Environmental Rules in Harford County, MD (2026)
5 rules for unincorporated Harford County, Maryland.
Verified from official government sources
Stormwater Management
Harford County requires stormwater management measures on virtually every new development or redevelopment project under Code Section 214-27, enforced by the Department of Public Works. Small disturbances under 5,000 square feet, agricultural land management, and limited additions to existing single-family homes are exempt, but everything else must control runoff before the county will approve a final plat.
Harford County Stormwater Management Rules
Significant RestrictionsHarford County Code § 214-27A
No person shall develop any land for residential, commercial, industrial, institutional or governmental uses without having provided stormwater management measures that control or manage runoff from such developments, except as provided within this section. The stormwater management requirements specified in § 267 of the Harford County Code ... must also be met. In all cases of conflicting requ...
Erosion Control
Grading land in unincorporated Harford County without an approved erosion and sediment control plan is illegal under § 214-4 of the county code. The Harford Soil Conservation District must approve the plan before any land-disturbing activity begins, and violations carry criminal fines up to $10,000, civil citations up to $20,000, and stop-work orders from the Department of Public Works.
Harford County Erosion and Sediment Control
Some RestrictionsHarford County Code §§ 214-3, 214-4
§ 214-3. Applicability. ... A. Scope. No person shall disturb land without implementing soil erosion and sediment controls in accordance with the requirements of this article and the Standards and Specifications except as provided within this section. ... § 214-4. Erosion and Sediment Control Plans. ... A. Review of erosion and sediment control plans. (1) A person may not grade land without an ...
Boat Dock Permits
In unincorporated Harford County, private piers, docks, boat lifts, wharves and bulkheads built by riparian landowners are regulated as water-dependent structures. Construction, maintenance and dredging require Department of Planning and Zoning review plus state permitting before work begins.
Harford County Boat Dock Construction Rules
Some RestrictionsHarford County Code § 267-63.16A, B(2), C(2)(d)
Applicability. The provisions of this section apply to individual private piers installed or maintained by riparian landowners, which are not part of a subdivision that provides community piers, boat lifts, wharves, docks and bulkheads, as well as the maintenance, repair or replacement of these existing structures and maintenance dredging. ... Maintenance, repair or replacement of existing bulk...
Vehicle Idling Restrictions
Warehousing, distribution and local delivery centers up to 150,000 square feet in Harford County's CI, LI and GI industrial districts must include site features, amenities or signage to keep truck drivers compliant with idling laws under § 267-60C(14)(d)[2], part of the site design package added by Bill No. 23-026.
Harford County Warehouse Idling Restrictions
Light RestrictionsHarford County Code § 267-60C(14)(d)[2]
(14) Warehousing, distribution, and local delivery center uses within buildings up to 150,000 square feet may be permitted in the CI, LI and GI districts, provided that the following requirements are met: ... (d) Other requirements. [1] All access points for all warehouses shall be to and from a collector or arterial roadway, built to county standards and directly connected to the nearest colle...
Flood Elevation Requirements
New and substantially improved homes in Harford County's mapped flood hazard areas must sit above the flood protection elevation, defined as the base flood elevation plus 2 feet of freeboard. The Floodplain Administrator in the Department of Planning and Zoning will not issue a building permit in a special flood hazard area until that elevation standard, and the rest of Chapter 131, is met.
Harford County Flood Elevation & Freeboard Rules
Some RestrictionsHarford County Code §§ 131-8, 131-31A(1), 131-47
FLOOD PROTECTION ELEVATION: The base flood elevation plus 2 feet of freeboard. Freeboard is a factor of safety that compensates for uncertainty in factors that could contribute to flood heights greater than the height calculated for a selected size flood and floodway conditions, such as wave action, obstructed bridge openings, debris and ice jams, climate change and the hydrologic effect of urb...
All Harford County ordinances
See every category we cover for Harford County: parking, noise, fences, fires, animals, pools, and more.
Harford County Ordinance Hub →