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- i Attribute Codes (continued) Sin,le-Po nt _____ _ Major ~ 430 Minor ~ 035l DE!scriDtor River Mile/ l,OOO-Foot Marker 430 General Purnose Attribute Coo A 430 430 430 430 10/93 I I I \ I ~ 0406 0418 0435 0436 0466 Dam or Weir Culvert Levee Crown/ Floodwall Road on Levee Coastal Hard Point Comments This code identifiE,s a degenerate line that represents the locB.tion of a point at the centerline of a st:!'eam. Note: There are a number of these points evenly spaced (i~. miles or l,OOO-foot intervals) along the length of a stream. This feature is identified with parameter code 436 00-- if a l,OOO-foot marker, and parameter code 437 00-- if a river mile marker. A decimal fraction (parameter code 434 00 _ _) may be included as part of the identific~tion code. It is shown by FIS symbol P30l. This code identifies a dam or weir. It may be shown to scale as an outline or symbolized as a single line. If outlined, only its outline carries the attribute code. It is shown by FIS symbol L2l4. This code identifie$ a structure built to contain the flow of a stream, usually passing under a road or railroad, or through an e..bankment. It is graphically shown as replacing the streamline and may contain the flooding. It is shown by FIS symbol L216. Wingwalls are not dLgitized. This code identifie" a structure usually buil t alongside a ri.ver or along the coastline of a large body of water to prevent high water from floc, ding adjacent land. It is shown by FrS symbol L217. This code identifies a levee or floodwall on top of which a road has been built. This structure is usually built alongside a river or along the coastline of a large body of water to prevent high water from flooding adjacent land. It is shown by FIS symbol L221. This code identifies a structure such as a jetty, breakwater, or pier, built out from a shoreline. It is shown by FIS symbol L2l8. 34