Water Level Monitoring Articles

  • Why are we monitoring nutrients at different depths?

    Recently, LG Sonic introduced the MPC-Lab, an innovative monitoring buoy that can monitor algae, physico-chemical variables, and even nutrients such as nitrogen and phosphorus in near real-time and at different depths in a body of water. Combined with our other monitoring tools, this system offers a unique way to detect the spatial and temporal patterns of nutrient concentrations which play a ...


    By LG Sonic

  • American Water Works Association NJ meeting takes place in Atlantic City

    As the fourth Nor'easter of March blew into New Jersey, hundreds of professionals in the water industry made their way to Atlantic City for the 83rd Annual Conference of the NJ chapter of the AWWA. Speakers and poster authors were set to discuss topics such as PFAS, new and advanced water technologies, updated regulations, and case studies. But due to the inclimate weather, a couple of sessions ...


    By Purolite Corporation

  • Tampa Switches to Chlorine for Water Treatment

    Many Tampa residents received a notice in the mail a few days ago alerting them that the city is temporarily changing their disinfecting agent from chloramines to chlorine. The notice, which you can read in full below, claims that this procedure is merely routine maintenance and that the water will still be safe to drink. ...


    By Enviro Water Products

  • New England Water Works Association Meeting held in Worcester, MA

    Purolite headed to Worcester, Massachusettes for their second American Water Works Association (AWWA) conference in the northeast region this year. The conference brings together educators, regulators, utility workers, and consultants from the water industry to discuss new regulations as well as contaminants threatening municipal drinking water.  ...


    By Purolite Corporation

  • Valeport showcase new solutions at Flood and Coast on stand A9, March 20-22

    Showcasing the latest solutions to support hydrographic surveying ...


    By Valeport Ltd

  • Powering Existing Control Dams - Case Study

    There are thousands of non-powered dams in the United States and Canada, either for flood control, water level control, or even recreational purposes. Ossberger Hydro has different turbine configurations that help to minimize the civil work related to the turbine implementation on these existing dams and also provide the operation flexibility of managing high water level and low flow ...


    By OSSBERGER GmbH + Co. KG

  • A Brief History of Stevens` 116 Year Chart Recorder Legacy

    The legendary mechanical chart recorder for environmental monitoring dates back to 1911, when John C. Stevens invented the Type A chart recorder. In 1906, J.C. Stevens was the Hydrographer for the USGS out of Portland, Oregon, and was soon promoted to District Engineer.  While with the USGS, he realized that hiring local citizens to observe and record height of water was not accurate or ...

  • Vibration reduction in water pump motor with magnetically boosted Tuned Mass Damper - Case Study

    Problem description: A 75kW water pump motor experiences excessive vibration levels (up to 11mm/s RMS) due to the presence of a structural resonance in the mechanical supporting structure (see below). The frequency of this structural resonance lays in the operating range of the variable speed motor, leading to a significant vibrations amplification. The vibration measurements have been ...


    By Micromega Dynamics SA

  • Stevens Equipment Records Historical Information During Tsunami

    On the eve of the discontinuation of Stevens chart recorders, we are republishing the following article about the highest profile contribution that our products have made in their 116 year history. This article was originally published in the Stevens Water Monitor newsletter in 2007. One of the longest lived products in water resource monitoring has been the Stevens’ chart recorder. In ...

  • Algae control in Auckland Dam - Case Study

    Five solar-powered algae control systems where installed in the Lower Nihotupu Dam in Auckland, New Zealand to reduce the levels of blue-green algae. The project started in December 2016 and so far, the project appeared to be of great success with the blue-green algae count over summer 90 per cent less than the previous year. The Challenge: Reduce Blue-green Algae Count The ...


    By LG Sonic

  • Closed Circuit Coolers: Design with winter in mind

    When outside temperatures fall below freezing, water inevitably forms into ice. Open cooling towers can be susceptible to freezing due to their inherent nature of operation. As a result, ice formation becomes a subject of management, not elimination. Fortunately, there are alternative solutions. Closed circuit coolers are used for a multitude of niche applications, but are ideal for evaporative ...


    By Evapco Inc.

  • Spatial inequality in water access and water use in South Africa

    The importance of measuring inequalities in sustainable development is reflected in the requirement to disaggregate national data for the Sustainable Development Goals (SDGs). In this paper, piped water access, water use and water stress are mapped and reported at national, provincial, district, municipal, town and ward levels, and urban and rural areas. The results show that although 45% of ...


    By IWA Publishing

  • Do natural spring waters in Australia and New Zealand affect health? A systematic review

    Therapeutic use of spring waters has a recorded history dating back to at least 1550 BC and includes both bathing in and drinking such waters for their healing properties. In Australia and New Zealand the use of therapeutic spring waters is a much more recent phenomenon, becoming a source of health tourism from the late 1800s. We conducted a systematic review aimed at determining the potential ...


    By IWA Publishing

  • Governance, strategy and efficiency of water utilities: the Italian case

    The determinants of the performance of water utilities are a topical issue worldwide. This paper analyzes the relationship between efficiency and corporate governance in Italian water utilities, measured through data envelopment analysis. Using an M-quantile regression model, efficiency estimations are ranked considering relevant governance (board size and composition; firm size) and strategy ...


    By IWA Publishing

  • A Dutch first in the polder - Water Board Zuiderzeeland measures flow rates to achieve sustainability

    The Dutch province of Flevoland lies metres below sea-level. That’s why rain and seepage need to be removed from the polder, some 6 metres up. And that’s the reason Flevoland is drained continuously by seven huge pumping stations. The quantity of energy involved in this is as great as the energy consumption of 4,000 households. Water Board Zuiderzeeland has launched the ‘Energy ...


    By Eijkelkamp Soil & Water

  • Effect of salinity on medium- and low-pressure UV disinfection of Vibrio cholerae

    The problem of biological invasions attributed to ballast water release is an ongoing problem that threatens ecosystems and human health. Ultraviolet (UV) radiation has been increasingly used for ballast water treatment mainly due to the advantages of short contact time and minimized harmful disinfection by products. In this study, the impact of salinity on the inactivation of Vibrio cholerae ...


    By IWA Publishing

  • Ozonation of dimethyl phthalate in water activated by N-methyl hydroxylamine

    The degradation of dimethyl phthalate (DMP), which is a pollutant of concern in the water environment, was carried out by catalytic ozonation with N-methyl hydroxylamine (N-HA) at different pH. The process and mechanism were investigated for the removal of DMP and ozone (O3) under various experimental conditions including pH, N-HA dosage, and with or without tert-butyl alcohol (TBA). The ...


    By IWA Publishing

  • What are the main indicators of water quality?

    “Water is the driving force of all nature;” so said Leonardo da Vinci. The survival of our planet depends on the availability of water and the condition that it is in. It is therefore vital to make sure that it is able to provide a hospitable environment for those that live in it, and is free from harmful levels of substances for those that drink it. Not ...


    By Aquaread Limited

  • 7 Winterizing Tips to prep your Modular & Portable Buildings

    “Weather” or not it snows where you are, winterization for your modular & portable buildings is important to complete before the colder weather hits. ...


    By Satellite Shelters, Inc.

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