CHAPTER
5
NATURAL
RESOURCES
1.
Introduction
Conway enjoys an abundance of environmental features
and natural resources which contributes to the high quality of life associated
with the town. Arguably the prime attraction
for year-round and seasonal residents, as well as tourists visiting Conway, is
the abundance and access to the varied natural environment. Despite having urbanized nodes contained
within the villages, as well as the Route 16 highway corridor (also known as
“the strip”), much of the town’s landscape can be classified as rural in characternature. Planning based on natural features is
motivated by the desire to conserve and protect important areas, but also by
the belief that development of any kind can best be located, with less present
expense and future problems, if based on an understanding of natural
constraints.
This chapter of the master plan examines natural
features located in the town of Conway.
Inventory and analysis is provided for water resources, hazardous
materials and contaminated sites, floodplains, soils, wetlands, protected and
conservation lands, and forest resources.
In order to provide data and information for this
chapter, three principle methods were used.
The first consisted of an analysis of existing sources of natural
resource literature pertaining to Conway and/or the Mount Washington Valley
region. Two primary sources of
information used for this analysis included Scoping Report: New Hampshire
Route 16 and U.S. Route 302[1]
and Conway Natural Resources Inventory[2]. These studies represented the most
current inventories of natural resources in Conway completed since 1990. The second method consisted of natural
resources map layers provided by the University of New Hampshire Complex
Systems Research Center, the Town of Conway, the U.S. Federal Emergency
Management Agency (FEMA), and the New Hampshire Audubon Society. The third approach involved a series of
interviews with representatives of the Town of Conway Conservation Commission,
the U.S. Forest Service, the New Hampshire Division of Forestry, and the
University of New Hampshire Cooperative Extension Service (Carroll County
branch) to verify and update the information contained within the published
natural resource inventories.
2. Summary of
Findings and Conclusions
The following points highlight various natural
resource findings and conclusions presented within this chapter. Additionally, possible impacts on natural
resources due to growth and development within Conway are also discussed.
Conway’s water bodies (lakes, ponds, rivers, brooks
and streams) serve a multitude of uses including a utility function, an
economic stimulus through the attraction of tourists and seasonal residents,
and an aesthetic resource which improves the quality of life of residents. Other water resource findings include:
§
A total of 71 water
bodies have been identified in Conway.
§
Conway has over 1,400
acres of surface water contained within six major lakes and ponds.
§
The town of Conway
obtains its municipal water supply exclusively from the extraction of
groundwater with the primary source of this water being the Saco River Valley
Glacial Aquifer.
Every community has areas which have been subject to negative
environmental impacts such as spills of hazardous materials and chemicals. Most of Conway’s environmental
liabilities in
Conway are located within close proximity to major arterial roadways and
near prominent commercial nodes.
Hazardous material findings include:
§
According to the New
Hampshire Department of Environmental Services (NHDES), there are 132 sites or
areas within Conway that are either contaminated with hazardous material or are
currently registered for potential contamination monitoring.
§
The majority of Conway’s
the
contaminated sites in Conway involve leaking underground storage
tanks or heating oil tanks.
As water resources, in particular the Saco and Swift
Rivers, are dominant features on Conway’s landscape, floodplains are also a
significant constraint to growth and development in the town. Findings concerning Conway’s floodplains
include:
§
Due to the steep
slopes, general topography and concentration of numerous rivers, brooks and
streams, Conway is prone to periodic flooding over relatively short time
periods.
§
Flooding has occurred
during all seasons in Conway and can be attributed to the lack of effective
storage capacity within ponds and valleys throughout the entire watershed.
Soils and slopes present a planning and development
challenge in Conway due to the undulating topography throughout the entire
town. Findings on soils and slopes
within Conway include:
§
The majority of
Conway’s soils fall within the glacial till group. Soils within the glacial till group consist of either loose till
(soils with a loose or granular consistency) or hardpan (a dense subsurface
stratified soil layer).
§
The majority of land
within Conway contains slopes that are less than 35%.
Historically, wetlands were manipulated and destroyed
for the benefit of man made development.
However, communities now understand that wetlands represent some of the
most important materials within an ecosystem for both humans and wildlife as
they provide both flood and erosion control, as well as habitat for
animals. Observations on Conway’s
wetlands include:
§
The U.S. Department of
Agriculture Soil Conservation Service has identified 289 wetland areas within
Conway.
