZONE AE
The floodway is the channel of a stream plus any adjacent floodplain areas that must be kept free of
encroachment so that the 1% annual chance flood can be carried without substantial increases in
flood heights.
CBRS areas and OPAs are normally located within or adjacent to Special Flood Hazard Areas.
LEGEND
SPECIAL FLOOD HAZARD AREAS (SFHAs) SUBJECT TO
INUNDATION BY THE 1% ANNUAL CHANCE FLOOD
No Base Flood Elevations determined.
Base Flood Elevations determined.
Flood depths of 1 to 3 feet (usually areas of ponding); Base Flood Elevations
determined.
Flood depths of 1 to 3 feet (usually sheet flow on sloping terrain); average
depths determined. For areas of alluvial fan flooding, velocities also determined.
Special Flood Hazard Areas formerly protected from the 1% annual chance
flood by a flood control system that was subsequently decertified. Zone
AR indicates that the former flood control system is being restored to provide
protection from the 1% annual chance or greater flood.
Area to be protected from 1% annual chance flood by a Federal flood
protection system under construction; no Base Flood Elevations determined.
Coastal flood zone with velocity hazard (wave action); no Base Flood Elevations
determined.
Coastal flood zone with velocity hazard (wave action); Base Flood Elevations
determined.
OTHER FLOOD AREAS
Areas of 0.2% annual chance flood; areas of 1% annual chance flood with
average depths of less than 1 foot or with drainage areas less than 1 square
mile; and areas protected by levees from 1% annual chance flood.
OTHER AREAS
Areas determined to be outside the 0.2% annual chance floodplain.
Areas in which flood hazards are undetermined, but possible.
COASTAL BARRIER RESOURCES SYSTEM (CBRS) AREAS
OTHERWISE PROTECTED AREAS (OPAs)
1% Annual Chance Floodplain Boundary
0.2% Annual Chance Floodplain Boundary
Floodway boundary
eoccccccccccs CBRS and OPA boundary
ay eer rae a
eccncm dividing Special Flood Hazard Areas of different Base Flood Elevations,
ae flood depths, or flood velocities.
RAN DIG Base Flood Elevation line and value; elevation in feet*
(EL 987) Base Flood Elevation value where uniform within zone; elevation in
*Referenced to the North American Vertical Datum of 1988
Cross section line
== 23) Transect line
Zone D boundary
Boundary dividing Special Flood Hazard Area Zones and boundary
feet*
-_--- Culvert
\ /
Bridge
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45° 02’ 08”, 93° 02’ 12” Geographic coordinates referenced to the North American Datum of
1983 (NAD 83) Western Hemisphere
4989000 M 1000-meter ticks: Connecticut State Plane Zone
(FIPS Zone 0600), Lambert Conformal Conic projection
42g900m Ny 1000-meter Universal Transverse Mercator grid values, zone 18N
DX5510 x Bench mark (see explanation in Notes to Users section of this FIRM
panel)
M15 River Mile
For community map revision history prior to countywide mapping, refer to the Community
Map History table located in the Flood Insurance Study report for this jurisdiction.
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.
MAP REPOSITORIES
Refer to Map Repositories list on Map Index
EFFECTIVE DATE OF COUNTYWIDE
FLOOD INSURANCE RATE MAP
July 18, 2011
EFFECTIVE DATE(S) OF REVISION(S) TO THIS PANEL
MAP SCALE 1" = 500°
250 0 500 1000
—_eS SS! e——— FEET
—— | —J t ] METERS
150 0 150 300
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2, PANEL 0336G
LH FI RM
n FLOOD INSURANCE RATE MAP
NEW LONDON COUNTY,
NII] CONNECTICUT
O ALL JURISDICTIONS
all
PANEL 336 OF 554
Gil) (SEE MAP INDEX FOR FIRM PANEL LAYOUT)
=, CONTAINS:
=a COMMUNITY NUMBER PANEL SUFFIX
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iW MONTVILLE, TOWN OF 090099 0336 G
ATID WATERFORD, TOWNOF 090107 0336 le
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Notice to User: The Map Number shown below
should be used when placing map orders; the
Community Number’ shown above should be
used on insurance applications for the subject
<i community.
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| a MAP NUMBER
09011C0336G
i EFFECTIVE DATE
Da JULY 18, 2011
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