A primary sewage treatment plant discharges its effluents into Butler Ditch, Oak Openings, Lucas County, Ohio. A marsh habitat near the discharge outlet, high turbidity, sludge covering the stream bed and pungent odor gave reason to believe that the effluent from the sewage treatment plant contaminated the ditch. Water and stream sediment samples were collected from 24 sample locations over a 2...

Jason D.Thompson R eduction of nonpoint source pollution of forest streams is a major issue in the forest products industry. Consequently, extensive research has been focused on documenting impacts of forest harvesting, road construction, and site preparation on water quality in forest streams. Researchers have found that roads create more pollution, in the form of sediment, than harvesting act...

Strategic efforts to abate sediment in impaired watersheds face numerous challenges in achieving tangible water quality improvements that are measurable, attributable to project actions, and focused on principle causative sources. As part of a small watershed sediment control strategy, the Soque River Watershed Partnership will examine the feasibility of conducting sediment source assessments f...

A sensitive method was developed to measure the sediment concentration of 10 wastewater micropollutants selected as potential sanitary tracers of sewage contamination and include: nonsteroidal anti-inflammatory drugs (acetaminophen - ACE and diclofenac - DIC), an anti-epileptic drug (carbamazepine - CBZ), a β-blocker (atenolol - ATL), a stimulant (caffeine - CAF), a bronchodilator (theophylline...

Jyoti Rai, Department of Biology, University of South Alabama, Mobile, AL 36688. Email: [email protected]. Sediment samples from three sites along Halls Creek were collected for inspection of benthic invertebrates. Sediments were collected from two opposite shores. Two samples were collected from each site. Halls Mill Creek, so far a healthy stream, is being degraded slowly by increase...

The importance of E. coli as an indicator organism in fresh water has led to numerous studies focusing on cell properties and transport behavior. However, previous studies have been unable to assess if differences in E. coli cell surface properties and genomic variation are associated with different environmental habitats. In this study, we investigated the variation in characteristics of E. co...

[1] The exchange of water between a stream and its hyporheic zone (defined as the sediment beneath and immediately adjacent to a stream) underpins many ecological and hydrological functions in turbulent streams. Hyporheic exchange can be parameterized in terms of an effective diffusion coefficient Deff and considerable effort has gone into developing process-based models and empirical correlati...