Coastal erosion areas shall be delineated on coastal erosion
area maps.
(A) Where coastal erosion
areas are identified, such areas shall include land lakeward of the base
recession line and all land that extends landward of the base recession line
for a distance equal to the anticipated recession distance. Where anticipated
recession distances are equal to zero, a coastal erosion area shall not be
designated, either lakeward or landward of the base recession line.
(1) The landward boundary of a coastal
erosion area shall be delineated by plotting on each transect a point landward
from the base recession line equal to the anticipated recession distance as
determined in rule
1501-6-12
of the Administrative Code and then drawing straight lines between these
points(figure 1).
(2) Where one
transect has a positive anticipated recession distance and an adjacent transect
has a zero anticipated recession distance, the coastal erosion area boundary
shall be delineated as follows. A boundary line shall be drawn between the
positive anticipated recession distance on the one transect to the base
recession line position on the adjacent transect (figure 2). At the point where
the distance between the boundary line and the base recession line equals the
calculated accuracy limit, the boundary line shall turn lakeward. The lakeward
extension of the boundary line shall extend to the shoreline and shall be
spaced proportionately between the transects (figure 2).
(B) The preliminary identification of coastal
erosion areas shall be shown on recession-line base maps described in paragraph
(A) of rule
1501-6-11
of the Administrative Code as areas bounded on the lakeward side by the
shoreline and on the landward side by a line(coastal erosion area line) drawn
pursuant to paragraphs (A)(1) and (A)(2) of this rule. The base recession line
and the recession line used to determine annual recession rates and anticipated
recession distances as prescribed in paragraph (A)(4) of rule
1501-6-11
of the Administrative Code shall also be shown on the recession-line base
maps(figure 3).
See Figures at
http://www.registerofohio.state.oh.us/pdfs/1501/0/6/1501-6-13_PH_FYR_C_RU_20090729_1320.pdf
Figure 1: Anticipated recession distance measured from the base
recession line defines the land ward boundary of a coastal erosion area.
Figure 2: Example of an excluded area. Shading indicates
coastal erosion areas. Coastal erosion line turns lakeward upon intersecting
the calculated accuracy limit.
Figure 3: Example of a coastal erosion map illustrating
transects, the recession line used to determine annual recession rates (dashed
line), the base recession line, and coastal erosion line denoting the landward
extent of coastal erosion areas.
(C) Final identification of coastal erosion
areas shall be shown on the recession-line base maps described in paragraph (A)
of rule
1501-6-11
of the Administrative Code as areas bounded on the lakeward side by the
shoreline and on the landward side by a line drawn pursuant to paragraphs
(A)(1), (A)(2), and (B) of this rule. This final identification shall show the
boundaries of coastal erosion areas as they existed at the time the base-map
imagery was acquired. Subsequent to the final identification, the landward
extent of a coastal erosion area shall be determined by measuring the
anticipated recession distance from the current base recession line defined in
paragraph (R) of rule
1501-6-10 of the
Administrative Code. Recession rates and anticipated recession distances shall
be provided by the department of natural resources with coastal erosion area
maps.
R.C. 119.032 review dates: 07/29/2009
and 07/25/2014
