An Interactive, Environmental, Educational Software Package


Download it now, if you like it, please consider a donation towardthe production of more software like it.

EnviroLand has been developed by a small group of science students and faculty at Hartwick College in Oneonta, New York. This software package is the product of four years of research and development by our staff. This program contains laboratory excercises, theoretical calculations and graphs, and fate and transport models of surface water. There have been previous versions of this software. The final version, given here, is version 3.0.

We invite you to download EnviroLand and try for yourself what we believe to be an excellent teaching aide for undergraduate environmental chemistry, hydrology and geochemistry.

Any comments and suggestions concerning this software package are welcome.

This project was funded in part by The Camille and Henry Dreyfus Foundation, Inc.

Lab Experiments...

  • Alkalinity Titration

  • D.O. Determination

  • Hardness Titration

  • Ion Selective Electrode

  • BOD Determination

We suggest introducing your student to EnviroLand in your normal laboratory write-ups and as a pre-lab exercise. In the teaching of environmental chemistry labs we have used a number of write-ups, including published procedures and our own versions, and no matter how clear the procedures are to the professor, some students always overlook the important steps. The intent of EnviroLand is to simulate the laboratory experiment prior to the laboratory period.

The use of EnviroLand as a pre-lab exercise allows the student to pull out the key steps in your written precedure, and compare those to their actual experience in the lab. Two laboratory experiments, the Thomas Slope Formula method for analyzing BOD data and the Potentiometric Methods, are admittedly less interactive. These are intended to show the student how to process a typical data set and obtain appropriate data plots.

Theoretical Calculations...

  • pC-pH Diagram

  • First Order Decay Rate

Fate and Transport Models...

  • Step Release Into a Stream

  • Pulse Release Into a Stream

  • Step Release Into a Lake

  • Pulse Release Into a Lake

  • Streeter-Phelps Equation / D.O. Sag Curve

  • Step Release Into Groundwater

  • Pulse Release Into Groundwater

The fate and transport models of EnviroLand are the most versatile. We feel that it is important to force the student to make manual calculation prior to using the simulations in EnviroLand. After the student is proficient in these calculatons, we use EnviroLand to study the effects of changing stream channel dimentions, water velocities, flow rates, mass loading, reaction rates, etc. on dispersion (shape of peak or width at half maximum concentration).

The students can see for themselves the effect of physical processes such as advection and dispersion, as well as chemical processes such as reaction rate, on the pollutant transport. This approach significantly increases the number of problems that can be worked in the classroom, but still allows the student to become proficient with manual calculations.

About EnviroLand...

EnviroLand is an interactive, educational, environmental software package that is being written by science students at Hartwick College. This software package is the product of two years of research and development by our staff, and it's completion is projected sometime in the spring of the year 2000. This program currently contains laboratory exercises, complex calculations and graphs, and fate and transport models of surface water. More sections are currently under development in each of these areas and will be released within the next few months. Any questions, comments, or suggestions concerning this software package are welcome.

Project Coordinator:

Frank Dunnivant

Whitman College

Research and Concepts:

Meredith Newman

Hartwick College


Daniel Danowski


Franz Frye

Theresa Spano

Alice Timmens-Haroldson