Hazard Vulnerability Assessment

Hazard Vulnerability Assessment

Flooding:

General information index. Also see current hazard mitigation measures. Also see Fictitious County, Bogus City and Fictitiouston flood plain maps (FIRMs).

Fictitious County, Bogus City, and Fictitiouston have all experienced the effects of flooding. Fortunately there are only a handful of areas that are subject to routine, repetitive flooding and in these areas there are no known residential or commercial structures at this time.

These were the headlines shortly after Hurricane Floyd struck North Carolina. Flooding in North Carolina can be devastating.

Thirty-five deaths blamed on Floyd
RALEIGH, Sept. 20 – State officials confirm 19 deaths in eastern North Carolina in Hurricane Floyd’s wake. A total of 35 are presumed dead based on the incidents in this county-by-county list. Two others are known to be missing.

To examine its vulnerability to flooding and make an appropriate assessment, the county and the municipalities choose several sources for information. One is the HAZUS program offered by FEMA. HAZUS provides a computer model. The flood loss estimation methodology consists of two basic analytical processes: flood hazard analysis and flood loss estimation analysis. In the hazard analysis module, characteristics such as frequency, discharge, and ground elevation are used to estimate flood depth, flood elevation, and velocity. In the loss estimation module, physical damage and economic loss is calculated based on the results of the hazard analysis. The results are displayed using a series of reports. Another method was to examine currently available FIRMs (Flood Insurance Rate Maps) also provided by FEMA. This hazard assessment does not differentiate between flood zones.

ZONE	DESCRIPTION
A	AREAS OF 100-YEAR FLOOD; BASE FLOOD ELEVATIONS AND FLOOD HAZARD FACTORS NOT DETERMINED.
AO	AREAS OF 100-YEAR SHALLOW FLOODING WHERE DEPTHS ARE BETWEEN ONE (1) AND THREE (3) FEET; AVERAGE DEPTHS OF INUNDATION ARE SHOWN, BUT NO FLOOD HAZARD FACTORS ARE DETERMINED.
AE	BASE FLOOD ELEVATIONS DETERMINED.
AH	AREAS OF 100-YEAR SHALLOW FLOODING WHERE DEPTHS ARE BETWEEN ONE (1) AND THREE (3) FEET; BASE FLOOD ELEVATIONS ARE SHOWN, BUT NO FLOOD HAZARD FACTORS ARE DETERMINED.
A1-A30	AREAS OF 100-YEAR FLOOD; BASE FLOOD ELEVATIONS AND FLOOD HAZARD FACTORS DETERMINED.
A99	AREAS OF 100-YEAR FLOOD TO BE PROTECTED BY FLOOD PROTECTION SYSTEM UNDER CONSTRUCTION; BASE FLOOD ELEVATIONS AND FLOOD HAZARD FACTORS NOT DETERMINED.
ANI	AREA NOT INCLUDED. NO FLOOD HAZARD DATA AVAILABLE.
B	AREAS BETWEEN LIMITS OF THE 100-YEAR FLOOD AND 500-YEAR FLOOD; OR CERTAIN AREAS SUBJECT TO 100-YEAR FLOODING WITH AVERAGE DEPTHS LESS THAN ONE (1) FOOT OR WHERE THE CONTRIBUTING DRAINAGE AREA IS LESS THAN ONE (1) SQUARE MILE; OR AREAS PROTECTED BY LEVEES FROM THE BASE FLOOD.
C	AREAS OF MINIMAL FLOODING.
D	AREAS OF UNDETERMINED, BUT POSSIBLE, FLOOD HAZARDS.
V	AREAS OF 100-YEAR COASTAL FLOOD WITH VELOCITY (WAVE ACTION); BASE FLOOD ELEVATIONS AND FLOOD HAZARD FACTORS NOT DETERMINED.
V1-V30	AREAS OF 100-YEAR COASTAL FLOOD WITH VELOCITY (WAVE ACTION); BASE FLOOD ELEVATIONS AND FLOOD HAZARD FACTORS DETERMINED.
X	AREAS DETERMINED TO BE OUTSIDE 100-YEAR FLOODPLAIN.
X1-X30	AREAS OF 500-YEAR FLOOD; AREAS OF 100-YEAR FLOOD WITH AVERAGE DEPTHS OF LESS THAN ONE (1) FOOT.

