Nicholas Institute for Environmental Policy Solutions
Ecosystem Service Logic Model

Stormwater Management – Gray Infrastructure

Geographic Context
Project Type
Stormwater Management – Gray Infrastructure

Grey infrastructure for stormwater management refers to a network of water retention and purification infrastructure (such as pipes, ditches, swales, culverts, and retention ponds) meant to slow the flow of stormwater during rain events to prevent flooding and reduce the amount of pollutants entering waterways.

Restoration projects for grey infrastructure typically do not focus on the entire stormwater management system, but rather on enhancing, repairing, removing, or installing new infrastructure in ways that will optimize the efficiency of the system and reduce the likeliness of flooding or polluting waterways during and after storm events. As such, restoration projects can focus on the repair or maintenance of, addition, or removal of ditches, weirs, culverts, storm drains, and stormwater retention ponds/basins. These interventions can also restore hydrological pathways.

Outcomes & Metrics

Outcomes for project types may be strongly or weakly linked, or if not labeled as such, not designated. Resilience-linked outcomes are marked with "R."

See all GEMS metrics, including full descriptions. Click on any metric below to jump directly to its details.

Strongly-linked outcomes:


Project Metrics

Program Metrics


Economic Activity - Local Business (R)


Economic Activity - Restoration/Intervention (R)


Human Health - Mental Health & Psychological Well-Being (R)


Water System Costs - Wastewater Treatment Costs