Publication Type:

Journal Article

Authors:

Lock, Alan; Spiers, Graeme; Hostetler, Blair; Ray, James; Wallschlager, Dirk

Source:

Water Research, Elsevier Ltd, Volume 93, p.289-295 (2016)

ISBN:

00431354

Keywords:

Alkalinity, Biochemical oxygen demand, Chlorine compounds, Dissolved oxygen, Groundwater, Groundwater pollution, Lake pollution, Monitoring, Potable water, Probes, silica, vents, water quality

Abstract:

Spatial surveys of Ramsey Lake, Sudbury, Ontario water quality were conducted using an innovative underwater towed vehicle (UTV) equipped with a multi-parameter probe providing real-time water quality data. The UTV revealed underwater vent sites through high resolution monitoring of different spatial chemical characteristics using common sensors (turbidity, chloride, dissolved oxygen, and oxidation/reduction sensors) that would not be feasible with traditional water sampling methods. Multi-parameter probe vent site identification is supported by elevated alkalinity and silica concentrations at these sites. The identified groundwater vent sites appear to be controlled by bedrock fractures that transport water from different sources with different contaminants of concern. Elevated contaminants, such as, arsenic and nickel and/or nutrient concentrations are evident at the vent sites, illustrating the potential of these sources to degrade water quality. 2016 Elsevier Ltd.

Notes:

Compilation and indexing terms, Copyright 2018 Elsevier Inc.<br/>20160902037914<br/>Chemical characteristic<br/>Contaminants of concerns<br/>Drinking water sources<br/>High-resolution monitoring<br/>Nutrient concentrations<br/>Source water protection<br/>Underwater towed vehicle<br/>Water quality assessments