§
The wetlands within the
Page Randall Brook Watershed, the Black Cat Brook Watershed, and the Weeks
Brook/White Lot Brook/Black Brook Watershed stood out from other Conway wetland
as they provide valuable wildlife habitat, water quality improvements, and
flood control functions.
The attraction of Conway to many is that it has a
superior quality of life and character that is typically defined by its
environmental features such as lakes, ponds, rivers, brooks, farms, forestland,
wetlands and scenic views. Protected
lands which contain these environmental features are an asset to the town and
have contributed to Conway’s unique quality of life. Protected and conservation findings include:
§
Conway has 62 parcels
totaling approximately 8,610 acres protected for conservation purposes, representing
about 20% of the town’s land area.
§
The protected land
parcels range from two (2) acres to over 2,700 acres in size.
§
Most of the protected
land is located in the northern portion of Conway with the largest parcels
located within the Mountain Conservation District under Conway’s Zoning
Ordinance. The vast majority of these
areas represent portions of the town with elevations over 800 feet.
Based on the natural resource findings presented
throughout this chapter, implications about how Conway may change in the future
include:
§
As so much of Conway’s
character, quality of life and economic base is associated with the abundance
and accessibility of environmental features, it is imperative that the town
encourage the permanent protection of environmentally significant lands. Inability to protect these lands from future
development could lead to the incremental deterioration of qualities which have
historically made Conway a desirable community in which to live and work.
§
The influence of
topography on Conway’s natural form has created a situation where the most
desirable and feasible development locations for residential, non-residential
and roadways are flat parcels at relatively low elevations with gradual slopes. Coincidentally, these same locations contain
a large portion of the town’s wetland areas.
In order to ensure that development does not compromise the
environmental integrity of these lands, the town needs to maintain guidelines
and policies that ensures that the development of wetlands is avoided. In order to reduce the chance of wetland
development, it may be necessary to incorporate comprehensive wetland surveys
of potential residential and non-residential sites over three acres in size as
a condition of development or subdivision.
§
Although Conway enjoys
the benefits of having an adequate supply of municipal water, future
development will no doubt place pressure on water resources. To protect groundwater resources the town
should evaluate the need for additional aquifer protection and water
conservation guidelines and policies.
3.
Water Resources
The lakes, ponds, rivers, brooks and streams of
Conway represent a uniquely distinct feature of the town’s landscape. Their scenic beauty and recreational appeal
contributes both to the town’s quality of life and economic health. The water bodies are one part of the “scenic
package” that enhances the significant draw for the tourism industry which is
the foundation for the local economy.
In addition to surface water, groundwater is an important water resource
as it is the primary potable water source for Conway residents. With many competing demands for the town’s
water resources, a balance must be maintained between their use and protection.
For many communities in New Hampshire, water resource
issues have become one of the most important environmental issue over the past
five to ten years. Traditionally,
communities across New England have taken an infinite supply of inexpensive,
clean water for granted. However, a
number of communities are now realizing that the concept of a limitless supply
of affordable, uncontaminated water is something that is not a “given” and the
unwise use of this resource could result in a very significant financial
burden. For the purposes of this section,
water resources have been defined as surface water bodies (lakes, ponds and
rivers), aquifers, and public drinking water supplies (groundwater wells and
surface water intakes).
Surface Water Bodies
Like many communities in central and northern New
Hampshire, Conway is home to many forms of surface water bodies. Surface water bodies are defined as
perennial lakes, ponds, rivers and streams.
A total of seventy-one water bodies have been identified within Conway
by various federal, state, and local organizations.
In terms of lakes and ponds, the largest lake in town
is Conway Lake at 1,316 acres (see Figure 5-1). A series of smaller ponds are scattered throughout the town with Pequawket
Pond being the largest at 64 acres.
Table 5-1 indicates significant lakes and ponds within the town’s
boundaries.
