Evaluation of dissolved oxygen and nutrient trends in the Houston ship channel from historical statewide monitoring data

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dc.acquisition-srcDownloaded from-Engineering Village 2en_US
dc.call-noen_US
dc.contract-noen_US
dc.contributor.authorGuillen Gen_US
dc.contributor.otheren_US
dc.date.accessioned2010-02-15T17:16:00Z
dc.date.available2010-02-15T17:16:00Z
dc.date.issued1993en_US
dc.degreeen_US
dc.description518-527en_US
dc.description-otheren_US
dc.description.abstractDissolved oxygen and selected nutrient trends in the Houston Ship Channels (Texas Water Commission (TWC) segments 1007, 1006 and 1005) during the period of 1969 through 1990 were evaluated using non-parametric time series analysis. Surface and/or bottom concentrations of dissolved oxygen, ammonia nitrogen, nitrate nitrogen, orthophosphate, and total phosphorus from selected stations were evaluated. These data indicate that dissolved oxygen levels have increased in the Houston Ship Channel over the last 20 years when adjusted for seasonal variation. During this period of time point source wastewater loading (lb/d BOD) from domestic and industrial sources has decreased. Resulting decreases in phosphorus compounds and ammonia nitrogen, and increases in nitrates as a result of enhanced nitrification, have also occurred. Increased aquatic life use in the HSC has been documented by other TWC studies as a result of these increasing trends of dissolved oxygen. It is highly probable that the increased dissolved oxygen levels observed in the HSC are due to increased regulation and enforcement by state and federal agencies, increased facility compliance, and subsequent decreases in wastewater effluent loading and bypasses. These results illustrate the importance and application of a well designed monitoring program for the purposes of tracking the effectiveness of water quality managementen_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.historyen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/23289
dc.latitudeen_US
dc.locationen_US
dc.longitudeen_US
dc.notesCompilation and indexing terms, Copyright 2004 Elsevier Engineering Information, Incen_US
dc.placeNew Orleans, LA, USAen_US
dc.publisherPubl by ASCE, New York, NY, USAen_US
dc.relation.ispartofseries50883.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesCoastal Zone: Proceedings of the Symposium on Coastal and Ocean Managementen_US
dc.subjectAmmoniaen_US
dc.subjectCoastal engineeringen_US
dc.subjectManagementen_US
dc.subjectMonitoringen_US
dc.subjectNitratesen_US
dc.subjectOxygenen_US
dc.subjectPhosphorusen_US
dc.subjectTexasen_US
dc.subjectTime series analysisen_US
dc.subjectWateren_US
dc.subjectWater pollutionen_US
dc.subjectWater qualityen_US
dc.subjectWaterway transportationen_US
dc.titleEvaluation of dissolved oxygen and nutrient trends in the Houston ship channel from historical statewide monitoring dataen_US
dc.typeCONFen_US
dc.universityen_US
dc.vol-issue1()en_US

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