The Pima County Regional Flood Control District has begun an effort to coordinate policy decisions about Low Impact Development (LID) and Green Infrastructure (GI) practices for stormwater within Pima County. An initial Planning Committee composed of water resources professionals from the Pima County Regional Flood Control District (RFCD), Pima Association of Governments (PAG), City of Tucson (COT) Office of Conservation and Sustainable Development, Watershed Management Group (WMG) and GeoSystems Analysis, Inc., formed to initiate a dialogue among local and regional jurisdictions about the management of LID and GI practices within our semi-arid environment. Looking at LID and GI in semi-arid climates is necessary because the main body of literature and policy has originated in wetter climates in the eastern United States. This effort continues through the LID Working Group which includes members of local jurisdictions, the consulting community and non-profit organizations.
LID/GI practices for stormwater can be used to improve water quality, lower urban temperatures and reduce potable water consumption. These practices reduce stress on traditional stormwater infrastructure and restore natural drainage with a variety of stacked benefits for the environment. Although different disciplines may not have formally applied practices in the name of LID, examples of LID include technologies that improve infiltration, enhance or maintain vegetation, and/or capture and reuse stormwater. On a large scale, LID/GI practices emphasize the preservation and restoration of natural landscape features. On a small scale, LID/GI practices may include porous pavements, infiltration planters, onsite rainwater harvesting or stormwater harvesting/capture in public rights-of-way, open spaces or common areas.
This page provides information about the efforts being undertaken by the District.
Below are links to items relevant to the Districts effort to coordinate LID/GI practices in Pima County. Many of the documents presented are in Adobe PDF file format. If you have not already done so, you will first need to download and install Adobe System’s free Acrobat Reader software to view the documents.