The following definitions shall apply in the interpretation and implementation of this bylaw:
AGRICULTUREAny work which produces food or other products for commerce or subsistence which occurs in, on, or within 100 feet of a resource area or which is directly or indirectly dependent upon wetlands values for proper agricultural functions, such as prevention of pollution or maintenance of adequate water flow for irrigation. Agriculture includes, but is not limited to the growing of crops, including cranberries, and the raising of livestock. Nonagricultural activities in or within 100 feet of resource areas shall not have a significant effect on existing agriculture.
ALTERIncludes, without limitation, the following activities when undertaken to, upon, within or affecting resource areas protected by this bylaw:
(1) Removal, excavation, or dredging of soil, sand, gravel or aggregate materials of any kind.
(2) Changing of preexisting drainage characteristics, flushing characteristics, salinity distribution, sedimentation patterns, flow patterns, or flood retention characteristics.
(3) Drainage, or other disturbance of water level or water table.
(4) Dumping, discharging or filling with any material which may degrade water quality.
(5) Placing of fill, or removal of material, which would alter elevation.
(6) Driving of piles, construction, or repair of buildings or structures of any kind.
(7) Placing of obstructions or objects in water.
(8) Destruction of plant life, including cutting of trees.
(9) Changing temperature, biochemical oxygen demand, or other physical, biological, or chemical characteristics of any waters.
(10) Any activities, changes or work which may cause or tend to contribute to pollution of any body of water or groundwater.
(11) Incremental activities which have, or may have, a cumulative adverse impact on the resource areas protected by this bylaw.
AQUACULTUREThe growing, raising, breeding, storing, or producing of specified aquatic or marine organisms at specified locations for commercial, municipal, or scientific purposes as approved by appropriate agencies. Organisms in aquacultural use include, but are not limited to: shellfish, such as oysters, quahogs, clams, lobsters, mussels, scallops and crabs; finfish, such as trout, eel, herring, salmon, smelt and bass; amphibians, such as frogs; reptiles, such as turtles; seaweeds, such as Irish moss and dulse; edible freshwater plants, such as watercress; and plankton grown as a food source for other organisms. Activities in or within 100 feet of a resource area shall not have a significant effect on existing permitted aquaculture.
COASTAL BANKThe seaward face or side of any elevated landform, other than coastal dune, which lies at the landward edge of a coastal beach, land subject to coastal storm flowage, or other wetland. A coastal bank may serve one of two functions:
(1) It may serve as a vertical buffer because of its height and stability which protects upland areas from storm damage and flooding. Activities shall not increase erosion of a coastal bank, either from above (by stormwater runoff, brushcutting or other means) or from below (by tidal action, wind and waves). Any project on such a coastal bank shall have no adverse impact on the stability of the coastal bank.
(2) Coastal banks composed of unconsolidated sediment and exposed to vigorous wave action serve as a source of sediment for dunes, beaches, barrier beaches and other coastal landforms. Naturally occurring wave action removes sediment from these banks to replenish coastal landforms. These landforms protect coastal wetlands and real property by reducing storm damage and flooding by dissipating storm wave energy. Any project on or within a coastal bank serving this function shall not have a significant effect on that bank's ability to serve as a sediment source.
DIADROMOUS FISHDiadromous fish are species of fish that must migrate between fresh and marine waters to complete essential stages of their life history. In Harwich, spring spawning runs (river herring, white perch and Atlantic tomcod) and juvenile migrations (American eel) occur in Muddy Creek, Red River and Herring River. Juvenile eel migrations also occur in Cold Brook and the Andrews River. The coastal rivers serve as migratory habitat, and the freshwater ponds in these watersheds serve as spawning and nursery habitat. Activities in or within 200 feet of a river supporting a diadromous fish run shall not have a significant adverse effect on the fish run.
FISHERIES and/or MARINE FISHERIESMeans:
(1) The fish and shellfish resource itself, including all fish and shellfish found in fresh, salt or brackish waters and any organisms including plants that make up part of the food chain of such animals regardless of their commercial value; and/or
(2) The recreational or commercial catching of fish or shellfish from the ocean or from freshwater bodies.
