TER 3. HAZARD IDENTIFICATION AND RISK ASSESSMENT
-y of Nashua is susceptible to a variety of natural hazards, which are outlined in Table 2. For each hazard type, the hazard location
y, extent, and impact are also noted. Extent refers to how bad the hazard can be; it is not the same as location. Examples of extent
» potential wind speed, depth of flooding, and existing scientific scales (ex. Fujita Tornado Damage Scale). Impact refers to damages
juences resulting from the hazard.
zards in the Hazard Mitigation Plan Update 2018 have been adjusted to align with the hazard names identified in the State of New
ihire Multi-Hazard Mitigation Plan Update 2018. Two hazards identified in the State plan that do not impact Nashua are Avalanche a
| Flooding. !n addition, Dam/Levee Failure was removed from the 2018 Update as it is not a natura! hazard but instead a technologi:
Hazard Location within
i Type Hazard Extent Impact
Jurisdiction
che This hazard does not occur in This hazard does not occur in This hazard does not occur in
Nashua Nashua Nashua
| Flooding This hazard does not occur in This hazard does not occur in This hazard does not occur in
Nashua Nashua Nashua
Flooding All special flood hazard areas; FEMA flood probabilities (1%, Water damage to structures an
areas have been identified that
experience localized flooding on
a regular basis.
Slopes along Merrimack &
Nashua Rivers prone to erosion.
Roadways with the potential to
flood include:
FEE Turnpike: Southbound at
crossing of Spit Brook Rd
.2% possibility per year)
Erosion
their contents.
Damage or loss of infrastructur
including roads, bridges,
railroads, power and phone
lines, City communications, Cit
radio system, power generatio1
facility, domestic water, and
wastewater treatment plant.
Environmental hazards resultin
from damage.