Table 5-1. Lakes and Ponds |
|
Town of Conway |
|
Name |
Area (Acres) |
Conway
Lake |
1,316 |
Labrador
Point |
31 |
Dollof
Pond |
21 |
Pequawket
Pond |
64 |
Pudding
Pond |
22 |
Echo Lake |
16 |
Total
Acreage |
1,470 |
Source:
Conway Natural Resource Inventory, 1996. |
The major river water bodies in Conway include the Saco
River (Figure 5-2) with its respective tributary streams, and the Swift River
(Figure 5-3). Both the Saco and Swift
Rivers are protected under the New Hampshire Rivers Management and Protection
Act (RSA 483) and the New Hampshire Rivers Protection Program. These programs are statewide initiatives
which support the local protection of rivers, shorelines and adjacent lands
through river management plans. The
segments of the Saco and Swift Rivers that run through Conway have been
designated as “rural” rivers, which are defined as those rivers which are
adjacent to lands which are partially or predominantly used for agriculture,
forest management, and dispersed or clustered residential development. Some modifications have been made to both
rivers including low dams and diversion works.
Other streams and brooks within Conway include:
§
Artist Brook
§
Black Cat Brook
§
Black Brook
§
Clarke Brook
§
Elm Brook
§
Kearsarge Brook
§
Lucy Brook
§
Mason Brook
§
McQuade Brook
§
Mill Brook
§
Moat Brook
§
Page Randall Brook
§
Red Eagle Brook
§
Shepards Brook
§
Weeks Brook
§
White Lot Brook
§
Willey Brook
Map 5-1 indicates surface water bodies within Conway.
Aquifers and Groundwater Sources
Groundwater sources are defined as including both
public wells and aquifers, whether tapped or untapped. The town of Conway obtains its municipal
water supply exclusively from the extraction of groundwater with the primary
source of this water being the Saco River Valley Glacial Aquifer. The United States Geological Survey
describes the Saco Valley Glacial Aquifer as:
The extensive, unconfined sand and gravel aquifer
located along the Saco River from Bartlett, New Hampshire to Fryeburg, Maine,
is an important water supply for this region.
The aquifer ranges in width from one to three miles, covers a surface
area of 39 square miles and is located in the foothills of the White Mountains. Saturated thickness ranged from ten feet or
less near the valley walls to approximately 280 feet near the center of the
valley in Fryeburg…The principle flow path in the aquifer is in a cross-valley
direction from the till-covered or bedrock uplands toward the Saco River, the
major ground water discharge zone.
Gradients are steepest near the valley walls and flatten towards the
center of the valley. A groundwater
flow divide, which coincides with a surface water divide, is located to the
northeast of Pine Hill in the Redstone area of Conway, New Hampshire. Another groundwater flow divide is located
in the rear from north of Swans Falls to northwest of Fryeburg Center, Maine,
and has an approximate southwest-northeast trend.
The portion of the aquifer located in the northwestern
part of Conway is very productive with transmissivities[3]
exceeding 8,000 cubic feet per day. Due
to this productivity, the aquifer is an important water supply for the North
Conway Water Precinct, the Conway Village Fire District, as well as numerous
private wells that draw water from this source.
There are two other aquifers that are found within
the town’s boundaries, namely, the Weeks Brook Aquifer, and the Pequawket Brook
Aquifer. The Weeks Brook Aquifer is
located in the northeastern area of Conway within a tributary valley of the
Saco River. This aquifer is not as
productive as the Saco River Aquifer with transmissivities ranging from 0 to
1,000 cubic feet per day for most of the aquifer, to 8,000 cubic feet per day
in the north central and southwestern sections. The Pequawket Brook Aquifer is located in the southwest corner of
Conway and extends south through Albany to Silver Lake in Madison. Productivity is limited for this aquifer
with transmissivities ranging from 4,000 to 8,000 cubic feet per day. Map 5-2 indicates aquifer locations within
Conway.
4. Hazardous
Materials and Contaminated Sites
According to the New Hampshire Department of
Environmental Services (NHDES), there are 132 sites or areas within Conway that
are either contaminated with hazardous material or are currently registered for
potential contamination monitoring. As
shown on Map 5-3, the majority of these sites are located within close
proximity to major arterial roadways near prominent commercial nodes (North
Conway Village and Conway Village). The
purpose of identifying and monitoring contaminated or potentially contaminated
sites is to protect groundwater sources from pollutants. As shown in Table 5-2, the majority of
Conway’s contaminated sites involve leaking underground storage tanks or
heating oil tanks. Many of the other
listed sources in Table 5-2, are registrations for potential sources of
groundwater contamination including large septic systems and above-ground
storage tanks.
