A one-dimensional, steady-state, dissolved-oxygen model and waste-load assimilation study for Wabash River, Huntington County, Indiana
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Abstract
The Indiana State Board of Health is developing a State water-quality management plan that includes establishing limits for wastewater effluents discharged into Indiana streams. A digital model calibrated to conditions in the Wabash River in Huntington County, Ind., was used to predict alternatives for future waste loadings that would be compatible with Indiana stream water-quality standards defined for two critical hydrologic conditions, summer and winter low flows.
The major point-source waste load affecting the Wabash River in Huntington County is the Huntington wastewater-treatment facility.
The most significant factor potentially affecting the dissolved-oxygen concentration during summer low flows is nitrification. However, nitrification should not be a limiting factor on the allowable nitrogenous and carbonaceous waste loads for the Huntington wastewater-treatment facility during summer low flows if the ammonia-nitrogen toxicity standard for Indiana streams is met.
This wasteload assimilation study is not based on a verified model. The changes in stream water quality predicted by the model represent only possible stream response to different effluent conditions.
The dissolved-oxygen standard for Indiana streams, an average of 5.0 milligrams per liter, should be met during summer and winter Zow flows if the National Pollution Discharge Elimination System's 5-day, carbonaceous biochemical-oxygen demands of a monthly average concentration of 30 milligrams per liter and a maximum weekly average of 45 milligrams per liter are not exceeded.
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | A one-dimensional, steady-state, dissolved-oxygen model and waste-load assimilation study for Wabash River, Huntington County, Indiana |
| Series title | Open-File Report |
| Series number | 80-75 |
| DOI | 10.3133/ofr8075 |
| Year Published | 1980 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Contributing office(s) | Indiana Water Science Center |
| Description | vii, 55 p. |
| Country | United States |
| State | Indiana |
| County | Huntington County |
| Other Geospatial | Wabash River |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |