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Page 1: FLOOD INSURANCE RATE MAP SHIAWASSEE COUNTY, MICHIGAN · 261163 Township of Shiawassee 260523 Charter Township of Owosso 260809 Charter Township of Caledonia 260300 ? # ˜ " 7 . .

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Township of Bennington

261163Township of Shiawassee

260523

Charter Township of Owosso

260809

Charter Township of Caledonia

260300

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Federal Emergency Management Agency

FLOOD INSURANCE RATE MAP

FIRM

MAP NUMBER

26155C0235C

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SHIAWASSEE COUNTY,MICHIGANALL JURISDICTIONS

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EFFECTIVE DATE

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MAP SCALE 1" = 1000’

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NOTES TO USERS

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Zone D boundary

Floodway boundary

1% Annual Chance Floodplain Boundary

0.2% Annual Chance Floodplain Boundary

*Referenced to the North American Vertical Datum of 1988

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LEGEND

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

ZONE A

ZONE AE

ZONE AH

ZONE AO

ZONE AR

ZONE A99

ZONE V

ZONE VE

ZONE X

FLOODWAY AREAS IN ZONE AE

OTHER FLOOD AREAS

OTHER AREAS

ZONE X

ZONE D

The 1% annual chance flood (100-year flood), also known as the base flood, is the flood that hasa 1% chance of being equaled or exceeded in any given year. The Special Flood Hazard Area isthe 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-surfaceelevation of 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 Elevationsdetermined.

Flood depths of 1 to 3 feet (usually sheet flow on sloping terrain); averagedepths determined. For areas of alluvial fan flooding, velocities also determined.

Special Flood Hazard Areas formerly protected from the 1% annual chanceflood by a flood control system that was subsequently decertified. ZoneAR 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 floodprotection system under construction; no Base Flood Elevations determined.

Coastal flood zone with velocity hazard (wave action); no Base Flood Elevationsdetermined.

Coastal flood zone with velocity hazard (wave action); Base Flood Elevationsdetermined.

The floodway is the channel of a stream plus any adjacent floodplain areas that must be kept free ofencroachment so that the 1% annual chance flood can be carried without substantial increases inflood heights.

Areas of 0.2% annual chance flood; areas of 1% annual chance flood withaverage depths of less than 1 foot or with drainage areas less than 1 squaremile; and areas protected by levees from 1% annual chance flood.

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

Areas in which flood hazards are undetermined, but possible.

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 different BaseFlood Elevations, flood depths or flood velocities.

Base Flood Elevation value where uniform within zone; elevation infeet*

Cross section line

Transect line

Geographic coordinates referenced to the North American Datum of1983 (NAD 83) Western Hemisphere

1000-meter Universal Transverse Mercator grid values, zone 16����

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Bench mark (see explanation in Notes to Users section of this FIRMpanel)

River Mile

Base Flood Elevation line and value; elevation in feet*

COASTAL BARRIER RESOURCES SYSTEM (CBRS) AREAS

OTHERWISE PROTECTED AREAS (OPAs)

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