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partnered with the National Weather Service and the Manchester Health Department to offer at least two trainings annually on th
Skywarn Weather Spotter program, alternating venues and winter/summer spotter training. Pennichuck Water incorporates publi
education campaigns annually on responsible water use.

Natural disaster or safety related school programs - The Greater Nashua Public Health Network has partnered with the American R
Cross to deliver the Pillowcase Project and Prepare with Pedro curriculums to youth throughout the region. These programs target
elementary students and provide a forum to discuss preparedness in the context of safety and natural disasters. Mitigation could t
integrated into these programs in the future.

StormReady certification — The City has obtained StormReady certification through the Gray, Maine National Weather Service Offi:
This certification must be maintained every three years. StormReady uses a grassroots approach to help communities develop plar
handle all types of extreme weather—from tornadoes to winter storms. The program encourages communities to take a new, proi
approach to improving tocal hazardous weather operations by providing emergency managers with clear-cut guidelines on how to
improve their hazardous weather operations. To be officially StormReady, a community must: Establish a 24-hour warning point at
emergency operations center, have more than one way to receive severe weather warnings and forecasts and to alert the public, «
a system that monitors weather conditions locally, promote the importance of public readiness through community seminars, and
develop a formal hazardous weather plan, which includes training severe weather spotters and holding emergency exercises. Whil
these activities promote a more resilient Nashua, the only component that fits as a mitigation action are the required seminars an

preparedness presentations.

Firewise Communities certification — The City does not have Firewise Communities certification but should look to achieve this in t
next five years.

Public-private partnership initiatives addressing disaster-related issues - Partnerships between the City of Nashua and community
organizations have developed over the last year to include a partnership with the American Red Cross, the United Way of Greater
Nashua, Gateways Community Services, the Caregivers, Dartmouth-Hitchcock, Southern New Hampshire Health Services, and St. J
Hospital. These organizations have assisted in the delivery of preparedness information and programming to at-risk individuals anc
started the discussion of health equity and access to healthcare amidst disasters. The Nashua Office of Emergency Management hi
developed many public-private relationships through the Local Emergency Planning Committee.

‘'y of Nashua participates in the National Flood Insurance Program (NFIP). This provides full insurance coverage based on risk as shor
d Flood Insurance Rate Maps (FIRMs). The City joined the NFIP on June 15, 1979. As a participant in the NFIP, communities must ag
a floodplain management ordinance and enforce the regulations found in the ordinance. The City of Nashua has adopted the “City ¢
i Floodplain Development Ordinance,” found in Chapter 190 Land Use, Article VII. Floodplain Management
/ecede300.com/8731853). The regulations found in the “City of Nashua Floodplain Development Ordinance” apply to all lands
ated as special flood hazard areas by the Federal Emergency Management Agency (FEMA) in its "Flood Insurance Study for the Coun
rough, N.H." dated September 25, 2009, together with the associated Flood Insurance Rate Maps dated September 25, 2009, includ
‘ised map panels dated April 18, 2011. Additional information on the Floodplain Development Ordinance and Nashua’s participatior
IP can be found in Section 2.2 of this Plan.

‘y's Floodplain Administrator is currently not certified as a Certified Floodplain Manager but is working towards this certification.
lain management is an auxiliary function to the Waterways Manager/Environmental Scientist position. There is a check box on
g/zoning applications where applicants have to say if the property is or is not located in the floodplain. If it is located in the floodpla
ve site plan and/or building permit review process ensures that there is compliance with the floodplain management ordinance, incl
tions and requirement for elevation certificate. GIS department provides assistance with mapping when necessary. Education and
ch is done by the Waterways Manager and OEM staff. Waterways Manager reviews LOMC/LOMR/LOMA requests that come to the '
ovides information to the public when requested. The City runs an effective NFIP program though additional efforts on public outrez
enhance it greatly.

mmunity is currently in good standing with NFIP and there are no outstanding compliance issues. The most recent Community Assis
‘AV) was conducted in 2016. Another will be necessary in 2021. The flood insurance rate maps are digital. The City’s current floodpla
“ions meet FEMA & State minimum requirements. Permit process requires the applicant to complete a check box on building/zoning
itions if the property is or is not located in the floodplain. If it is located in the floodplain then the site plan and/or building permit re
s ensures that there is compliance with the floodplain management ordinance, including inspections and requirement for elevation
ate.

