<?xml version='1.0' encoding='utf-8'?>
<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:contributor>William G. Wilber</dc:contributor>
  <dc:contributor>James G. Peters</dc:contributor>
  <dc:creator>Charles G. Crawford</dc:creator>
  <dc:date>1980</dc:date>
  <dc:description>&lt;p&gt;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.&lt;/p&gt;&lt;p&gt;The major point-source waste load affecting the Wabash River in Huntington County is the Huntington wastewater-treatment facility.&lt;br&gt;&lt;/p&gt;&lt;p&gt;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.&lt;/p&gt;&lt;p&gt;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.&lt;/p&gt;&lt;p&gt;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.&lt;br&gt;&lt;br&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.3133/ofr8075</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>U.S. Geological Survey</dc:publisher>
  <dc:title>A one-dimensional, steady-state, dissolved-oxygen model and waste-load assimilation study for Wabash River, Huntington County, Indiana</dc:title>
  <dc:type>reports</dc:type>
</oai_dc:dc>