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Environmental Modeling Community of Practice

Evapotranspiration Calculator Desktop Tool

The Evapotranspiration Calculator estimates evapotranspiration time series data for hydrological and water quality models. The tool was developed specifically for the Hydrologic Simulation Program - Fortran (HSPF) and the Stormwater Management Model (SWMM), but can be used with other models if they use time series ET data as input.

Current Version: 1.0 Pre-release
Release Date: January 2016
Development Status: Pre-Release
Development Information: A revised release notes will be included with the final ET Tool release.
Operating System: Windows 7, or Windows 8, or Windows 10
Development Language: C#
Intended Audience: Evapotranspiration modelers, watershed scientists
Key Words: evapotranspiration, et tool, hamon, morton, penman-montieth daily, penman-montieth hourly, priestly-taylor, shuttleworth-wallace, class-a pan penpan, open surface penman, granger-gray, morton-crwe, mcjannett-penman-montieth, NLDAS, GLDAS,
Related Web Sites:
Text Files (ASCII Format)
File Name File Description
abstract.txt will be added later Summary of functions, theory, and applicability.
readme.txt will be added later

installation instructions.

  • Extract the ETModels folder onto your C:\Tools\ directory.
  • Open the ETModels project in Visual Studio 2013.
  • Run the executable from the folder ETModels\ETToolsDesktop\bin\Debug\ETModelsDesktop.exe
Download Files
File Type /
File Name /
Format /
File Description
Install /
 ET Tool /
Zipped file /
Setup file for version 1.0 of the desktop tool. This zip file is located on www3 during internal and external review. It will be uploaded into Drupal once the review is passed.