FLOOD06748

• County: Mesa
• Community: Grand Junction
• Basin: Colorado Mainstem
• Title: FIRM - Grand Junction - Panel 4E
• Date: 7/15/1992
• Prepared For: Grand Junction
• Prepared By: FEMA
• Floodplain - Doc Type: Current FEMA Regulatory Floodplain Information

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DESCRIPTION OF LuCATION

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U.S. Coast and Geodetic Survey brass cap stamped" A 364 1963",
located 0.8 milE: north along 12th Street from intersection of North
Avenue and 12th 'Street at a bridqe over Grand Valley Canal.
Standard disk set in drill hole on top of the west end of a retainine
wall against the north side of the canal.

Brass cap set T1usn with pavement in center of intersection of
26% and Patterson Roads. Established by Mesa County.

u.S. Coast and Geodetic Survey disk, marked "B364 1963", sat in
southwest corner of concrete cistern on west side of St. Nicholas
Hellenic Church, approximatelY 1.0 miles north ot 12th Street
trom intersection of 14th and North Streets.

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SPECIAL FLOOD HAZARD AREAS INUNDATED
BY 100-YEAR FLOOD
ZONE A No base.flood elevations determmed.

ZONE AE Base flood elevations determined.

ZONE AH Flood depths of 1 to 3 feet (usually area~ of
ponding): base flood elevations determined.

ZONI:: AO Flood depths of 1 to 3 feet (usually shep,t
flow on sloping terrain); average depths
determined. For areas "f alhlvial fan flood-
ing, velocities also determined.

ZONE A99 To be protected nom lOO-year flood by
Federal flo-od protection system under
construction; 1"0 ba,e e1p.vations determined.

ZONE V Coastal flood with velOCity hazard (wave
action); no ba~.~ flood elevations deter-
mined.

ZONE VE Coastal flood with velocity hazard
action); base flood elevations Uta", "III'''U

FLOODWAY AREAS IN ZONE AE

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OTHER FLOuD AREAS

ZONE X Areas of SOO-year fiood;
100-year flood with
of less than 1 foot
areas less th an 1
areas protected by levees
year flood.

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ZONE X Areas determined to be 500-
year flood plain.

ZONE D Areas in which flood haldrd~ are
IJ ndeterm ined.

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Flood Boundary

Floodway Boundary

Zone D Boundat

Boundary Dividing Special Flood
Hazard Zones, and Boundary
Diviqin? Areas of Different
Coastal Base Flood Elevations
Within Special Flood Hazard
Zones.

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Base Flood Elevation lin.e; Ele-
vation in Feet*

Cross Section line

(EL 987)

Base Flood Elevation in Feet
Where Uniform Within Zone*

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Elev'ttion Reference Mark

*Referenced to the National Geodetic Vertical Datum of 1929

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NOTES

This map is for use in aaministering the National FlOOd Insurance
Program; it does not necessarily identify all areas subject to flooding,
particularly frqm local drainage sources of small size. or all planimetric
features outside Special Flood Hazard Areas.

Areas of special flood hazard (lOO.year Tlood) incluae Zones A, AI-30,
AE, AH, AG. A99 V, VI-30 AND VE.

Certain areas not in Special Floor! Hazard Areas may be protected-by
flood control structures.

Boundaries of the floodway~ were computed at cross sections and
interpolated between cross sections. The floodways were based on
hydraulic considerations with regard to requirements of the Federal
Emergency Management Agency.

Floodway widths in some areas may oe too narrow to show to scale.
Floodway widths are provided in the Flood Insurance Studv Report.

Coastal base flood elevqtions applY only landwdrd of tne shoreline.

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For adjoining map panels see separateiyprinted Map fndex

MAP REPOSiTOR. Y
Planning Departrr>ent
250 North 5th Street
Grand Junction, Colorado 81501-2668
(Maps availi'lble for reference only, not for distribution.)

INITIAL IDENTIFICATION
FEBRUARY 1 , 1974

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FLOOD HAZARD BOUNDARY MAP REVISIONS'
.JUNE 28, 1974
OCTOBER 10, 1975
DECEMBER 12, 1978
FLOOD INSURr\NCE RATE MAP ::FFECTIVE:
JANUARY 6, 1983

FLOOD INSURANCE RATE MAP REVISIONS:

Map revised JULY 15, 1992 to update corporate limits, to decft:d::>e
base flood elevatrons, to add base flood elevations, to add special.flood
hazard areas, to change special flood hazard areas, to update map
format, to add roads and road names and to reflect updated topographic
information.

To determine if flood insurance is available, contact an insurance
agent or call the National Flooa insurance Program at (800)
638-6620.

.

APPROXIMATE SCALE IN FEET
400 0 400

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'ROGRA;,

NA TIONAl FLOOD inSuft"

FI
FLOOD INSURANCE

CIlY
GRAND
COLORADO
MESA COUNTY'

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PANEL 4 OF 9

(SEE MAP iNDEX FOR PANELS NOT PRINTEDj

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PANEL LOCATION

COMMUNITY.PANEL NUMBER
o 117 00

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l:stU:
15, 1992

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Federal Emergency Management Agency