Screening LID options

From LID SWM Planning and Design Guide
Jump to navigation Jump to search

Process for selecting a suite of LID Options[edit]

Process Diagram for Screening LID Options

Site Conditions[edit]

Define Design Criteria[edit]

A detailed description of the design criteria that need to be defined is provided in the

respective CVC and TRCA Stormwater Management Criteria documents. If outside jurisdictional

boundaries, criteria developed should have requirements to:


  • preserve groundwater and baseflow characteristics;
  • prevent undesirable and costly geomorphic changes in the watercourse;
  • prevent any increases in flood risk potential;
  • protect water quality; and ultimately,
  • maintain an appropriate diversity of aquatic life and opportunities for human uses


The design criteria required to protect, enhance or restore the environmental resources

can be grouped under the following five categories.

  • Flood Protection;
  • Water Quality;
  • Erosion Control;
  • Recharge; and
  • Natural Heritage Systems or green infrastructure

Screen LID Options[edit]

Structural Requirements or Site Constraints[edit]

Performance Requirements[edit]

Operations and Maintenance Requirements[edit]

Life Cycle Costing Requirements[edit]

Select LIDs (Conceptual Design)[edit]

Assess Effectiveness[edit]

Meets Design Criteria[edit]

Proceed to Detailed Design[edit]