DOEE details High-Impact Stormwater Retention Credits for District properties

The District Department of Energy & Environment has published guidance on High-Impact Stormwater Retention Credits (HISRC), a District program that outlines how property projects that retain stormwater can generate credits to address regulatory retention requirements. The guidance is posted on the city’s official website and is aimed at owners, developers, and project teams across Washington, D.C.

The HISRC framework describes eligibility pathways for projects that capture and retain stormwater on-site beyond baseline expectations. It sets out administrative steps for documenting retention, calculating credit quantities, and applying credits toward compliance with stormwater retention obligations tied to development and redevelopment in the District.

How the credit guidance works

Under the new guidance, property owners will need to demonstrate that planned or completed stormwater management practices meet the program’s standards for retention to qualify for credits. The guidance explains documentation requirements, monitoring expectations, and the technical measures used to verify retention performance. It also provides a process for submitting project information to the District for review and credit issuance.

DOEE’s materials highlight the kinds of practices that typically generate retention — such as green infrastructure, permeable surfaces, and on-site detention — and emphasize performance-based measurement rather than prescriptive design alone. The guidance is intended to make it clearer how investments in on-site stormwater management translate into compliance value for projects across DC neighborhoods.

Who is affected in the District

The HISRC guidance applies to private property owners, commercial and residential developers, and public projects that need to meet the District’s stormwater retention rules. Because stormwater requirements shape site design and permitting in multiple neighborhoods, the program could affect developments across Ward areas and utility planning tied to the District’s combined sewer and stormwater systems.

DOEE frames the credits as a tool to encourage higher-performing stormwater systems and to provide flexibility in how developers meet regulatory obligations. Property owners who invest in retention measures may be able to reduce future compliance costs or accelerate permitting by documenting creditable performance under the HISRC procedures.

Implementation and next steps

The guidance includes application steps and technical documentation expectations that project teams must meet to receive credits. It also signals how credits will be tracked and recorded by the District once issued. DOEE expects applicants to follow the specified verification routines so that retention is measurable and auditable over time.

City agencies, permit reviewers, and development teams will be watching how the new guidance is applied in early projects to ensure clarity and consistent administration. Local designers and consultants who specialize in green infrastructure and stormwater management will likely adjust project planning to take advantage of the credit framework.

For residents and neighborhood stakeholders, the guidance aims to encourage site-level investments that reduce runoff, lower pressure on the city’s drainage and sewer systems, and improve water quality in local waterways.

What to watch next: DOEE’s rollout and the first batch of approved credits — including how strictly the verification requirements are applied and whether credit issuance changes permitting timelines for major projects in the District.