mmunity participates in the Community Rating System as of May 2017. Nashua’s CRS Class Ranking is Class 8 (Category B — Repetitiv
iry) through a total of 1193 credit points. Categories where Nashua obtained CRS points include:

Activity 310 — Elevation Certificates: The Building Department maintains elevation certificates for new and substantially improved
buildings. Copies of elevation certificates are made available upon request. (38 points)

Activity 330 — Outreach Projects: Credit is provided for informational outreach projects that include brochures in City Hall, general
outreach projects that include Disaster Preparedness presentations and targeted outreach projects that include a letter to the rep
loss area. These projects are disseminated annually. (48 points)

Activity 350 — Flood Protection Information: Credit is provided for floodplain information displayed on the community’s website. (¢
points)

Activity 420 — Open Space Preservation: Credit is provided for preserving approximately 43 percent of the Special Flood Hazard Are
(SFHA) as open space, protecting open space land with deed restrictions and preserving open space land in a natural state. (677 pc

Activity 430 — Higher Regulatory Standards: Credit is provided for a Building Code Effectiveness Grading Schedule (BCEGS) Classific:
of 4/4, state mandated regulatory standards and regulations administration. (47 points)

Activity 440 — Flood Data Maintenance: Credit is provided for maintaining and using digitized maps in the day to day management
floodplain. Credit is also provided for maintaining copies of all previous FIRMs and Flood Insurance Study Reports. (96 points)

Activity 450 — Stormwater Management: The community enforces regulations for stormwater management, soil and erosion contr
and water quality. (56 points)

Section 502 — Repetitive Loss Category: Based on the updates made to the NFIP Report of Repetitive Losses as of August 31, 2015,
City of Nashua, NH has 3 repetitive loss properties and is a Category B community for CRS purposes. All requirements for a Categol
community have been met. (No credit points are applicable to this section)

Activity 510 — Floodplain Management Planning: Credit is provided for the adoption and implementation of the City of Nashua Haz
Mitigation Plan, adopted May 22, 2013. A progress report must be submitted on an annual basis. An update to the credited plan w
due by October 1, 2018 (144 points)

Activity 630 — Dams: Credit is provided for a State Dam Safety Program. (45 points)

Activity 710 — County Growth Adjustment: All credit in the 400 series is multiplied by the growth rate of the county to account for
growth pressures. The growth rate for Hillsborough County is 1.04.

‘S class can be improved by strengthening the existing floodplain ordinance beyond the basic minimum requirements, such as addin;
ard requirement. This will be required during the City’s next CRS review to maintain the Class 8 rating. The Hazard Mitigation Plan di
> CRS planning requirements.

‘y of Nashua participates in the National Flood Insurance Program (NFIP). This provides full insurance coverage based on risk as sho.
d Flood Insurance Rate Maps (FIRMs). The City joined the NFIP on June 15, 1979. The City’s initial Flood Hazard Boundary Map was
ied on August 23, 1974 and its initial Flood Insurance Rate Map was identified on June 15, 1979. The current effective map date is A
L1.

anuary 31, 2017, the City has 155 NFIP policies in force and $43,548,100.00 of insurance in force. There have been 31 paid losses to
74.34 from 1979 to January of 2017. Nashua has three repetitive loss properties as of 2016; one is non-residential and two are sing
residential.

are 341 Structures (Primary Buildings) at risk to floods within the community. 81 structures throughout the City do not have NFIP po
ge that are fully or partially within the 1% annual chance floodplain. Streets with limited coverage include Marina Drive; Riverside Ci
view Trail; Cheryl Street; Chickie Street; Mayfair Lane; Bartemus Trail; Shore Drive; Brinton Drive; Walden Pond Drive; Canal Street; |
Tampa Street; Lund Road; Caldwell Road; Demanche Street; Fairview Ave.; Pell Ave.; Freshwater Ct.; Hassel Brook Road; Almont Str
y Lane; Harris Road; Meadowbreak Drive; Alex Circle; Niquette Drive; New Searles Road; Brook Village Road; and Royal Crest Drive.

irticipant in the NFIP, communities must agree to adopt a floodplain management ordinance and enforce the regulations found in tt
nce. The City of Nashua has adopted the “City of Nashua Floodplain Development Ordinance,” found in Chapter 190 Land Use, Artic
Jain Management (http://ecode360.com/8721853). The regulations found in the “City of Nashua Floodplain Development Ordinar