Table 5-2. Most Common Existing or Potentially
Existing Contaminated Sites |
||
Town of Conway: 2002 |
||
Contaminant
Source |
# Sites |
Description |
Above-Ground
Storage Tank |
10 |
Registration
of above-ground storage tank |
Holding
Tank |
5 |
Non-hazardous,
non-sanitary holding tank registration |
Underground
Storage Tank |
32 |
Leaking
underground storage tank |
Leaking
Heating Oil Tank |
9 |
Leaking
residential or commercial heating oil tank |
Septic
System |
32 |
Registration
of sub-surface septic system receiving >20,000 gallons/day |
Underground
Injection Control |
17 |
Discharges
of benign wastewaters not requiring a permit or a request to cease a
discharge |
Source:
New Hampshire Department of Environmental Services |
Other sources of potential and existing threats to
groundwater quality found within Conway include:
§
A Superfund site (1);
§
Hazardous waste sites;
§
Waste disposal grounds
and stump disposal areas;
§
Oil spill release
areas;
§
Septic lagoons; and,
§
Spray irrigation sites.
5.
Floodplains
For the purposes of determining 100 and 500-year
floodplains for the Saco and Swift Rivers, information was obtained from the
Federal Emergency Management Agency (FEMA) Flood Insurance Rate Maps for
Conway. As mentioned previously within
the water resources section, the dominant river features in Conway includes the
Saco and Swift Rivers, as well as smaller tributaries (Artist Brook, Black Cat
Brook, etc.).
As indicated on Map 5-4, most of the floodplains
within Conway are located in the “U-shaped” valleys of the Saco and Swift
Rivers. This type of figure indicates
the floodway (river course) as well as the 100 and 500-year floodplains. Due to the steep slopes, general topography
and the concentration of the region’s rivers, brooks and streams, Conway is
prone to periodic flooding over relatively short time periods. Flooding has occurred during all seasons and
can partially be attributed to the lack of effective storage capacity within
ponds and valleys throughout the entire watershed.
According to the U.S. Department of Housing and Urban
Development, historic flooding has occurred on the Saco and Swift Rivers, and
to a lesser extent on Kearsarge Brook and Pequawket Pond. Furthermore, minor flooding has also occurred
on Black Brook, Page Randall Brook, and Lucy Brook as a result of ponding
runoff. Conway has also experienced
periods of heavy flooding which has been attributed to a deep snow pack
combined with heavy spring rainfall as well as summer downpours. For example, in 1953, a heavy snow melt
combined with spring rains contributed to Conway’s largest flood which produced
a peak discharge of 43,900 cubic feet per second.
6. Soils
Soils are a natural three-dimensional body on the
earth’s surface that supports plants and that have properties resulting from
the integrated effect of climate and living matter acting on early parent
material, as conditioned by topography over periods of time[4].
Soils differ because of different topography, even
though they are formed from the same kind of parent material. A soil’s parent material is the
disintegrated and partially weathered rock from which the soil has formed. Parent materials for soils are grouped under
five categories including:
Alluvial –
Soil material such as sand, silt or clay that has been deposited on land by
recent rivers and streams.
Marine or Lacustrine – Fine grain clays that have been deposited by lakes
and seas. The low permeability of the
clay makes these deposits poor aquifers.
Organic –
Rotting vegetation mixed with silt, sand and gravel. Organic materials typically occupy poorly drained areas,
including lowlands underlain by marine deposits and depressions between ridges
of bedrock.
Outwash –
Deposited by meltwater from a glacier’s retreating front, this material
consists of particles ranging from silt to coarse gravel, but medium-sized
sands predominate.
Glacial Till
– Unsorted mixtures of clay, silt, sand and broken rock which was transported
and deposited directly by glacial ice.
Non-Classifiable – a combination of many different types of parent materials.
As indicated in Map 5-5, the majority of Conway’s
soils fall within the glacial till group.
Soils within the glacial till group consist of either loose till (soils
with a loose or granular consistency) or hardpan (a dense subsurface stratified
soil layer). Outwash represents the
second largest parent material category with outwash soils being typically
described with a high sand content.
