Home      About      Contact      Submit an Item      
Passive    Active    Residential    Commercial    Wind    Projects    DIY    Resources    Tools    Materials    
Watch Farmers Market Blacksburg VA Profile Thumbnail

Farmers Market Blacksburg VA Profile Video


Watch Ck Choi Bldg at University BC Thumbnail

CK Choi Bldg University BC Video


Watch Napa Valley Solar Wine Thumbnail

Napa Valley Solar Wine Video


  

 

 

 

Resource

National Green Values™ Calculator

Compare low impact development to conventional stormwater partices

The National Green Values™ Calculator is a tool for quickly comparing the performance, costs, and benefits of Green Infrastructure, or Low Impact Development (LID), to conventional stormwater practices. The GVC is designed to take you step-by-step through a process of determining the average precipitation at your site, choosing a stormwater runoff volume reduction goal, defining the impervious areas of your site under a conventional development scheme, and then choosing from a range of Green Infrastructure Best Management Practices (BMPs) to find the combination that meets the necessary runoff volume reduction goal in a cost-effective way.