FLOOD10585 ‎(2)‎

• County: Boulder
• Community: Boulder County and Incorporated Areas
• Title: FIRM - Boulder County and Incorporated Areas - Panel 405F
• Date: 6/2/1995
• Prepared For: Boulder County
• Prepared By: FEMA
• Floodplain - Doc Type: Current FEMA Regulatory Floodplain Information

B

ELEVATION REFERENCE MARKS
REfERENCE ELEVATION
MARK (FEET NGVDj DESCRIPTION OF LOCATION

RM18

5 3 0 6. 2 6 An i r 0 n rod i n a con c r e t e p 0 s t ,
located 30 feet south of the
centerl ine of Niwot Road, 6 feet
west of the centerl ine of North
49th Street, and 1.0 foot north of
a fence. Establ i shed by U. S.
Geological Survey.

1

RM 1 9

5240.24 An iron post stamped "5242,"
located 32 feet south of the
centerl ine of Niwot Road, 41 feet
west of the centerl ine of North
55th Street, and 10 feet northwest
of a fence corner. Establ ished by
U.S. Geological Survey.

RM36

5115.65 A chiseled square on the center of
southeast headwal i of Nimbus Road
bridge over Lefthand Creek, located
10 feet south, 25 feet east, and 2
feel higher than center of bridge.
Established by U.S. Geological
Survey.

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105015'00"
40007'30"

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

ZONE AE

Base flood elevations determined.

JOINS PANEL 0265

105011'15"
40007'30"

I to 3
base

ZONE AH

Ditch

ZONE AO 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.

NOTE: MAP AREA SHOWN ON PANEL
TOWNSHIP 1 NORTH, RANGE 70 WEST AND TOWNSHIP 2 NORTH,
RANGE 70 WEST.

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ZONE A99 To be protected froml00-year flood by
Federal flood system under
construction; no elevations determined.

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ZONE V Coastal flood with velocity hazard (wave
action); no base flood elevations determined.

20

21

22

23

24

ZONE VE

Coastal flood with
action); base flood

hazard (wave
determined.

ZONE X

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ZONE X

FLOODWAY AREAS IN ZONE AE

OTHER FLOOD AREAS

ZONE X /\reas of SOO-year flood; areas of
flood with depths of less
'1 foot or with areas less than
1 square mile; and areas protected by
levees from 10G.-year flood.

Table

Mountain

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OXFORD

OTHER AREAS
ZONE X Areas determined
floodplain.

be outside SOO-year

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ZONE 0

in which
undetermined.

hazards are

UNDEVEl.OPED COAST,\l. BARRIERS

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Identified Otherwise
1990 Protected t\reas
located within or adjacent to Special

Identified
1983
Coastal barrier areas
Flood Hazard Areas

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BOULDER COUNTY
UNINCORPORATED AREAS
080023

Boundary

;:Ioodway Boundary

Lefthand
Creek

D Boundary

Boundary

Dividing Special Flood
Zones, and Boundary
Areas of Different
Base Flood Elevations
Special Flood Hazard

29

Dividing
Coastal
Within
Zones.

Base Flood Elevation Line;
Elevation in Feet. See Map Index
for Elevation Datum.

Cross Section Line

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ZONE X

Base Flood Elevation in Feet
Where Uniform Within Zone.
See Map Index for Elevation Datum.

Elevation Reference Mark

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(EL 987)
RM7X
. M2

River Mile

Horizontal Coordinates Based on North
American Datum of 1927 (NAD 27)
Projection.

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STARLING
COURT
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WAY COURT c.:J
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1-1- ill
(j)(j) NIWOT ROAD a:

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

Coastal base flood elevations only landward of 0.0 NGVD, and include
the effects of wave action; elevations may also differ significantly
from those developed by the National Weather Service for hurricane
evacuation planning.

Areas of Special Flood Hazard (lOa-year flood) include Zones A, AE, AH, AO,
A99, V, and VE.

PLACE

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97007'30", 32022'30"

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NOTES

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N1WOT

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<:0 32 MONARCH ROAD
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ZONE X

Certain areas not in Special Flood Hazard Areas may be protected by
flood control structures.

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 Federal
Emergency Management Agency.

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

limits

approximate boundaries of Coastal Barrier
and lor Otherwise Protected ,Ll,reas established
Barrier Improvement Act of 1990 (PL 101-591).

limits shovvn are current as of the date of this The user
contact community officials to determine corporate
have subsequent to the issuance of this map.

This map may
Resource
under the

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to countyvvide mapping, see
Report.

For adjoining map panels and base map source see separately printed
Map Index.

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CITY OF
080024

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MAP REPOSITORY
Refer to Repository Listing on Map Index

EFFECTIVE DATE OF
COUNTYWIDE FLOOD INSURANCE RATE MAP:

CORPORATE LIMITS

JUNE 2, 1995

EFFECTIVE DATE(S) OF REVISION(S) TO THIS PANEL:

T2N

Refer to the FLOOD INSURANCE RATE MAP EFFECTIVE DATE shown
on this map to determine when actuarial rates to structures in
zones where elevations or depths have been

To determine if flood insurance is available, contact an insurance agent or
call the National Flood Insurance Program at [phone].

ZONE X

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APPROXIMATE SCALE IN FEET
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FLOOD INSURANCE PROGRAM

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Dry

CITY

080024

LIMITS

AREAS

(SEE MAP INDEX FOR PANELS NOT PRINTED)

080024

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DRIVE

0405
0405

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LOKI
AVE

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Six Mile
Reservoir

SPINE ROAD

BOULDER COUNTY
UNINCORPORATED AREAS
080023

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Ditch

40003'45"
105015'00"

JOINS P/:1.NEL 0415

40003'45"
105011'15"

Federal

Management