August Dane County Code of Ordinances

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1 1.20 Dane County Code 2a"64 (c) Base Flood. A flood having a one per- (j) Encroachment. An encroachment is any cent chance of being equalled or exceeded in fill, structure, building, accessory use, use or any given year. (See also regional flood). development in the floodway. (d) Base Flood Elevation. An elevation (k) Encroachment/Floodway Lines. En- equal to that which reflects the height of the croachment lines are limits of obstruction to - base flood as defined in(c) above. flood flows. These lines are on both sides of and generally parallel to the stream. The _ (e) Board of Adjustment. The body estab- lines are established by assuming that the lished under Chapter 59.99, Wisconsin Stat- area landward (outside) of the encroachment utes, for counties and designated "board of lines will be ultimately developed in such a adjustment." way that it will not be available to convey flood flows. (ea) Boathouse. A building for the storage of boats, canoes and other watercraft and (I) Equal Degree of Hydraulic Encroach- their accessories. - ment.' The effect of any encroachment into the floodway must be computed by assum- r ing an equal. degree of hydraulic encroach- a(f) Bulkhead Line. A geographic line along g. q g a reach of a navigable body of water that has ment on the other side of a river or stream been adopted by a municipal ordinance and for a significant hydraulic reach. This com- ' • approved by the Department of Natural Re- putation assures that property owners up, sources pursuant to Section 30.11, Wiscon- down or across the river or stream will have --- sin Statutes, and which allows complete fill- the same rights of hydraulic encroachment. ing on the landward side except where such Encroachments are analyzed on the basis of filling is prohibited by the floodway provi- the effect upon hydraulic conveyance, not sions of this ordinance. upon the distance the encroachment extends into the floodway. ; (g) Certificate of Compliance. A certifica- (m) Existing Mobile Homes Park or Mo- tion by the zoning administrator that a bile Home Subdivision. Means a parcel (or structure, use, or development is in compli- - contiguous parcels) of land divided into two ance with all provisions of this ordinance. or more mobile home lots for rent or sale for which the construction of facilities for serv- - (h) Channel. A channel is a natural or arti- ;sing the lot on which the mobile home is to fecal watercourse with definite bed and banks be affixed (including, at a minimum, the in- to confine and conduct the normal flow of stallation of utilities, either final site grading water. or the pouring of concrete pads, and the con- (ha) DNR. The Department of Natural Re- struction of streets) is completed before the effective date of flood plain management sources. regulations adopted by a community. (i) Development. Any man-made change (n) Flood or Flooding. A 'general and tem- to improved or unimproved real estate, in- ovary condition of partial or complete eluding but not limited to construction of or inundation of normally dry land areas from additions or substantial improvements to the overflow of inland waters or the unusual buildings. Other structures, or accessory uses, and rapid accumulation of runoff of surface the placement of mobile homes, mining, waters from any source. dredging, filling, grading, paving, excavation or drilling operations, deposition of materi- (o) Flood Fringe. The flood fringe is that als. . portion of the flood plain outside of the floodway, which is covered by flood waters (ia) Drainage System. One or more arti- during the regional flood; it is generally as- facial ditches,' tile drains or similar devices sociated with standing water rather than. which collect surface runoff or groundwater rapidly flowing water. and convey it to a point of discharge. Supp.No.4,4-84