Portland City Code ch. 14 (Land Use Code)

Citation: Portland City Code ch. 14 (Land Use Code)
Jurisdiction: Portland (municipal)
Source: Official source
Original Source: https://content.civicplus.com/api/assets/a5dcd1dc-4117-40b3-b3da-74a56919e14b... ↗

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sedimentation control contained in Subsection 4. Ditch relief culverts shall be sufficiently
11.4.4. sized and properly installed in order to
E. Road and driveway grades shall be no greater allow for effective functioning, and their
than 10% except segments of less than 200 inlet and outlet ends shall be stabilized
feet. with appropriate materials.
F. In order to prevent road and driveway surface 5. Ditches, culverts, bridges, dips, water
drainage from directly entering water bodies, turnouts, and other storm water runoff
tributary streams, or wetlands, roads and control installations associated with roads
driveways shall be designed, constructed, and and driveways shall be maintained on a
maintained to empty onto an unscarified buffer regular basis to assure effective
strip at least 50 feet plus two times the average functioning.
slope in width between the outflow point of the
ditch or culvert and the normal high-water line
of a water body, tributary stream, or upland