FLOOD10557

• County: Boulder
• Community: Boulder County and Incorporated Areas
• Title: FIRM - Boulder County and Incorporated Areas - Panel 234F
• 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 NGVO) OESCR I PT ION 0

lOCATION

RM2

5305.18 Mark s located 0.65 mile southwest
a Ion 9 S tat e Hi g h y 7 from the
Lyons Post Offi ce e e t highway
crosses a conal, 156 ee sou hwest
of the centerl ine e highway,
92 feet northeast of the northeast
bank of St. Vroin Creek, 28 feet
southwest of the southwest rai I of
the Burl ington Northern, 27 feet
south of the west corner of trestle
No. 47.66, set in the top of the
southeast end of the wi ngwall of a
headgate of an irrigat ion canal.
Established by Howard, Needles,
Tammen and Bergendoff,

1

RM3

5390.38 Mark is located 1.2 miles southwest
along State Highway 7 from the
Lyons Pos Offi ce, 63 yards south
o' the north end of a larg~ rock
cl i f, 3 feet west of the foot of
the c f, 19 feet west of the
cente ine of the highway, set in
the op of he west concrete
r eta inn 9 wo I I 0 f 0 n i r rig 0 t ion
di t eh. Estobl i shed by Howard,
Nee die s, T 0 mm e non d B erg end 0 f f .

2

3

5

105016'52"
40013'07"

ZONE X

ZONE X
SOUTH
ST VRAIN
CREEK
:---.-<-
0--0
o
'Th
'%

(!)
(!)
N
o
.-J
W
z

~I
z
o
.....,

~
S

Fed

\

<10011' 15"
105016'52"

19

o
<
o
a:

I
U
.-J
:::)
<:)

31

BRADFORD STREET

South

ZONE X

JOINS PANEL

E

w
:::)
z
UJ
>
<{
o
z
o
u
w
(j)

~I
2
:J
w
I-
<(
0:
o
Q
0:
o
U

TOWN OF LYONS
080029

OF LYONS
BOULDER COUNTY-

ZONE X

080023

F

ZONE X

20

ZONE X

~

ZONE X

29

Cl
<:(
g

NOTE: MAP AREA SHOWN ON THIS PANEL IS LOCATED WITHIN TOWNSHIP 3
AND RANGE 70 WEST

52
-l
~
r-

JOINS

0245

DUSK
ROAD

32

L

,AREAS INUNDATED

ZONE AE

105015'00"
40013'07"

ZONE AH

ZONE AO

ZONE A99

ZONE V

Coastal Hood

ZONE VE

hazard
determined.

FLOODWAY AREAS IN ZONE AE

OTHER FLOOD AREAS
ZONE X

OTHER AREAS
ZONE X determined to
floodplain.

ZONE 0

in which
undetermined.

hazards are

UNDEVELOPED COASTAL BARRIERS

Identified Identified
1983
Coastal barrier areas are normally within or
Flood Hazard Areas.

Flood

Floodvvay Boundary

Zone D Boundary

Boundary
Hazard
Dividing
Coastal

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

Zones.
Base

Flood

Elevation
Map

~513~

Cross Section

(EL 987)

RM7X
. M2

Reference Mark

97007'30". 32022'30"

Coordinates Based on North
Datum

NOTES

This map is for use in administering
it does not necessarily identify all
local sources of small
Special Hazard Areas

Coastal base flood elevations
the effects of wave action;
from those developed
evacuation planning.

Areas of Special Flood Hazard (lOO-year flood) include Zones
A99, and VE.

AO,

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 floodvvays based on
considerations with regard to requirements of the Federal
Management

Floodvvay
Floodway

LD
L.0
N
o
.-J
W
Z
<{
D-
(j)
Z
C
.....,

For community
Section 6.0 of the

mapping, see

For map panels and
Map

map source see separately

MAP REPOSITORY

Refer to Repository

on Map

EFFECTIVE DATE OF
COUNTYWIDE FLOOD INSURANCE RATE MAP:

JUNE 2, 1995

EFFECTIVE DATE(S) OF REVISION(S)

THIS PANEL:

Refer to the FLOOD INSURANCE MAP EFFECTIVE Dl.\.TE shown
on this map to determine when actuarial rates apply to structures
zones where elevations or depths have been established.

To determine if flood insurance is available. contact an
call the National Flood Insurance Program at 638-6620.

agent or

.

APPROXIMATE SCALE IN FEET

)

I

(SEE MAP INDEX FOR

NOT

400 11'15"
105015'00"

F

Federal