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. Hydrologic Modeling Community of Practice

WASP Model Documentation

This model is being distributed, maintained and actively supported by EPA.

WASP Model Menu
  • WASP Model Home
  • WASP8 Download
  • WASP FAQ
  • WASP Documentation
  • WASP Tutorials
  • WASP Example Files
  • WASP Release Notes

WASP8 Model documentation for

  • Water Transport
  • Sediment Transport
  • Eutrophication
  • Macro Algae and Periphyton
  • Sediment Diagenesis
  • Water Temperature
  • pH and Alkalinity
  • Light

  • WASP8 Water Transport (pdf) (1.63 MB, June 8, 2017)
    Provides overview and governing equations for advective flow options in WASP including: Flow Routing, Kinematic Wave, Dynamic Wave, Hydrodynamic Linkage
  • WASP8 Sediment Transport (pdf) (965.43 KB, June 19, 2017)
    Provides overview and governing equations for descriptive and predictive (mechanistic) sediment transport
  • WASP8 Multiple Algae Model Theory User Guide (pdf) (283.97 KB)
    Provides overview and governing equations for multiple algal groups and nutrient cycle
  • WASP8 Macro Algae Model Theory User Guide (pdf) (1.32 MB)
    Provides overview and governing equations for macro algae and periphyton
  • WASP8 Sediment Diagenesis Routines (pdf) (923.63 KB)
    Provides overview and governing equations for sediment diagenesis module
  • WASP8 Water Temperature Heat Model (pdf) (860.6 KB)
    Provides overview and governing equations water temperature module
  • WASP Model pH Release Notes (pdf) (309.8 KB)
    Provides overview and governing equations pH and Alkalinity Module
  • WASP8 Light Module (pdf) (610.42 KB)
    Provides overview and governing equations light module

Hydrologic Modeling Community of Practice

  • Modeling Products
  • Groundwater Models
  • Surface Water Models
  • Food Chain Models
  • Multimedia Models
  • Data Provisioning and Modeling Tools
  • Information Sources
    • About This Website
    • Frequent Questions
    • Related Links
    • Distribution and Support Policy
Contact Us About Community of Practice
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on March 6, 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.