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The following pages offer diverse examples of projects that we have accomplished with our customers around the world. Different examples from a variety of countries and applications will give you an idea of how requirements of customers and measuring sites have been transformed into professional solutions. To achieve this, we work in close cooperation with our customers to best tailor a solution to meet their data needs and the site requirements and add in our many years of expertise in the form of experienced sales engineers, experts in specialized application areas, and professional project management for a successful project implementation. We would be happy to publish your project! To submit, please contact us

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Mine Water Treatment Relies on Borehole Loggers

For the last nine years, Severn Trent Services, has managed a contract for mine water treatment across the Coal Authority estate, including 73 mine water treatment schemes in England, Scotland and Wales. Water levels are one of the elements monitored closely at these sites, which have approximately 600 monitoring points, around 125 of which are OTT ecoLog water level loggers.

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Groundwater Monitoring Underpins Management of the Great Fen, UK

In 2001, five organizations came together to set out a vision for the Great Fen, with the aim of providing a more sustainable future for the area. In many respects, this work focuses on restoration by managing water levels, so a network of monitoring wells has been established.

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Water quality monitoring at the "Klingenberg" dam in Saxony, DE

Hydrolab HL7 Wasserqualitätssonde und OTT netDL Datenlogger überwachen Wasserqualität der Talsperre Klingenberg in Sachsen

The Regional Dam Administration of the Free State of Saxony in Germany is responsible for the regular water quality monitoring of the Klingenberg dam. OTT HydroMet provided the HYDROLAB HL7 water quality probe and the data logger for the measuring stations to support the tests at the dam.

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Satellite telemetry supports flood protection in Scotland

OTT PLS and SUTRON SATLINK 3 used by SEPA in Scotland for Urban Flood Warning

SEPA's (Scottish Environment Protection Agency) flood forecasting and warning relies on a network of water level and precipitation monitors, some of which are located in remote areas of catchments, where the communications infrastructure can be less reliable. The SUTRON SatLink3, a combined datalogger and satellite transmitter, was therefore trialled at a site in Boat of Garten, near Aviemore. The logger is SDI12 compatible, and an OTT PLS sensor was used to monitor water levels and temperature, in addition to a rain gauge and an air temperature sensor.

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How to ensure real-time access to Antarctic tide data

Tide measurement station at Vernadsky Research Station in the Antarctica

One of the most important challenges, when designing monitoring facilities in remote locations, is resilience. Remote tide gauge systems operate in extremely harsh environments and require robust communications systems that almost never fail and are capable of storing large amounts of data locally as extra protection for data. Scientists from the National Oceanography Centre (NOC) are therefore upgrading the South Atlantic Tide Gauge Network (SATGN) to include the latest low power dataloggers with built-in satellite telemetry capability – the SUTRON SatLink 3.

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OTT Water Level Logger Used in Small Irrigation Channels in Valencia, Spain

OTT ecoLog500 in Valencia, Spain

The irrigation sector in the Valencia area was forced to start measuring the levels in their channels due to updated regulations. For this an inexpensive, discrete and easy-to-install system was required.

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Monitoring ditch water quality using OTT ecoN, Hydrolab HL4 and XLink 500

Monitoring ditch water quality using OTT ecoN, Hydrolab HL4 and Sutron XLink 500 in the Netherlands

The RIVM in the Netherlands is using the OTT ecoN and the Hydrolab HL4, connected to an XLink 500 datalogger, to monitor the temporal variation of nutrients in ditch water. The data is sent to Hydromet Cloud.

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65 new OTT ecoLog 500 stations in Denmark for a crop cutting research project

Orbicon, Denmark finding new methods and changing times for crop cutting with the help of OTT ecoLog 500

The overall working hypothesis of the project is that new methods and changed times for crop cutting can be identified, which can optimize the crop cutting in relation to the water flow capacity, while at the same time there will be positive effects on the ecological state, compared to today, where the crop cutting in many streams are not. optimized for either drainage or environment.

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New network of weather stations in Sheffield

AWS network with Lufft WS700 weather station and OTT netDL data logger in Sheffield provided by OTT UK

OTT HydroMet is installing fifteen automatic weather stations as part of the University of Sheffield’s Urban Flows Observatory, which is led by the Departments of Civil and Structural Engineering, and Automatic Control and Systems Engineering (ACSE). The monitoring sites are conveniently located at Sheffield schools, and data from the stations will contribute to the project’s wider environmental monitoring objectives which include the free publication of data.

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OTT Pluvio²L in use for a research project in Antarctica

OTT Pluvio and Parsivel at McMurdo Station Antarctica Copyright Scott Landolt UCAR

The distinction between falling snow and blowing snow is particular challenging to researchers near McMurdo Station in Antarctica. These measurements are important to better understand the potential for sea level rise in the future due to climate change.

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Rosenheim – Discharge Measurement under challenging conditions


Challenging conditions have so far made flow measurement on the Triftbach River in Rosenheim difficult. With the new OTT technologies a safe and reliable measurement is now possible.

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Bedford Flood Gate Control

The installation of a monitoring solution that can trigger the opening and closing of the existing flood gates at predetermined river levels.

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Flood Water Protection in the City of Buenos Aires

A monitoring system with alarm function for a retention basin shall protect residents against flood damage in the future

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Village installs local flood warning system | Oxton - Nottinghamshire

Floowwarning - waterlevel measurement SMS notification

Advanced river monitoring system from OTT Hydrometry that automatically issues text (sms) message alarms so that residents can implement flood protection measures.

