Master Plan
Nashua Fire Rescue, NH
Figure 74. ISO 1.5-Mile Engine Company Service Area
\ € Senter
\ Form Estates
Nashua Fire Rescue
412.1 Miles of Roads
Roads within 1.5 miles of
a Fire Station: 203.6 miles
Percentage of Coverage:
49.4%
ot
Fire Station
1.5 Mile Travel Area
Nashua Boundary
Fire Districts
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3 Four Hills
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Master Plan Nashua Fire Rescue, NH
ISO Response Performance
Master Plan Nashua Fire Rescue, NH
Figure 73. NFPA 1710 4 and 8-Minute Travel
y Sentecae
(Form scores,
IH 122 m=
Northwest” )
4 Conservation. Sa"
2 lot —
Benson
Park
@® Fire Station i AN ' = >
<> 4Minute Travel
@ 8 Minute Travel
7) Nashua Boundary
CI
Fire Districts
o 4
a
Flints Hill d
123m P . p 4
ang were
aes
zero
Main Street
wildlife ——
Master Plan Nashua Fire Rescue, NH
RESOURCE DISTRIBUTION
To determine how Nashua Fire Rescue’s current deployment model affects coverage throughout the City,
the current performance of the department must first be evaluated. Using fire service industry standards to
include the National Fire Protection Association (NFPA) standards and Insurance Services Office (ISO)
criteria, Nashua’s deployment model and performance were evaluated.
Master Plan
Nashua Fire Rescue, NH
The next figure provides an analysis of incident density using three years of fire rescue response data from
January 1, 2017, through December 31, 2019. This analysis, commonly referred to as Hot Spot Mapping,
calculates areas of greatest demand based on the density of incidents within an area. This analysis does not
indicate how many calls actually occurred within each ring, but instead provides a way to compare each area
Master Plan Nashua Fire Rescue, NH
POPULATION DENSITY AND GEOGRAPHICAL DEMAND
A major contributing factor to the levels of service demand experienced by Nashua is the population density
of the areas served within its jurisdiction. The City of Nashua is an urban municipality, with many of its
developed areas exceeding population densities of 3,000 people per square mile.
Master Plan Nashua Fire Rescue, NH
When demand for service is analyzed by the day of the week, Fridays and Saturdays stand out as the days of
greatest demand while Sundays have the least amount of demand. Monday through Thursdays are relatively
constant with nearly equal levels of demand.
Finally, in Figure 70, the demand by hour of the day is shown.
Figure 70. Service Demand by the Hour of the Day, 2017-2019
10.0%
9.0%
8.0%
7.0%
6.0%
5.0%
4.0%
3.0%
2.0%
1.0%
Master Plan Nashua Fire Rescue, NH
Temporal Variation Analysis
Temporal variations are the patterns of activity occurring within certain periods of time. In this section, these
patterns are displayed by month, day, and hour to provide Nashua Fire Rescue with insights into when
increases and decreases in service demand based on historical patterns are anticipated. In Figure 68, the
temporal variation by month of the year for Nashua is shown.
Figure 68. Service Demand by Month, 2017-2019
Master Plan Nashua Fire Rescue, NH
When the relative frequency of incident types is compared, the majority (59.6%) of Nashua Fire Rescue’s
demand is for emergency medical services. Additionally, 35.7% of Nashua’s total call volume across the three-
year period was for nonemergent call types such as service calls, good intent, and false alarms. Fires,
hazardous conditions, and overpressure/overheating emergencies accounted for 4.5% of the total call
volume.
Master Plan
9,000
8,000
7,000
6,000
5,000
4,000
3,000
2,000
1,000
0
m 2014
2015
2016
m2017
™2018
m2019
Fire
196
300
325
223
244
157
Figure 65. Service Demand by NFIRS Classification, 2015-2019
Hazardous
Overpress
6 4170
6 4209
3 6615
0 8331
11 8038
8 4562
Condition
413
399
327
430
348
175
Service
