One-dimensional reservoir-lake temperature and dissolved oxygen model
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Abstract
This report describes and documents a one-dimensional computer model that predicts dissolved-oxygen and temperature profiles in a lake or reservoir. Downstream release dissolved-oxygen concentrations and temperatures also are computed based on a user-specified outflow withdrawal elevation. The model can, therefore, be used to compare top-draw versus bottom-draw outlet configuration effects on downstream dissolved-oxygen and temperature conditions.
The dissolved-oxygen and temperature profiles are computed for a conceptual vertical water column located at the deepest point in the lake or reservoir.. The water column is divided into a series of uniform thickness horizontal layers for computation purposes. The model operates on a daily simulation interval, with summary output given for each day and detailed depth profiles printed on user-specified days. Model options allow the simulation of 5-day biochemical oxygen demand, sediment oxygen demand, and the density current effects of inflowing suspended sediment.
The model is a modification of the U.S. Army Corps of Engineer's "WESTEX" model number 722-F5-E1011. The user-specified withdrawal elevation, dissolved oxygen, biochemical oxygen demand, sediment oxygen demand, and suspended sediment simulation capabilities were not present in the earlier "WESTEX" model. The model is capable of simulating a stratified reservoir pool environment.
This reservoir-lake model is most applicable to preliminary or reconnaissance studies of a proposed impoundment. Other more complex and accurate models exist to model existing lakes or reservoirs where onsite data can be collected.
Suggested Citation
House, L.B., 1981, One-dimensional reservoir-lake temperature and dissolved oxygen model: U.S. Geological Survey Water-Resources Investigations Report 82-5, v, 114 p., https://doi.org/10.3133/wri825.
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | One-dimensional reservoir-lake temperature and dissolved oxygen model |
| Series title | Water-Resources Investigations Report |
| Series number | 82-5 |
| DOI | 10.3133/wri825 |
| Year Published | 1981 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Description | v, 114 p. |