Organic soils are found within scattered pockets throughout the town
which have formed in Conway’s depressions where plant remains have accumulated
over a long period of time. The
smallest percentage of soils within the town fall within the marine or
lacustine parent material category which are essentially former lake beds.
Soils are defined in more narrow classes than parent
materials in order to provide more detailed identification and a better
understanding of their characteristics.
These characteristics are applicable for proper soil management and/or
for development and construction purposes.
The classification of soils, referred to as the soil survey, is prepared
on a county-wide basis by the U.S. Department of Agriculture (USDA) Soil
Conservation Service (SCSNatural Resources Conservation Service). Field work for the last soil survey in
Carroll County was completed in the late 1960s with periodic published updates
and mapping. Based on interviews with
federal officials, a new soil survey for Carroll County is projected for
completion within the next five years.
Since the survey covers the entire county, soil surveys are generally
considered a “broad brush” type of analyses that is primarily suitable for
large-scale analysis and municipal planning purposes. These surveys, however, are usually not an accurate
representation of soils at small scales (development parcels) such as the
neighborhood or village level.
The kinds of soils present within a community can
greatly influence the types of activities that can take place in specific
areas. Some areas, such as wetlands and
steep slopes, have inherent limitations to development. The potential for development based on soil
conditions are defined as follows:
Very High
– Site conditions and soil properties are favorable for development with few or
no soil limitations.
High –
Site conditions and soil properties are not as favorable for development. Costs of measures for overcoming soil
limitations are slightly higher than those soils with very high potential.
Moderate –
Site conditions and soil properties are below the reference soil (a soil with
properties that have the most favorable characteristics for that particular
use).
Low – Site
conditions and soil properties are significantly below the reference soil.
Very Low –
There are severe soil limitations.
Measures to overcome limitations are extremely high or prohibitive.
In combination with soil types, the topography, in particular
the slope, is a condition that is typically factored into the development
potential of a respective area.
Depending on the region of the country and the type of development, site
development regulations generally place limitations on building activities on
slopes over 10% to 15%. The Town of
Conway’s Subdivision Regulations indicate that parcels with slopes of 35% or
more are subject to rigorous development restrictions. As shown in Map 5-6, the majority of Conway
contains slopes that are less than 35%.
7. Wetlands
Wetlands are areas that represent an interface
between the terrestrial and aquatic environments – essentially where land meets
water. Historically wetlands were
considered problem areas that had to be drained for agricultural uses or filled
for development. However, over the past
few decades a better understanding of the important ecological role that
wetlands play has emerged. For example,
wetlands provide the following environmental and socioeconomic benefits:
§
Flood and Storm
Damage Protection – In their natural
condition, most wetlands serve to temporarily store floodwaters, thereby
protecting downstream property owners from flood damage.
§
Erosion Control – When located between water courses and uplands,
wetlands help protect uplands from erosion because the wetland vegetation
increases the durability of sediment through binding with its roots.
§
Water Quality
Improvement – Wetlands are able to
intercept runoff from land before it reaches the water and help filter
nutrients, wastes and sediments from water.
Wetland plants and microorganisms are able to remove such nutrients as
nitrogen and phosphorus from runoff thus helping to prevent eutrophication or
over-enrichment of natural waters.
§
Fish and Wildlife
Values – Wetlands are among the most
productive ecosystems in the world and plants located in wetlands serve as a
food source for a multitude of animals.
Some animals spend their entire lives in wetlands, while others use
wetlands primarily for reproduction and nursery grounds. Most freshwater fisheries are considered
wetland-dependent because many species feed in wetlands or upon
wetland-produced food.
§
Recreation and
Aesthetics – Many recreational activities
take place in and around wetlands.
Hunting and fishing are popular activities, as well as hiking, bird
watching and photography which are all dependent, in some form or fashion, on
wetlands. While these activities are
important to the individuals participating in them, but they also represent a
significant boost to the economy from the spending by the individuals involved
in these type of activities. This is
particularly important in Conway due to the integral connection of outdoor
recreation and tourism and the local economy.
The most accurate way to identify the existence and
boundaries of wetland areas is by field assessments by wetland scientists. However, for the purposes of this chapter,
wetlands are identified using soil maps provided by the USDA. The Carroll County Soil Survey identifies
hydric (wetland) soils based on current standards for wetland delineation. As indicated in Map 5-7, a total of 289 wetlands
were identified based on separate soil units as defined within the soil survey.
