For purposes of this chapter the following definitions shall apply unless the context clearly indicates or requires a different meaning.
APPLICANT. The owner, their agent, or representative having interest in land where an application for city review of any permit, use or development is required by this chapter.
BEST MANAGEMENT PRACTICE (BMP). Practices to reduce the volume of runoff, and improve water quality, to prevent pollution of waters of the state. BEST MANAGEMENT PRACTICES are designed to reduce stormwater runoff volume, peak flows, and/or nonpoint source pollution through evapotranspiration, infiltration, detention, and filtration, and may include activities, prohibitions of practices, treatment requirements, operating procedures, and other management practices.
CHANNEL. A natural or artificial watercourse with a definite bed and banks that conducts continuously or periodically flowing water.
CONSTRUCTION ACTIVITY. Any disturbance to the land that results in a change in the topography, existing soil cover, or the existing soil topography that may result in accelerated stormwater runoff, including clearing, grading, filling, and excavating.
CONTROL MEASURE. A practice or combination of practices to control erosion and attendant pollution.
DETENTION FACILITY. A permanent natural or human-made structure, including wetlands, for the temporary storage of runoff which contains a permanent pool of water.
FLOOD FRINGE. All the land in a flood plain not lying within a delineated flood way. Land within a floodway fringe is subject to inundation by relatively low velocity flows and shallow water depths. The flood fringe includes at a minimum, the areas designated as zone AE on the Flood Insurance Rate Map outside of the floodway, except as modified on the Zoning Overlay Map.
FLOOD PLAIN, GENERAL. A 100-year flood plain area shown on the Flood Insurance Rate Map where flood way and flood fringe boundaries and/or 100-year flood elevations have not been determined. These areas include areas designated as Zone A on the Flood Insurance Rate Map and zone AE areas where a floodway is not shown.
FLOODWAY. The channel of a natural stream or river and portions of the flood plain adjoining the channel, which are reasonably required to carry and discharge the flood water or flood flow of any natural stream or river. The floodway, at a minimum, includes the floodway areas shown on the Flood Insurance Rate Map and as depicted on the Zoning Overlay Map.
HYDRIC SOILS. Soils that are saturated, flooded, or ponded long enough during the growing season to develop anaerobic conditions in the upper part.
HYDROPHYTIC VEGETATION. Macrophytic plant life growing in water, soil, or on a substrate that is at least periodically deficient in oxygen as a result of excessive water content.
IMPERVIOUS SURFACE. Any surface that prevents absorption of water into the ground. Examples of impervious surfaces include, but are not limited to, cement, asphalt, and paving brick.
LAND DISTURBING OR DEVELOPMENT ACTIVITIES. Any change of the land surface including removing vegetative cover, excavating, filling, grading, and the construction of any structure.
MAINTENANCE AGREEMENT. A document recorded against the property which provides for long-term maintenance of stormwater treatment practices.
NEW DEVELOPMENT. Any construction activity that is not defined as redevelopment.
NEW IMPERVIOUS SURFACE. Any newly constructed surface area that changes the infiltration rate from a pervious surface to that of an impervious surface.
PERSON. Any individual, firm, corporation, partnership, franchisee, and association.
PERVIOUS SURFACE. Any surface area that allows infiltration of all or the majority of the precipitation that falls on it. Pervious surfaces include turfgrass, rain gardens, planting beds, and other infiltration BMPs.
PLAN. A stormwater management plan governed by this chapter.
PUBLIC WATERS. Waters of the state as defined in M.S. § 103G.005, Subd. 15, as it may be amended from time to time.
REDEVELOPMENT. Any construction activity where, prior to the start of construction, the areas to be disturbed have 15% or more of impervious surface.
REGIONAL FLOOD. A flood which is representative of large floods known to have occurred generally in Minnesota and reasonably characteristic of what can be expected to occur on an average frequency in the magnitude of the 100-year recurrence interval. REGIONAL FLOOD is synonymous with the term BASE FLOOD used in the Flood Insurance Study.
RETENTION FACILITY. A permanent natural or human-made structure that provides for the storage of storm water runoff by means of a permanent pool of water.
SEDIMENT. Solid matter carried by water, sewage, or other liquids.
STORMWATER MANAGEMENT. The use of structural or non-structural practices that are designed to reduce stormwater runoff pollutant loads, discharge volumes, and/or peak discharge rates.
STORMWATER TREATMENT PRACTICES. Measures, either structural or nonstructural, that are determined to be the most effective and practical means of preventing or reducing point source or nonpoint-source pollution inputs to stormwater runoff and waterbodies.
STRUCTURE. Anything manufactured, constructed, or erected which is normally attached to or positioned on land, including portable structures, earthen structures, roads, parking lots, and paved storage areas.
WATERCOURSE. A permanent or intermittent stream or other body of water, either natural or fabricated, which gathers or carries surface water.
WATERSHED. The total drainage area contributing runoff to a single point.
WETLAND. Poorly drained, environmentally sensitive lands as designated by M.S. § 103G.221 et seq. known as the Wetland Conservation Act, or any other state or federal agency.
(Ord. 2017-1217, passed 7-10-17)