Section R. 281.817 - Minor drainage structures and facilitiesRule 7. All of the following structures are minor drainage structures and facilities that do not require a permit under section 30103(f) of the act:
(a) Cross road culverts that serve only to equalize the existing water surfaces at the ends of the culvert.(b) Cross road culverts constructed to continue the existence of drainage courses other than inland lake and streams.(c) Roadside ditches which serve to convey storm water runoff from the highway right-of-way and which do not serve as a stream.(d) Standard appurtenances, including riprap or other shore protection, for storm water runoff facilities, such as manholes, catch basins, headwalls, and outlets from offline water retention/detention systems.Mich. Admin. Code R. 281.817