‘o all lands designated as special flood hazard areas by the Federal Emergency Management Agency (FEMA) in its "Flood Insurance S

County of Hillsborough, N.H." dated September 25, 2009, together with the associated Flood Insurance Rate Maps dated Septembe
ncluding the revised map panels dated April 18, 2011. The ordinance includes the following sections: applicability (§190-60}, district
ation (§190-61), definition of terms (§190-62), construction requirements (§190-63), water and sewer systems (§190-64),certificatio!
65), other permits (§190-66), watercourses (§190-67), special flood hazard areas (§190-68), special requirements for subdivision anc
§190-69}, and variance and appeals (§190-70).

1onstrate the City of Nashua’s continued compliance with NFIP requirements, the Resilient Nashua Initiative identified NFIP-related
sion actions as part of its comprehensive mitigation strategy. These actions are identified in in Section 4.2, Table 7—Mitigation Actic

ber of existing documents were reviewed and incorporated into the Nashua Hazard Mitigation Plan Update 2018. The City of Nashu
se Code was used to provide information on where and how the City builds. This was particulariy helpful when mapping critical faci
yrs (Section 3.4). The City of Nashua’s Master Plan provided insight on future development patterns (Section 2.1) and helped to info
alysis and prioritization of mitigation actions (Section 4.3). Finally, the City’s Comprehensive Emergency Management Plan was

iced to write the hazard descriptions used to determine the City’s vulnerability by hazard (Section 3.5).

fice of Emergency Management utilized the Safe Growth Audit to review existing plans for connections to the mitigation strategy.
Comprehensive Plan - Land Use

o The future land-use clearly identifies natural areas. The conservation areas and open space areas contain wetlands and flo
prone areas and are recommended for protection in the Conservation Element of the Plan.

o Land-use policies discourage development or redevelopment within natural hazard areas. The conservation element of the
encourages no development in wetlands and in flood zones and steep slopes and areas of unstable soils.

o The plan provides adequate space for expected future growth in areas located outside natural hazard areas. Those areas a
identified on the future land use map and within written goals and objectives in the applicable sections of the plan.

Comprehensive Plan — Transportation

o The transportation plan does not limit access to hazard areas. Planning for expansion of the transportation system involve:
review of existing environmental conditions and land uses in areas where expansion is being considered. Identification of t
areas is included in that review and the system expansion is designed to avoid those areas whenever possible.

o Transportation policy is not used to guide growth to safe locations. Land use and zoning policies guide growth more than
transportation policies. Most of the land in Nashua has already been developed with transportation access established. WI

new facilities are proposed, intensive environmental review is conducted to ensure that they are located in safe locations
as to identify, minimize and mitigate any potential negative impacts.

Movement systems are designed to function under disaster conditions (e.g., evacuation). New systems are designed to be
resilient, to operate under disaster conditions, and to support emergency operations. As funding becomes available, plans
improve existing systems by making them more resilient and supportive of emergency operations will be implemented.

Comprehensive Plan — Environmental Management

Oo

Environmental systems that protect development from hazards are identified and mapped. The wetlands and floodplains,
bodies, steep slopes and soils are shown in the plan. Parks and conservation land are mapped but they are not specifically
identified as protective from hazards. The water supply protection district is also mapped.

Environmental policies maintain and restore protect ecosystems. The goals and objectives and land use recommendations
the conservation and protective efforts required. The Nashua wetlands ordinance is very important to protecting wetlands
waterways, and water quality. It is more stringent than state regulation, however applicants can be granted special except
from compliance. There are several polluted former industrial sites and asbestos disposal sites that could act as hazard mu
in the event of a natural hazard (flood that washes away toxic waste for example). Those sites are mostly known.

Environmental policies provide incentives to development that is located outside protective ecosystems. The policies encc
creation of conservation developments to preserve natural areas by providing incentives for their protection. The local, ste
and federal environmental policies that exist mostly encourage protection of existing protective ecosystems and therefore
encourage development outside of these areas. In Nashua there is relatively little undeveloped areas so mostly we are see

development.

Comprehensive Plan — Public Safety

Oo

The goals and policies of the comprehensive plan are related to those of the FEMA Local Hazard Mitigation Plan. Generally
comport by steering development out of sensitive and known hazard areas.

Safety is explicitly included in the plan's growth and development policies. Plan objective is to ensure that proposed buildil
sites are safe from flooding meeting all FEMA requirements as specified by adopted ordinances.

