City of Flagstaff LID Requirement

On February 17, 2009, the Flagstaff City Council approved Ordinance No. 2009-07, which requires Low Impact Development (LID) integrated management practices (IMPs) be used to retain / infiltrate the first one inch of runoff from all impervious areas on sites that are also required to provide stormwater detention (typically sites that are greater than a fourth of an acre). 

What is LID?
LID is an ecologically friendly approach to site development and stormwater management that aims to mitigate development impacts to land, water, and air. This approach emphasizes stormwater management at the source, using small, cost-effective landscape features located at the lot level.

The goal of LID is to conserve natural ecological systems and hydrologic functions on a site through the integration of site design and planning techniques.

Specifically, LID's aims include:
  • Decentralizing and micromanaging stormwater at its source
  • Preserving open space and minimizing land disturbance
  • Incorporating natural site elements (wetlands, stream corridors, mature forests) as design elements
  • Protecting natural systems and processes (drainage ways, vegetation, soils, sensitive areas)
  • Re-examining the use and sizing of traditional site infrastructure (lots, streets, curbs, gutters, sidewalks) and customizing site design to each site.

For more information or for assistance with this program aspect, contact Christopher Palmer at this link or by phone at 928-213-2474.