Approaches to verification of two-dimensional water quality models
- Tennessee Valley Authority, Chattanooga, TN (USA). Water Quality Dept.
The verification of a water quality model is the one procedure most needed by decision making evaluating a model predictions, but is often not adequate or done at all. The results of a properly conducted verification provide the decision makers with an estimate of the uncertainty associated with model predictions. Several statistical tests are available for quantifying of the performance of a model. Six methods of verification were evaluated using an application of the BETTER two-dimensional water quality model for Chickamauga reservoir. Model predictions for ten state variables were compared to observed conditions from 1989. Spatial distributions of the verification measures showed the model predictions were generally adequate, except at a few specific locations in the reservoir. The most useful statistics were the mean standard error of the residuals. Quantifiable measures of model performance should be calculated during calibration and verification of future applications of the BETTER model. 25 refs., 5 figs., 7 tabs.
- Research Organization:
- Tennessee Valley Authority, Chattanooga, TN (USA). Div. of Water Resources
- Sponsoring Organization:
- TVA
- OSTI ID:
- 6403923
- Report Number(s):
- TVA/WR/WQ-90/26; ON: DE91005458
- Country of Publication:
- United States
- Language:
- English
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