These regulations are designed to govern construction, reconstruction, repair, or alteration of a dam, reservoir, or waterway obstruction or any change of the course, current, or cross section of a stream or body of water within the State including any changes to the 100-year frequency floodplain of free-flowing waters. Free-flowing waters do not include State or private wetlands or areas subject to tidal flooding. For purposes of these regulations, the landward boundaries of any tidal waters shall be deemed coterminous with the wetlands boundary maps adopted pursuant to Environment Article, §16-301, Annotated Code of Maryland.

Authority: Environment Article, §§1-404 and 5-501—5-514, Annotated Code of Maryland

Effective date: August 11, 1978 (5:16 Md. R. 1256)

Regulation .09E amended as an emergency provision effective June 23, 1980 (7:14 Md. R. 1345); adopted permanently effective November 9, 1980 (7:22 Md. R. 2072)

Chapter revised effective November 3, 1986 (13:22 Md. R. 2396)

Regulation .03 amended effective June 29, 1987 (14:13 Md. R. 1471)

Regulation .05B amended effective August 8, 1988 (15:16 Md. R. 1913)

Regulation .11B amended effective October 16, 1989 (16:20 Md. R. 2180)

Regulations .14 and .15 adopted as an emergency provision effective October 10, 1989 (16:25 Md. R. 2704); emergency status expired December 31, 1990 (17:8 Md. R. 969)

Chapter recodified from COMAR 08.05.03 to COMAR 26.17.04, June 1996

Regulation .03 amended as an emergency provision effective October 22, 1996 (23:23 Md. R. 1551); emergency status extended at 24:13 Md. R. 929

Regulation .03 amended effective December 1, 1997 (24:24 Md. R. 1672)

Regulation .05 amended effective October 2, 2000 (27:19 Md. R. 1733)

Regulation .05B, G amended effective June 14, 2021 (48:12 Md. R. 475)

Regulation .10 repealed and new Regulation .10 adopted as an emergency provision effective October 22, 1996 (23:23 Md. R. 1551); emergency status expired April 22, 1997

Regulation .10 amended effective June 18, 2018 (45:12 Md. R. 620)