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Prince George's County, MD Environmental Rules: Boat Dock Permits (2026)

Significant Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified August 2026

Key Facts

Governing chapter
Subtitle 5B, Chesapeake Bay Critical Area
Excluded structures
Individual private riparian piers, non-subdivision
Slip cap formula (I-D-O/L-D-O)
1 slip per 50 ft of shoreline
Slip cap formula (R-C-O)
1 slip per 300 ft of shoreline
Marina sanitary standard
COMAR 26.04.02

Summary

In the Chesapeake Bay Critical Area buffer, Prince George's County caps community pier and marina slip counts by shoreline length or lot count and requires marinas to meet state sanitary standards. Individual private piers built by riparian landowners outside a subdivision are excluded from this section.

These county ordinances apply to unincorporated areas of Prince George's County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

Water dependent facilities include, but are not limited to, ports, the intake and outfall structures of power plants, water-use industries, and marinas and other boat docking structures, public beaches and other public water-oriented recreation areas, and fisheries activities. Excluded from this regulation are individual private piers installed or maintained by riparian landowners, and which are not part of a subdivision that provides community piers.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 2026 Update 2).

Full Breakdown

County Code Subtitle 5B, the Chesapeake Bay Critical Area chapter, governs water-dependent facilities including marinas and other boat docking structures in the Critical Area Buffer (Sec. 5B-118(a)). The section expressly excludes individual private piers installed or maintained by riparian landowners that are not part of a subdivision providing community piers, so a single homeowner's private dock outside a shared community system falls outside this regulation. 02 and must establish a way to minimize discharge of bottom wash water into tidal waters (Sec. 5B-118(g)). Community piers must be community-owned, built for the benefit of a platted riparian subdivision's residents, may not sell food, fuel, or goods, and must disturb the Buffer only enough to provide a single point of access; if community piers or moorings are provided, private piers in that development are barred (Sec.

5B-118(h)). The number of slips is capped at the lesser of a shoreline-length formula, one slip per 50 feet of shoreline in Intensely Developed and Limited Development zones or one slip per 300 feet in Resource Conservation zones, or a schedule tied to the number of platted lots or dwellings, ranging from one slip per lot for up to 15 lots down to 75 slips or 15%, whichever is greater, for subdivisions over 300 lots (Sec. 5B-118(i)). Applicants must show the proposal will not significantly alter water circulation or salinity, that the water body has adequate flushing, and that disturbance to wetlands, aquatic habitat, and shellfish beds is minimized (Sec. 5B-118(e)).

Violations & Fines

Subtitle 5B's Critical Area standards are enforced through the County's permitting process; an application that cannot meet the water-dependency, water-quality, and slip-density standards of Sec. 5B-118 is denied, and any structure built without the required approvals in the Buffer is subject to the general Subtitle 5B enforcement and grading/building permit requirements that apply to Critical Area development.

Frequently Asked Questions

Do I need Critical Area approval for a private dock at my house?
Sec. 5B-118(a) excludes individual private piers installed or maintained by riparian landowners from this section, as long as the pier is not part of a subdivision that provides community piers. Community and marina docks still fall under the section's standards.
How many boat slips can a waterfront subdivision build in the Critical Area?
Sec. 5B-118(i) caps slips at the lesser of a shoreline formula, one slip per 50 feet of shoreline in Intensely Developed or Limited Development zones or one per 300 feet in Resource Conservation zones, or a schedule based on the number of platted lots or dwellings in the subdivision.
Can an existing marina expand in a Resource Conservation zone?
Sec. 5B-118(g) allows expansion of an existing marina within a Resource Conservation Overlay zone only if it is sufficiently demonstrated the expansion will not adversely affect water quality and will produce an overall net water-quality improvement at or leaving the site.

Sources & Official References

Other rules in Prince George's County

All Prince George's County rules

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