For the purposes of planning, the vulnerability to this hazard is divided into creeks, streams, lakes and/or river basins. There are overlaps in population because a number of these waterways merge at various points. The majority (approximately 82%) of structures and populations that could potentially be effected fall into this category. Digital images of the Fictitious County 100 year flood plain and 500 year flood plain, as well as Bogus City 100 year flood plain and 500 year flood plain, and Fictitiouston 100 year flood plain and 500 year flood plain are available. FEMA Flood Insurance Rate Maps (FIRMs) are available from FEMA, Fictitious County Emergency Management and the county and municipal planning departments.

There are no known critical facilities in either the 100 or 500 year flood plain!
Those structures that exist only in the 500 year flood plain are listed in that column.
There may be X Zones included in the estimates below. Elevation, discharge, and flow were not calculated and address information was extrapolated only from within the boundary of the 100 and 500 year flood plain. The following are maximum numbers for planning purposes and analysis only.

Total Structures and Population in Flood Plain
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	1,834	100 Year Flood Plain	5,934
500 Year Flood Plain	93	500 Year Flood Plain	289

BACK CREEK	FREE NANCY BRANCH	LOOKOUT SHOALS LAKE	ROCKY RIVER
BUFFALO SHOALS CREEK	FOURTH CREEK	McCRARY CREEK	SNOW CREEK
BYERS CREEK	GREGORY CREEK	MORRISON CREEK	SOUTH YADKIN RIVER
CATAWBA RIVER	HAGER CREEK	OLIN CREEK	STUMPY CREEK
CODDLE CREEK	HICKS CREEK	PASTURE BOTTOM CREEK	THIRD CREEK
CORNELIUS CREEK	HOBBS CREEK	PATTERSON CREEK	WEATHERS CREEK
DUTCHMAN CREEK	HUNTING CREEK	REEDS CREEK	WEST ROCKY RIVER
DYE CREEK	KINDER CREEK	ROCKY CREEK EAST	WORK CREEK
FIFTH CREEK	LAKE NORMAN	ROCKY CREEK WEST	Damage estimates

HUNTING CREEK
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	15	100 Year Flood Plain	48
500 Year Flood Plain	0	500 Year Flood Plain	0

SNOW CREEK
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	10	100 Year Flood Plain	32
500 Year Flood Plain	0	500 Year Flood Plain	0

ROCKY CREEK EAST
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	28	100 Year Flood Plain	90
500 Year Flood Plain	0	500 Year Flood Plain	0

OLIN CREEK
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	7	100 Year Flood Plain	22
500 Year Flood Plain	0	500 Year Flood Plain	0

PATTERSON CREEK
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	7	100 Year Flood Plain	25
500 Year Flood Plain	0	500 Year Flood Plain	0

WEATHERS CREEK
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	4	100 Year Flood Plain	14
500 Year Flood Plain	0	500 Year Flood Plain	0

ROCKY RIVER
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	3	100 Year Flood Plain	10
500 Year Flood Plain	10	500 Year Flood Plain	35

DYE CREEK
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	11	100 Year Flood Plain	35
500 Year Flood Plain	0	500 Year Flood Plain	0

WEST BRANCH ROCKY RIVER
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	2	100 Year Flood Plain	7
500 Year Flood Plain	0	500 Year Flood Plain	0

WORK CREEK
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	2	100 Year Flood Plain	7
500 Year Flood Plain	0	500 Year Flood Plain	0

HOBBS CREEK
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	47	100 Year Flood Plain	150
500 Year Flood Plain	0	500 Year Flood Plain	0

HAGER CREEK (Lake Norman)
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	44	100 Year Flood Plain	141
500 Year Flood Plain	0	500 Year Flood Plain	0