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Modern monitoring network in the Indian Ocean


A new network with a total of 122 stations provides a sustainable system solution for the Sri Lankan water management authorities.

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Reservoir Aabach Germany - Continuous monitoring of contact pressure

Reservoir Aabach

56 OTT PLS pressure probes have been installed in the damming structure of the reservoir to measure the contact pressure in the dam continuously. These data are directly forwarded to the data center of the responsible water board.

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Discharge Measurement Deep Within a Cave

Speleology-Hessenhau-cave-discharge-MF pro

Using the OTT MF pro flow meter for speleology, or the measurement of water discharge within caves. The Hessenhau Cave is the deepest known cave (144 m / 472 ft) of the Swabian Alps in southern Germany.

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Weather data for nautical information system

Wireless connection of an OTT netDL via WLAN

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Water Quality Monitoring and Weather Data at Pampulha Lake-Brasil

This lake was a recreation area until the 1980s. Since then, it suffers from sewage problems and is in a serious state of eutrophication.

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E.ON Power Plant Nuremberg

Stationary discharge measurement at the location Franken I - E.ON power plant GmbH, Nuremberg, using the OTT SLD.

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Water Quality in the Mississippi Basin

Long term deployment in the harsh aquatic environment of the Mississippi River.

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Buoy-based temperature profiling in the Bavarian Lakes

Research project on the long-term effects of climate change on Bavarian lakes

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Ireland Groundwater Monitoring Program

The EU Water Framework Directive (WFD) tasked EU member states to achieve good qualitative and quantitative status of all water bodies by 2015. The directive covers surface, coastal, and groundwater.

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Groundwater Monitoring around Hydraulic Fracturing Sites in Colorado

groundwater monitoring hydraulic fracturing

Using the OTT ecoLog 800 groundwater level sensor, OTT netDL data logger, and Hydrolab MS5 multiparameter sonde to monitor groundwater wells surrounding hydraulic fracturing sites in Colorado.

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Control of Dredging Works in the Danube River - Austria

Application OTT PLS and OTT netDL

Monitoring of dredging works and correct billing by remote controlling dredging barges in the Danube river using the OTT PLS and OTT netDL.

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Precipitation monitoring in the Sierra Nevada - Spain

Precipitation measurement station OTT Pluvio²

High mountain application with OTT Pluvio² as part of a research project.

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Continuous Discharge Monitoring in Mecklenburg - Germany

Ideal Site for Acoustic Discharge Measurement at the Wallensteingraben near Schwerin-Germany with OTT SLD, OTT CBS, and OTT LogoSens

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Monitoring underground water resources in Brazil

Datalogging- Water Quality - Level- Coca Cola

Monitoring of level, temperature, pH and conductivity at mineral springs owned by Coca Cola in Mogi das Cruzes, Brazil.

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Precipitation measurement in high mountains - Aosta Valley

OTT Pluvio² in 3000 meters (almost 10,000 feet) in altitude: Precipitation measurement in extreme conditions near the Matterhorn - Valle d’Aosta / Italy.

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All-weather meteorological stations in the Carpathian Mountains - Hungary

All-weather meteorology stations have to provide reliable and accurate data.

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Flood protection program Zulawy, Gdansk – Poland

Flood protection Groundwater precipitation

Pilot station for “Complex flood protection program Zulawy 2030”, in Gdansk – Poland.

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Discharge measurement at the river "Große Roeder" in Saxony - Germany

discharge measurement side looking doppler transient time ultrasonic OTT

Online-measurement with ultrasonic travel time differential system and side-looking Doppler.

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Weather stations for the 2014 Winter Olympic Games in Sochi

Sochi - Olympic Games Weather Station with OTT Pluvio²

Specialized automatic meteorological stations (AMS) equipped with OTT Pluvio² as a part of real-time weather system for the 2014 Sochi Olympic Winter Games.

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Remote Water Quality Monitoring in South Africa

Long-term monitoring of natural waters around mining operations in South Africa provided a variety of challenges including rappelling down a cliff to install water monitoring equipment!

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49 stations along the Mekong River - Cambodia - Vietnam - Laos - Thailand

Hydro-meteorological data collection and transmission system

Sharing of hydrological information among the Mekong member countries for sustainable development on managing water resources.

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Dam Monitoring in South Africa

Precipitation measurement station OTT Pluvio²

The Komati River Basin Development Project comprised the design, construction, operation and maintenance of two large dams in South Africa and Swaziland

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New monitoring network for Scottish ports

A network of 15 tide and weather stations with OTT Hydromet monitoring equipment provides live data on port conditions at Scotland's west coast for ferries.

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Harris County Flood Warning System

The Harris Country Flood Warning System (FWS) features a complex network of 139 gauging stations, utilizing the OTT Radar Level Sensor and OTT Compact Bubbler Sensors for non-contact water level measurement.

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Well monitoring for a water supplier

Precise water level measurement with continuous electronic measurement and data transfer via Profinet into a control system.

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Precipitation Measurement in East Tyrolia High Mountains

Combined OTT and Adcon technologies for a solution in a remote mountain region without network coverage

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Remote location requires minimum concept

Water level Montenegro OTT Orpheus Mini

Water level monitoring using the OTT Orpheus Mini for a projected power plant in Montenegro, Austria.

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Flood Warning Station at Kriebstein, Saxony - Germany

Flood-warning station uses the OTT SLD and LogoSens2

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