Title: Causal Analysis/Diagnosis Decision Information System (CADDIS) 
Resource Type: web links 
Availability: CADDIS is a web based resource available at the USEPA website 
Producers or distributor US Environmental Protection Agency - EPA 
Author / Producer Type: Agency, regulator or other governmental or inter-governmental body 
Web link for product information: http://www.epa.gov/caddis  
EUGRIS Keyword(s): Contaminated land-->Risk assessment-->Receptor: Water
Diffuse pollution-->Diffuse pollution overview
Diffuse pollution-->Monitoring
Diffuse pollution-->Sources
Groundwater protection-->Monitoring-->Early warning systems
Groundwater protection-->Monitoring-->Monitoring overview
Water and sanitation-->Water and sanitation Overview
Water resources and their management -->Stresses, quality and ecological status
Water resources and their management -->Water resources and their management Overview
 
Short description: CADDIS is an online application that helps scientists and engineers find, access, organize, use and share information to conduct causal evaluations in aquatic systems. 
Long description: The United States EPA has released a new web-based tool, the Causal Analysis/Diagnosis Decision Information System (CADDIS), which simplifies determining the cause of contamination in impaired rivers, streams and estuaries, a water body that does not meet the state or federal water quality standards for one or more pollutants. There are many possible sources of pollution such as industrial waste, municipal sewage, agricultural runoff, naturally occurring minerals in rock and sand, and biological materials. Before restorative or remedial actions can be taken, the cause of impairment must be determined. CADDIS provides a standardized and easily accessible system to help scientists find, use and share information to determine the causes of aquatic impairment. Causal analyses look at stressor-response relationships, meaning the effect of a specific substance or activity on the environment, such as excess fine sediments, nutrients, or toxic substances. This version of CADDIS is the first of three. Future versions will include modules to quantify stressor-response relationships, and databases and syntheses of relevant literature on sediments and toxic metals. CADDIS is available on theEPA Website: http://www.epa.gov/caddis 
Link to News Items(s):   USEPA releases on line tool for Determining Cause of Ecological Harm to Rivers and Streams
USEPA releases on line tool for Determining Cause of Ecological Harm to Rivers and Streams
Submitted By: Dr Antony Chapman WhoDoesWhat?      Last update: 02/03/2006