Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

HTTPS

Secure .gov websites use HTTPS
A lock (LockA locked padlock) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

    • Environmental Topics
    • Air
    • Bed Bugs
    • Cancer
    • Chemicals, Toxics, and Pesticide
    • Emergency Response
    • Environmental Information by Location
    • Health
    • Land, Waste, and Cleanup
    • Lead
    • Mold
    • Radon
    • Research
    • Science Topics
    • Water Topics
    • A-Z Topic Index
    • Laws & Regulations
    • By Business Sector
    • By Topic
    • Compliance
    • Enforcement
    • Laws and Executive Orders
    • Regulations
    • Report a Violation
    • Environmental Violations
    • Fraud, Waste or Abuse
    • About EPA
    • Our Mission and What We Do
    • Headquarters Offices
    • Regional Offices
    • Labs and Research Centers
    • Planning, Budget, and Results
    • Organization Chart
    • EPA History

Breadcrumb

  1. Home
  2. Causal Analysis/Diagnosis Decision Information System (CADDIS)

Simple and Detailed Conceptual Model Diagram Downloads

Click on the links below to download conceptual model diagrams.
 

  • Ammonia: Detailed Conceptual Diagram (pdf) (97.29 KB)
  • Ammonia: Simple Conceptual Diagram (pdf) (98.45 KB)
  • Dissolved Oxygen: Detailed Conceptual Diagram (pdf) (109.24 KB)
  • Dissolved Oxygen: Simple Conceptual Diagram (pdf) (95.09 KB)
  • Flow Alteration: Detailed Conceptual Diagram (pdf) (105.55 KB)
  • Flow Alteration: Simple Conceptual Diagram (pdf) (82.77 KB)
  • Herbicides: Simple Conceptual Diagram (pdf) (104.75 KB)
  • Herbicides: Detailed Conceptual Diagram (pdf) (91.65 KB)
  • High pH: Simple Conceptual Diagram (pdf) (70.44 KB)
  • High pH: Detailed Conceptual Diagram (pdf) (86.69 KB)
  • Ionic Strength: Detailed Conceptual Diagram (pdf) (85.79 KB)
  • Ionic Strength: Simple Conceptual Diagram (pdf) (67.55 KB)
  • Insecticides: Detailed Conceptual Diagram (pdf) (89.83 KB)
  • Insecticides: Simple Conceptual Diagram (pdf) (74.39 KB)
  • Low pH: Detailed Conceptual Diagram (pdf) (99.83 KB)
  • Low pH: Simple Conceptual Diagram (pdf) (71.7 KB)
  • Metals: Detailed Conceptual Diagram (pdf) (91.95 KB)
  • Metals: Simple Conceptual Diagram (pdf) (74.11 KB)
  • Nitrogen: Detailed Conceptual Diagram (pdf) (97.17 KB)
  • Nutrients: Simple Conceptual Diagram (pdf) (56.85 KB)
  • Phosphorus: Detailed Conceptual Diagram (pdf) (93.95 KB)
  • Physical Habitat: Detailed Conceptual Diagram (pdf) (83.67 KB)
  • Physical Habitat: Simple Conceptual Diagram (pdf) (76.47 KB)
  • Sediments: Detailed Conceptual Diagram (pdf) (96.68 KB)
  • Sediments: Simple Conceptual Diagram (pdf) (79.79 KB)
  • Temperature: Detailed Conceptual Diagram (pdf) (90.89 KB)
  • Temperature: Simple Conceptual Diagram (pdf) (73.35 KB)
  • Unspecified Toxic Chemicals: Detailed Conceptual Diagram (pdf) (119.54 KB)
  • Unspecified Toxic Chemicals: Simple Conceptual Diagram (pdf) (106.52 KB)

Causal Analysis/Diagnosis Decision Information System (CADDIS)

  • CADDIS Home
    • About CADDIS
    • Frequent Questions
    • Publications
    • Recent Additions
    • Related Links
    • CADDIS Glossary
  • Volume 1: Stressor Identification
    • About Causal Assessment
    • Getting Started
    • Step 1. Define the Case
    • Step 2. List Candidate Causes
    • Step 3. Evaluate Data from the Case
    • Step 4. Evaluate Data from Elsewhere
    • Step 5. Identify Probable Causes
  • Volume 2: Sources, Stressors and Responses
    • About Sources
      • Urbanization
    • About Stressors
  • Volume 3: Examples and Applications
    • Analytical Examples
    • Worksheet Examples
    • State Examples
    • Case Studies
    • Galleries
  • Volume 4: Data Analysis
    • Selecting an Analysis Approach
    • Getting Started
    • Basic Principles & Issues
    • Exploratory Data Analysis
    • Basic Analyses
    • Advanced Analyses
    • PECBO Appendix
    • Download Software
    • Data Analysis Topics (A -Z)
  • Volume 5: Causal Databases
    • Learn about CADLink
Contact Us about CADDIS
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on February 7, 2025
  • Assistance
  • Spanish
  • Arabic
  • Chinese (simplified)
  • Chinese (traditional)
  • French
  • Haitian Creole
  • Korean
  • Portuguese
  • Russian
  • Tagalog
  • Vietnamese
United States Environmental Protection Agency

Discover.

  • Accessibility Statement
  • Budget & Performance
  • Contracting
  • EPA www Web Snapshot
  • Grants
  • No FEAR Act Data
  • Plain Writing
  • Privacy
  • Privacy and Security Notice

Connect.

  • Data
  • Inspector General
  • Jobs
  • Newsroom
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

  • Contact EPA
  • EPA Disclaimers
  • Hotlines
  • FOIA Requests
  • Frequent Questions
  • Site Feedback

Follow.