MD SB687

Maryland Department of the Environment must establish a flood risk review process for areas identified as at risk of tidal or nontidal flooding, applying to all development-related plans and permits in those areas

Reviews must evaluate cumulative impacts of past, present, and foreseeable development on downstream flooding, including effects on stormwater conveyance, storage, and infiltration capacity

Department must use climate-adjusted precipitation data and land use trends from the Advancing Stormwater Resiliency in Maryland Initiative to assess flood risks

Department can condition, modify, or deny permits if proposed development would increase downstream flood hazards, impair watershed-scale flood management strategies, or conflict with stormwater quantity standards

Final flood risk determinations are binding on local approving authorities and must be incorporated into local stormwater management approval processes; effective October 1, 2026