FLOOD CONTROLThe ability of wetlands to absorb, store and slowly release floodwaters to minimize peak flood levels. Flooding can be caused by precipitation or a rising water table. Activities within 100 feet of resource areas shall not alter the flood control value of wetlands significantly.
GROUNDWATERAll subsurface water contained in natural geologic formations or artificial fill, including soil water in the zone of aeration. Activities in or within 100 feet of resource areas shall not significantly alter the existing quality or elevation of naturally occurring groundwater.
INLAND BANKIncludes the land area which normally abuts and confines a water body; the lower boundary being the mean annual low flow level, and the upper boundary being the first observable break in the slope or the mean annual flood level, whichever is lower.
NO-DISTURB ZONEThe land running 50 feet landward from an abutting resource area. No substantial activity, that will result in the building within or upon, filling, removing or altering of land, shall be permitted, with the following exceptions:
(1) Maintenance of an existing permitted structure
(2) An activity that has been expressly allowed by a variance from the Conservation Commission.
PERSONIncludes any individual, group of individuals, association, partnership, corporation, company, business organization, trust, state, the commonwealth or political subdivision thereof to the extent subject to Town bylaws, administrative agency, public or quasi-public corporation or body, this municipality, and any other legal entity, its legal representatives, agents, or assigns.
PRIVATE WATER SUPPLYAny source or volume of surface or ground water demonstrated to be in private use or shown to have potential for private use, including ground or surface water in the zone of contribution around a private well. Activities in or within 100 feet of a resource area shall not have a significant effect on the quality of a private water supply.
PUBLIC WATER SUPPLYAny source or volume of surface or ground water demonstrated to be in public use or approved for water supply pursuant to MGL c. 111, §
160, by the Department of Environmental Protection Division of Water Supply, or demonstrated to have a potential for public use, in addition to all surface and ground water in zones of contribution. Activities within 100 feet of resource areas shall not have a significant effect on the quality of a public water supply.
RARE SPECIES HABITATIncludes, without limitation, habitats for all vertebrate and invertebrate animal species and plant species listed as endangered, threatened, or of special concern by the Natural Heritage and Endangered Species Program of the Massachusetts Division of Fisheries and Wildlife, regardless of whether the site in which they occur has been previously identified by the Division.
RECREATIONAny leisure activity or sport taking place in, on, or within 100 feet of a resource area which is dependent on the resource area and its values directly or indirectly for its conduct and enjoyment. Recreational activities include, but are not limited to, the following: noncommercial fishing and shellfishing, hunting, boating, swimming, walking, painting, birdwatching and aesthetic enjoyment. Structures and activities in or within 100 feet of a resource area shall not have a significant effect on public recreational values.
STORM DAMAGE PREVENTIONThe ability of wetland soils, vegetation and physiography to prevent damage caused by water from storms, including but not limited to: erosion and sedimentation; damage to vegetation, property or buildings; or damage caused by flooding, waterborne debris or waterborne ice. Activities in or within 100 feet of a resource area shall not have a significant effect on storm damage protection.
SURFACE WATER BODYAny area where water or ice stands or flows over the surface of the ground for at least five months of any calendar year except in times of severe, extended drought as defined in appropriate section of
310 CMR. Drainage ditches, exclusive of fish runs and intermittent streams, and impoundment areas which hold or pass water only during or for short periods following storms and which, owing to their relationship to groundwater, do not support wetland vegetation, are excluded from this definition.
VERNAL POOLRefers to a seasonal freshwater body contained in a confined basin depression that holds water for a minimum of two consecutive months in most years, is free of adult fish populations, and provides breeding habitat for amphibians and invertebrates. The boundary of vernal pool habitat shall extend outward 100 feet from the mean annual high-water mark of such a depression. Vernal pools include those areas mapped and certified by the Massachusetts Natural Heritage and Endangered Species Program as well as those areas identified in the field as eligible for certification by a professional wildlife biologist or other expert.
WILDLIFE HABITATResource areas that provide breeding and nesting habitats, shelter, food and water to all plant and animal species dependent on wetlands for any portion of their life cycles. Includes resource areas identified as containing rare, threatened or endangered species as listed by the Massachusetts Natural Heritage Program. Structures and activities in or within 100 feet of any resource area shall not have a significant effect on wildlife habitat.