QO

The monitoring and implementation section of the plan covers safe growth objectives. Many of those safe growth objectiv
were incorporated in the land use ordinances when they were updated and periodically thereafter when required by the $
and Federal Agencies.

Zoning Ordinance

0

The zoning ordinance conforms to the comprehensive plan in terms of discouraging development or redevelopment withir
natural hazard areas. This includes FEMA approved floodplain/floodway ordinances for development; wetlands ordinance;
supply protection district and multiple approval process generally protect the hazard areas from being developed.

The ordinance contains natural hazard overlay zones that set conditions for land use within such zones. Those areas have
specific conditions within the ordinances for the Planning Board, the Zoning Board of Adjustment and Conservation Comm
and the Planning and Building Department staff to administer the ordinances.

Rezoning procedures recognize natural hazard areas as limits on zoning changes that allow greater intensity or density of t
Those hazard attributes are flagged and accounted for in review of any rezoning being considered by the City.

The ordinance prohibits development within, or filling of, wetlands, floodways, and floodplains. There are specific ordinani
and procedures in effect compliant with state and federal and local laws.

Subdivision Regulations

Oo

oO

Oo

The subdivision regulations restrict the subdivision of land within or adjacent to natural hazard areas. The Planning Depart
Staff in conjunction with other review agencies/departments review subdivision plans prior to being presented to the Plan
Board, Zoning Board of Adjustment, Conservation Commission for mitigating any known hazard attenuated with the site,
development or adjacent issues that may affect subdivision and the lots created with the proposal.

The regulations provide for conservation subdivisions or cluster subdivisions in order to conserve environmental resources
There is a specific conservation subdivision ordinance which provides for the conservation of environmental resou

The regulations allow density transfers where hazard areas exist. The conservation subdivision allows density transfer with
development to preserve natural areas.

Capital Improvement Program and Infrastructure Policies

Oo

Other

walt

The capital improvement program limits expenditures on projects that would encourage development in areas vuinerabie
natural hazards. The CIP program relies on conformance to the Comprehensive (Master) Plan which may constrain expend

Infrastructure policies limit extension of existing facilities and services that would encourage development in areas vulnere
natural hazards. The general policies discourage expansion where reasonable.

The capital improvement program provides funding for hazard mitigation projects identified in the FEMA Mitigation Plan?
CIP Program recommends funding these types of projects.

Small area or corridor plans recognize the need to avoid or mitigation natural hazards. The area plans approved have gene
recognized need to address and attenuate natural hazards that may occur within the area.

The building code contains provisions to strengthen or elevate construction to withstand hazard forces. The City follows th
state and international building code relative to construction to withstand natural hazards for the region.

Economic development or redevelopment strategies include provisions for mitigation natural hazards? Natural hazards wc
need to be mitigated as part of any development or redevelopment.

There an adopted evacuation and shelter plan to deal with emergencies from natural hazards. There is an evacuation plan
areas impacted by the Nashua Levee System. There is no written shelter plan for the City of Nashua. Information about
sheltering is primarily institutional knowledge by OEM and Public Health. This should be formalized in the future. Evacuat
and Sheltering are not mitigation related and are instead response related actions.

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.

Circumferential Hwy: Within
Floodway

Daniei Webster Hwy: in 1% and
.2% Floodplain at Royal Crest Dr
Canal St: From Merrimack River
to Salvail Ct

Bridge St: Within Area With
Reduced Risk Due to Levee

E Dunstable Rd: Proximity to
Floodway and .2% Floodplain but
no flooding

Main Dunstable Rd: Within .2%
Floodplain from Valhalla Dr to
Memory Ave;

Proximity to .2% Floodplain for
much of its run

Spit Brook Rd: Within 1%
Floodplain at intersection with
FEE Turnpike

W Hollis St: Within Floodway at
Nashua River crossing

E Hollis St: Within Area With
Reduced Risk Due to Levee from
Denton Street to Crown
Street/Merrimack River
Concord St: Within
Floodway/1% Floodplain at
crossing of Pennichuck Brook
and change into DW Highway
Broad St: Within .2% Floodplain
at Canter Ct and Broadcrest Ln,
proximity to .2% Floodplain at
Spar Ave

Main St: Within Floodway at

Isolation of neighborhoods
resulting from tiooding.

Sewer backups.