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3 <br /> <br />BLUFF A topographic feature such as a hill, cliff, or embankment having all of <br />the following characteristics: <br />part or all of the feature is located in a shoreland area; <br />the slope rises at least 25 feet above the ordinary high water level of the <br />waterbody; <br />the grade of the slope from the toe of the bluff to a point 25 feet or more <br />above the ordinary high water level averages 30 percent or greater; and <br />the slope must drain toward the waterbody. <br />An area with an average slope of less than 18 percent over a distance for 50 <br />feet or more shall not be considered part of the bluff. <br />BLUFFLINE A line delineating the top of th e bluff connecting the points at which the <br />angle of ascent becomes less than twelve percent (12%). More than one (1) <br />bluffline may be encountered. <br /> <br />COMMISSION The City of New Brighton Planning Commission. <br /> <br />COMMISSIONER The Commissioner of the Department of Natural Resources of the State of <br />Minnesota. <br /> <br />DEVELOPMENT The making of any material change in the use or appearance of any <br />structure or land including reconstruction; alteration of the size of any <br />structure; alteration of the land; alteration of a shore or bank of a river, <br />stream, lake or pond; a commencement of drilling (except to obtain soil <br />samples); mining or excavation; demolition of a structure; clearing of land <br />as an adjunct to construction; deposit of refuse, solid or liquid waste, or fill <br />on a parcel of land; the dividing of land into two (2) or more parcels. <br /> <br />IMPERVIOUS <br />SURFACE <br />A constructed hard surface that either prevents or retards the entry of water <br />into the soil, and causes water to run off the surface in greater quantities <br />and at an increased rate of flow than existed prior to development. <br />Examples include rooftops, sidewalks, patios, decks, driveways, parking <br />lots, storage areas, and concrete, asphalt, or gravel roads. <br /> <br />NATURAL <br />ENVIRONMENT <br />LAKES <br />Generally small, often shallow lakes with limited capacities for assimilating <br />the impacts of development and recreational use. They often have adjacent <br />lands with substantial constraints for development such as high water <br />tables, exposed bedrock, and unsuitable soils. These lakes, particularly in <br />rural areas, usually do not have much existing development or recreational <br />use. <br /> <br />ORDINARY <br />HIGH WATER <br />LEVEL (OHWL) <br />The boundary of public waters and wetlands, and shall be an elevation <br />delineating the highest water level which has been maintained for a <br />sufficient period of time to leave evidence upon the landscape, commonly <br />that point where the natural vegetation changes from predominantly aquatic <br />to predominantly terrestrial. For watercourses, the ordinary high water level <br />is the elevation of the top of the bank of the channel. <br /> <br />Comment [DP4]: If the term Toe of the Bluff is <br />going to be used, please define it. <br />Comment [DP5]: Top of Bluff isn’t defined <br />either. Either include a definition for Top of Bluff or <br />you could delete the highlighted portion and the <br />definition would still makes sense. <br />Comment [DP6]: DNR considers decks to be <br />impervious, but they are not specifically called out <br />in the State Rules as impervious surface. DNR <br />recommends including decks as impervious surface. <br />Comment [JS7]: There is also a description for <br />NE, RD, and GD lakes on the DNR website that could <br />be used: <br />http://www.dnr.state.mn.us/waters/watermgmt_se <br />ction/shoreland/lake_shoreland_classifications.html <br /> <br />