McCRARY CREEK (Lake Norman)
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	75	100 Year Flood Plain	240
500 Year Flood Plain	0	500 Year Flood Plain	0

BYERS CREEK
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	33	100 Year Flood Plain	106
500 Year Flood Plain	0	500 Year Flood Plain	0

STUMPY CREEK (Lake Norman)
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	41	100 Year Flood Plain	131
500 Year Flood Plain	0	500 Year Flood Plain	0

CORNELIUS CREEK (Lake Norman)
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	167	100 Year Flood Plain	534
500 Year Flood Plain	0	500 Year Flood Plain	0

ROCKY CREEK WEST (Lake Norman)
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	132	100 Year Flood Plain	422
500 Year Flood Plain	0	500 Year Flood Plain	0

HICKS CREEK (Lake Norman)
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	27	100 Year Flood Plain	86
500 Year Flood Plain	0	500 Year Flood Plain	0

BUFFALO SHOALS CREEK
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	9	100 Year Flood Plain	29
500 Year Flood Plain	0	500 Year Flood Plain	0

CATAWBA RIVER
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	80	100 Year Flood Plain	256
500 Year Flood Plain	0	500 Year Flood Plain	0

LOOKOUT SHOALS LAKE
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	82	100 Year Flood Plain	263
500 Year Flood Plain	0	500 Year Flood Plain	0

LAKE NORMAN
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	363	100 Year Flood Plain	1161
500 Year Flood Plain	0	500 Year Flood Plain	0

PASTURE BOTTOM CREEK
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	1	100 Year Flood Plain	4
500 Year Flood Plain	0	500 Year Flood Plain	0

KINDER CREEK
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	1	100 Year Flood Plain	4
500 Year Flood Plain	0	500 Year Flood Plain	0

CODDLE CREEK
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	1	100 Year Flood Plain	3
500 Year Flood Plain	0	500 Year Flood Plain	0

FIFTH CREEK
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	16	100 Year Flood Plain	48
500 Year Flood Plain	0	500 Year Flood Plain	0

DUTCHMAN CREEK
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	17	100 Year Flood Plain	55
500 Year Flood Plain	0	500 Year Flood Plain	0

MORRISON CREEK
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	9	100 Year Flood Plain	29
500 Year Flood Plain	0	500 Year Flood Plain	0

REEDS CREEK (Bogus City)
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	263	100 Year Flood Plain	842
500 Year Flood Plain	8	500 Year Flood Plain	24

SOUTH YADKIN RIVER
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	32	100 Year Flood Plain	102
500 Year Flood Plain	0	500 Year Flood Plain	0

BACK CREEK
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	6	100 Year Flood Plain	102
500 Year Flood Plain	14	500 Year Flood Plain	45

THIRD CREEK (Fictitiouston)
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	128	100 Year Flood Plain	410
500 Year Flood Plain	34	500 Year Flood Plain	109

FOURTH CREEK (Fictitiouston)
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	127	100 Year Flood Plain	407
500 Year Flood Plain	11	500 Year Flood Plain	35

FREE NANCY BRANCH (Fictitiouston)
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	62	100 Year Flood Plain	198
500 Year Flood Plain	11	500 Year Flood Plain	35

GREGORY CREEK
Number of residential or commercial structures:		Population estimate:
100 Year Flood Plain	7	100 Year Flood Plain	23
500 Year Flood Plain	5	500 Year Flood Plain	16

* Damage estimates that may result from a 500 year flood event:

Structural Damage	$602,187
Non - structural (i.e. power distribution systems, etc.)	$1,470,000
Contents	$670,000
Lost inventory	N/A
Relocation losses (cost of relocating population)	$2,640,000
Capital losses	N/A
Wages lost	$1,570,000
Retail income losses	N/A
Total Potential Losses	$6,952,187

* Mathmatical calculation based on 100% of all property effected (25% structural, 25% contents) N/A indicates the data was not available.