N:\Planning\Applications\Natural Resource Overlay App 2017.docx Page 8
17.22.020 Requirements for Riparian Corridors
A. Purpose and Intent. The purpose of this section is to protect and restore water bodies
and their associated riparian areas, in order to protect and restore the multiple social and
environmental functions and benefits these areas provide individual property owners,
communities, and the watershed. The requirements for riparian corridors is based on the
“safe harbor” approach as defined in Oregon Administrative Rules 660-23-0090(5) and
(8). Specifically, this section is intended to;
1. Protect habitat for fish and other aquatic life,
2. Protect habitat for wildlife,
3. Protect water quality for human uses and aquatic life,
4. Protect associated wetlands,
5. Control erosion and limit sedimentation,
6. Promote recharge of shallow aquifers,
7. Provide a stream “right of way” to accommodate lateral migration of the channel and
protect the stream and adjacent properties,
8. Reduce the effects of flooding,
9. Protect open space;
10. Reserve space for storm water management facilities, other utilities, and linear parks,
and
11. Minimize the economic impact to affected property owners.
The intent is to meet these goals by modifying the location, but not the intensity of
development, where possible. The requirements excludes new structures from buffer
areas established around rivers, streams and other water bodies in Hood River and also
prohibits vegetation removal or other alteration in these buffers and establishes a
preference for native vegetation in the buffers. For cases where buffer establishment
creates a hardship for individual property owners, this section provides a procedure to
apply for a variance. In limited circumstances, changes to the buffer width shall be
allowed provided the changes are offset by appropriate restoration or mitigation, as
stipulated in this section.
The Columbia River Infill Area that is addressed under the ESEE analysis and is shown
on the Columbia River Infill Waterfront map is exempt from the Riparian Corridors
section of this chapter.
B. Definitions. The following words and phrases, unless the context otherwise requires,
shall have the meanings given them in this section.
BANKFULL STAGE means the elevation at which water overflows the natural banks of
streams or other waters and begins to inundate upland areas. Physical characteristics that
indicate the elevation include a clear, natural line impressed on the shore, a change from upland
vegetation (e.g. oak, Douglas fir) to bare soil or substrate, a change in vegetation from upland
(e.g. oak, fir) to aquatic (e.g. willows, rushes), a textural change of depositional sediment or
changes in the character of the soil (e.g. from upland soils to sand, sand and cobble, cobble
and gravel), absence of fine debris (needles, leaves, cones, seeds), the presence of water-borne
litter or debris, water-stained leaves, or water lines on tree trunks. In the absence of physical