The Natural Resource Inventory for Conway
evaluated each of Conway’s wetlands in the context of watersheds in which they
occurred, and their role as part of the larger wetlands complex. Three watersheds stood out as being
important since they provide valuable wildlife habitat, water quality
improvements, and flood control functions:
§
Page Randall Brook
Watershed (664 acres);
§
Black Cat Brook
Watershed (239 acres); and,
§
Weeks Brook/White Lot
Brook/Black Brook Watershed (1,764 acres).
8.
Protected and
Conservation Lands
The attraction of Conway for many residents, seasonal
visitors and tourists is the quality of life associated with the area. As such, undeveloped land that has been
protected from possible future development and conserved through various
protection mechanisms is commonly perceived as contributing to a community’s
quality of life. Quality of life in a
community is generally one of the factors that influence people to move to, and
stay in a particular community. As
shown in Figure 5-4, part of Conway’s character is its environmental features
such as lakes, ponds, rivers, brooks, farms, forestland, wetlands and scenic
views. All of these combinations of
features represent open space.
Therefore, if the assumption is made that Conway’s quality of life is,
in some form or fashion, associated with the abundance of environmental
features, preserving open space areas must be considered important in
maintaining the town’s quality of life.
According to the data provided by the University of
New Hampshire Complex Systems Research Center, Conway has 62 parcels totaling
approximately 8,610 acres protected for conservation purposes, representing approximately
20% of the town’s land area. The
protected land parcels range from two (2) acres to over 2,700 acres in
size. It should be noted that the Town
of Conway owns numerous parcels of land throughout Conway that are used for
recreation, municipal infrastructure, utilities, and common uses. However, it is unclear whether these parcels
are protected through conservation mechanisms.
Therefore, due to these unknown factors, it is assumed that these
parcels potentially could be developed for other uses in the future and are not
considered protected or conservation lands.
As shown in Map 5-8, most of the protected land is
located in the northern portion of Conway, with the largest parcels contained
within the Mountain Conservation District as defined by Conway’s Zoning
Ordinance. The vast majority of these
areas represent portions of the town with elevations over 800 feet.
In terms of mechanisms which protect land from
future development, a number of options exist for public, private and non-profit
owners landowners which preserve open space.
Public owners of protected land include the United States Government,
the State of New Hampshire, and the Town of Conway. Some mechanisms which are in place to protect public lands
include Section 6(f) of the Land and Water Conservation Act, Section 4(f) of
the Federal Aid and Highway Act, and RSA 4:30-a. A brief summary of each of the instruments used to protect public
land is presented below.
Section 6(f) Land and Water Conservation Act – This section of the Act provides funds that are
available through the federal government’s Land and Water Conservation
Fund. Lands which are acquired with
these funds are subject to a body of regulations which are administered through
the U.S. Department of the Interior.
These regulations identify that any lands subject to Section 6(f) cannot
be developed or converted for purposes which are inconsistent with the Act
without being replaced with other land which is comparable in use and value to
the proposed converted land. The New
Hampshire Department of Resources and Economic Development administer state and
local lands covered under Section 6(f).
Section 4(f) of the Federal Aid and Highway Act – This federal act, which was enacted in 1966,
establishes policy that encourages efforts to preserve “…the natural beauty of
the countryside and public park and recreation lands, wildlife and waterfowl
refuges, and historic sites”. The
designation of such lands for park, refuge or wildlife purposes may be made by
federal, state or local authorities which have jurisdiction over the respective
lands. The Secretary of Transportation
may authorize the taking of Section 4(f) lands only if there is no prudent or
feasible alternative to using the land and that plans are in place to minimize
the environmental risk to the site.
Currently the State of New Hampshire controls 118 acres in Echo Lake
State Park for recreation purposes and 70 acres at Cathedral Ledge for scenic
and forestry purposes which are considered 4(f) lands.
RSA 4:30-a – This state statute requires the state to hold a
public meeting prior to the taking of any municipally owned land for the
purpose of highway construction. If
after the public meeting, the local municipality denies the taking, the state
is required to an order from the state Superior Court. If an order is given, the state must
compensate the municipality for the respective land either through providing
comparable lands or with funds to purchase comparable lands.
