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Table 3.46. Worst-Case 2,500 Year, 6.7 Magnitude Earthquake Top 10
Counties by Displaced Households
Mitigation
Planning
Region County
Displaced
Households
L Johnson 282
G Sedgwick 233
J Shawnee 112
L Wyandotte 96
K Douglas 86
I Riley 68
L Leavenworth 29
H Crawford 24
I Lyon 20
U Geary 20
Source: State Hazard Mitigation Plan 2013
In Table 3.47 data taken from Hazus-MH 2.1 indicates the shake zones that could potentially
affect the counties within Region L. This analysis is based on a worst case 2500 year, 6.7
magnitude earthquake.
Table 3.47. Worst-Case 2500-Year, 6.7 Magnitude Earthquake Ground Shaking
Potential for Each Kansas County in Region L.
County
Johnson
Leavenworth
Wyandotte
0% to
4.2%
PGA
4.3% to
5.0%
PGA
5.1% to
6.0%
PGA
x
x
x
6.1% to
7.5%
PGA
Subtotal 0 0 3 0 0
Source: State Hazard Mitigation Plan 2013
Summary
7.6% PGA and
Higher
The planning area is at a low risk for seismic activity. It lies between two faults, the New
Madrid, and the Humboldt Fault, but far enough away that any damages would be due to earth
shaking and not a direct quake. At issue for the region would be the influx of people from the
fault zones and the subsequent feeding and sheltering of these individuals for an extended
period of time.
Local Mitigation Concerns
• Region L is in a low seismic activity area, however, earth shaking at a low magnitude
can still cause damage to property and people. The counties that make up the region
have tall buildings that are prone to the effects of shaking. Along with the hilly terrain in
the region, earth shaking could cause extensive damage.
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