Technical Bulletin No. 0512: A Review and Application Guidance for the McDonald-Harbaugh Groundwater Flow Model

This technical bulletin reviews and documents the McDonald-Harbaugh Numerical Flow Model. Development of the model was supported by the U.S. Geological Survey and has been available to the public since 1984. The model is a second generation finite difference flow model which contains a good measure of flexibility because of its modular code structure.