Conway is also home to a portion of the White
Mountain National Forest (WMNF).
Federal legislation mandates that the National Forests be managed for
multiple uses, including timber harvesting, wildlife management and recreation. Land and resource management plans must also
be prepared by the federal government to guide this multi-purpose
management.
In addition to the mechanisms used by public
organizations to protect and conserve publicly owned lands, private landowners
may also undertake specific activieis to protect their land from future
development. Options include: 1) sell
the development rights of their land to a conservation organization who will
protect and manage the land; 2) initiate a conservation easement on their land;
and, 3) sell or donate their land to a local governing authority with the
stipulation that the land be protected in perpetuity. It should be noted that the protected lands indicated in Map 5-8
are a combination of both public and privately protected lands.
9. Forest
Resources
As Conway has become more urbanized, increasing
pressure has been exerted to convert undeveloped areas of the town into a
variety of man-made land uses. Forested
land is one of the resources that is continually being transformed into the
developed land areas of the town.
Aside from its economic benefit as a scenic resource
for seasonal residents and tourists and recreational activities, forestland
provides a host of environmental benefits such as:
§
Stabilization of soil
which prevents erosion and slows water runoff;
§
Absorbs carbon dioxide
and provides oxygen to the air;
§
Acts as a dust filter;
§
Stabilizes the water
table which protects watersheds and drinking water supplies;
§
Provides support and
protection for numerous wildlife species;
§
Provides shade in
summer and wind protection in winter; and,
§
Provides scenic beauty.
As shown in Map 5-9, the majority of Conway is
covered by deciduous forest with coniferous and mixed forest stands making up
the remainder.
In terms of forest management, the Conway Conservation
Commission and the State of New Hampshire both manage public forest lands. Private land owners can take advantage of a
variety of forest management programs which encourages private foresters to
implement sustainable forestry practices including weeding and thinning of
young timber, wildlife enhancement, tree cropping, forest fire protection, and
erosion control. Information and forest
programs for private land owners are available through the USDA Forest Service
and the University of New Hampshire Cooperative Extension Service (Carroll
County).
10.
Implications for the Future
The natural resource findings discussed in this
chapter provide insights as to how Conway has historically developed. The following are potential implications of the
natural resource findings on the future growth and development in Conway. Since Conway’s economic base relied heavily
on the capture of spending from tourists attracted by the area’s environmental
features, how the Town of Conway chooses to balance economic development and
natural resource protection will be the one of the most important issues facing
the community over the next decade.
As so much of Conway’s character, quality of life and
economic base is associated with the abundance and accessibility of
environmental features, it is important that the town encourage the permanent
protection of environmentally significant lands. Failure to encourage the permanent protection of these lands
could lead to the incremental deterioration of qualities which have
historically made Conway a desirable community in which to live and work.
The influence of topography on Conway’s natural form
has created a situation where the most desirable and feasible development
locations for residential, non-residential and roadways are flat parcels at
relatively low elevations with gradual slopes.
Coincidentally, these same locations contain a large portion of the
town’s wetland areas. In order to
ensure that development does not compromise environmental integrity, the town
should adopt development guidelines and policies which ensure that the
development of wetlands is avoided. In
order to reduce the chance of wetland development, it may be necessary to
incorporate comprehensive wetland surveys of potential residential and
non-residential sites over three acres in size as a condition of development or
subdivision.
Although Conway enjoys the benefits of having an
adequate supply of municipal water, future development will no doubt place
pressure on water resources. To protect
groundwater resources, the town should also consider reviewing existing policy
efforts concerning aquifer protection and water conservation.
[1] Prepared by HMM Associates, Inc. for the New Hampshire
Department of Transportation in 1991.
[2] Prepared by the Audubon Society of New Hampshire,
The New Hampshire Office of State Planning, The University of New Hampshire
Complex Systems Research Center for the Town of Conway Conservation Commission
in 1996.
[3] Transmissivity is the measure of the rate at which
water is transmitted through the saturated thickness of an aquifer. Higher transmissivity values mean a greater
water yield from the aquifer.
[4] As defined by the Carroll County Soil Survey of
Carroll County, New Hampshire prepared by the U.S. Department of Agriculture
Soil Conservation Service and Forest Service.