water monitoring Articles
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Custom Staff Gages – A Unique Service Provided by Stevens Water
Stevens Water Monitoring Systems was the original designer of the style A, C, E, I and M staff gages and continues to be a leading supplier of these standard staff gages styles. A unique service offered to Stevens customers is the design of custom staff gages for special applications. Custom staff gages are ideal for unique mounting angles, slopes, flow measurements, larger display needs, or ...
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100 Years of History and Innovation - Stevens Water Monitoring Systems
Stevens Water Monitoring Systems is approaching an important milestone in 2011: our 100 year anniversary. As we prepare to bring exciting new products and services to market in 2011, we’d like to take a look back at our heritage as America’s first water level instrumentation company and reflect on what has made Stevens Water the company it is ...
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Physicochemical parameters of natural waters
All freshwater bodies are interconnected to the oceans, the atmosphere, and aquifers via a complex hydrological cycle. Wetlands, icecaps and biopheric water also participate in the continuous conveyance of water on planet Earth. The Earth’s hydrological cycle is driven by evaporation and gravity on which ecosystems and human societies depend. Growing populations may put stresses on natural waters ...
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Stevens equipment records historical information during tsunami - Case Study
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 ...
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Jamaican Water Resources Authority Ensures Reliable Water for 2.8 Million Island Residents
For over fifty years Jamaica has undertaken comprehensive water resource management and forecasting in order to ensure adequate and safe water supplies are available country-wide. This has been achieved by the Jamaican Water Resources Authority (WRA) through a combination of direct planning, resource monitoring, data analysis, and a great level of cooperation between government and ...
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What You Don’t Know About Snow: The USDA’s SNOTEL Network is Playing a Critical Role in Protecting Water Resources in the Western United States
There are many complex political, social, environmental, and scientific challenges surrounding water resources in the western United States. Water is scarce and does not occur when and where people need it the most. According to the US Geological Survey (USGS), about 80 percent of fresh water used in the western United States is appropriated for irrigation. Over the past 150 years, society has ...
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Staff Gages Overview
Stevens’ environmentally rugged staff gages provide a quick and easy visual indicator of water level and flow. Every water level monitoring station should include a staff gage from which the height of the water may be visually and easily compared to any data logger’s reported measurement. Enamelled iron gages are preferred over other type gages (such as painted gages) since ...
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Advances and current changes in cellular telemetry
Recent advances in cellular technology are offering more efficient and reliable wireless transmission of data between remote locations and the central collection points.Wireless telephone technology has been around in various forms since the 1940’s. Stevens was the first company to introduce telephone telemetry technology for remote water monitoring with the Telemark in 1939. In 1969, Bell ...
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Evaluation of the Stevens HydraProbe Temperature Measurements from -30 to +40 Degrees Celsius
Soil temperature data down to -30° Celsius is becoming more and more relevant to climate studies. While environmental issues fuel the development and the widespread use of sophisticated environmental models, reliable input data is becoming essential for researchers and modelers. The soil temperature data collected by the HydraProbe can be used in climate studies in arctic regions, regional ...
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Water Quality Monitoring for the “Big Four Parameters”
Many different parameters can be measured in natural and artificial waters with sensors or via lab analysis. Each parameter effects water quality and the organisms that depend on the water for survival. Different states, monitoring agencies, and companies also place an emphasis on different water quality parameters to be monitored, depending on local conditions and mandates. For most water ...
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Stevens-Connect Helps Florida DEP Monitor Water Resources and Plan for the Future
The Florida Department of Environmental Protection (FDEP), in conjunction with several other State agencies, recently launched a new data monitoring program to provide insights into many Florida waterways. With the objective of easily sharing water and weather data between State and Federal agencies and with the general public, FDEP chose to utilize Stevens-Connect system to process, display, ...
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How dangerous is blue green algae?
Blue green algae is one of the popular parameters that can be tested using our water monitoring equipment. It is a common water pollutant that can have a severe impact on ecosystems and plant and animal life. Read more in our exclusive LinkedIn article, where our MD Craig Harrison explains in detail just how dangerous blue green algae is, and why it is so important to track. ...
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Measuring the Soil Water Retention Curve with the Stevens pF Matric Potential Sensor and Hydra Probe II Soil Moisture Sensor
The Stevens pF Sensor is a unique matric potential probe, which is used to measure the soil water potential of a soil - the force with which water is held within the soil and how much energy is needed to overcome this force to extract water from the soil. Unlike traditional tensiometers such as gypsum blocks, the Stevens pF Sensor utilizes a patented heating element to measure soil water ...
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Summary of 2018 MOISST Workshop
Stevens recently sponsored the 2018 MOISST Workshop: From Soil Moisture Observations to Actionable Decisions, which was held June 4-7 in Lincoln, Nebraska. This workshop provided a unique opportunity for leaders in soil moisture research and development to come together in an interactive workshop format to exchange ideas and develop collaborations. This was the eighth ...
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The Future of Data Acquisition: Will the Internet`s Cloud-Computing Replace the Data Logger?
Electronic data loggers have been integral instrument in automation of data collection since their inception with widespread adoption beginning in the 1980’s. Data loggers are used across a variety of industries requiring automated data collection – applications include remote water resource monitoring, weather conditions, machine monitoring, gas and oil projects, building HVAC ...
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Surfactant-assisted oil-in-water monitoring
A variety of common surfactants have been used to reduce fouling and enhance the performance of fluorescence-based oil-in-water monitors. Among the most effective are the alcohol ethoxylates with HLB values close to 12. Examples are SurfonicTM L24-9 (Hunstman, USA, HLB 13) and TergitolTM 15-S-7 (HLB 12.1). These surfactants readily convert heterogeneous oil/water mixtures into homogeneous, ...
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Next-generation water monitors
Fancy IoT gadgets can now check the water flow in a home or business and warn of any potential flood incidents. Here’s how they can save the industry a bundle Imagine you’re driving along on your daily commute. Suddenly, the engine seizes. The car grinds to a halt. Thick black smoke begins pouring out of the hood of your car as you wonder what happened. At the garage, ...
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Stevens Water Acquires Structure Monitoring, Inc.
Stevens Water Monitoring Systems Inc. is proud to announce the completion of the acquisition of Structure Monitoring Inc.Also based in Portland, Oregon, Structural Monitoring Inc. (SMI) provides intelligent IoT (Internet of Things) solutions for monitoring, analyzing, and managing critical infrastructure with emphasis on hydropower, bridges, and transportation applications.Stevens and SMI share a ...
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CBRN Water Monitors
WANTED: CBRN (Chemical, Biological, Radiological, Nuclear) Water Monitors A recent survey by Environmental Protection Agency personnel found that Technical Associates is currently the sole source, worldwide, to provide comprehensive instrumentation for real time monitoring of radionuclides, chemicals, and biological contaminants in drinking water and wastewater. Information on the complete CBRN ...
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Water Monitoring & Research in the Great Fen
The Great Fen, a vast landscape located in Cambridgeshire, England, and home to two National Nature Reserves, is currently undergoing one of the largest restoration projects of its type in Britain – the restoration and transformation of a landscape for the benefit of both wildlife and people. What started out as wildlife recording in the 1800’s, an annual program of ...
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