Click to go to the top of the page

If you would like to add a reciprocal link, contact us here.


Americas ...

OSW Acoustics -
The purpose of this website is to provide relevant information on hydroacoustic technology for users in the USGS and other agencies. The U.S. Geological Survey (USGS) has been collecting streamflow information for the Nation's streams since 1889. Since the early 1980s the USGS has worked cooperatively with manufacturers to develop and enhance the use of acoustic Doppler instruments for streamflow and other hydraulic measurements.

Europe ...

Hydrometeorological Service of Republic of Serbia
Active since 1888, and a WMO member since 1947. Most data from stations on-line.

UK Weather Online
Good comprehensive site for UK and global weather resources

Global ...

GRDC - Global Runoff Data Centre

The Global Runoff Data Centre is an International data centre operating under the auspices of the World Meteorological Organization (WMO). Established in 1988 to support the research on global and climate change and integrated water resources management, the GRDC has been serving for twenty years successfully as a facilitator between the producers of hydrologic data and the international research community. GRDC is a key partner in a number of data collection and data management projects on a global scale.

Water Monitoring Alliance
The Water Monitoring Alliance is made up of organisations involved in the collection, analysis, reporting and dissemination of information on water in all its uses. Its objectives are to enhance a greater exchange and sharing of information amongst the organisations and programmes involved in the collection and dissemination of water data and to provide a better access to the information for the decision makers, the media and the public at large. The Alliance is a cooperative partnership among organisations working at the international, regional, national and local levels.


Americas ...

In-situ Inc. - Water Monitoring Equipment
From aquaculture and remediation, to energy, mining, and research, In-Situ is known for innovating reliable, top quality water monitoring equipment that reduces field visits and equipment costs.

Europe ...

Campbell Scientific - Measurement & Control Products for Long-term Monitoring
the website of the European subsidiary, Campbell Scientific Ltd, (CSL). CSL was formed in 1985 to provide a sales and support service for countries within the EU. Other offices have their own websites

Dynamic Logic Telemetry Systems
Dynamic Logic has been providing Telemetry solutions to all areas of Water & Waste Management together with the Process Industries for many years, including telemetry solutions, outstations and Master Station software

ETG - World Watching Technology
Italian based company supplying environmental monitoring instruments, dataloggers and software.

Flowmarque Ltd - Flow Measurement Systems
FlowMarque designs manufactures and installs flow measurement systems for use in open channels and drains. Their expertise is applied to wastewater treatment, drainage, outfall monitoring and CSOs. The FlowMarque test/calibration facility is unique enabling design of optimal systems for cost-effective, low maintenance operation and applications (i.e. low-flow MCERTS applications).

Hydro-Logic Ltd.
UK based company specialising in water resource and management technology, including software applications, monitoring instruments and field and data services

Kisters - Information Systems for Management of Natural Resources
German based supplier of well known hydrometric data acquisition and control packages such as WISKI, BIBER, SODA and LUQS

NASA Marine Instruments
Navigational Aids. Tel: +44 (0) 1438 354 033

Oriel Systems Ltd.
Telemetry systems and instrumentation

OTT Hydrometry
OTT Hydrometry manufactures instrumentation that enables water professionals to monitor the planet's most precious resource. Through the delivery of accurate reliable data, OTT's instruments and services provide essential tools to help protect the environment.

SEBA Hydrometric Instruments
SEBA HYDROMETRIE has been designing and manufacturing precision environmental instruments for more than 30 years. High quality systems for the study of groundwater, surface water, sewage, and meteorology are in daily use in 120 countries around the world.

SeSys - Networked Vision Systems for Remote Site Security
SeSys have developed a powerful, portable solution for remote site security allied to asset control and management information. Using many years of experience in IT and electronics they have designed the complete transportable security, surveillance and remote monitoring systems.

SISGEO is a leading designer and manufacturer of a wide selection of instruments for use in the area of rock and soil measurement and analysis. SISGEO instruments are supplied worldwide through a growing distribution network. In the past several years, sales have been equally distributed between domestic and international markets. SISGEO was established in 1993 when the current ownership acquired SIS Geotecnica. Since then, SISGEO has been dedicated to the development, manufacturing and supply of high quality instruments in order to meet the demands of civil engineering projects.

SYMMETRON - Electronic Applications
Symmetron was founded in 1989 and evolved as a manufacturer of dataloggers and supplier of measurement equipment.

Vaisala - Environmental Electronic Measurement Systems
Finnish based supplier of systems and equipment for meteorology, environmental sciences, traffic safety and industry.

Valeport Ltd.
UK leading manufacturer of hydrometric and oceanographic instrumentation

Global ...

SonTek Acoustic Systems
SonTek/YSI, founded in 1992 and advancing environmental science in over 100 countries, manufactures affordable, reliable acoustic Doppler instrumentation for water velocity measurement in oceans, rivers, lakes, harbors, canals, estuaries, and laboratories. SonTek is headquartered in San Diego, California, and is part of YSI Inc., an employee owned company that provides monitoring and data collection instrumentation to global water quality, water quantity, and aquaculture markets.


Water Experts Network
Water Experts Network is a virtual network of freelance water experts from all over the world.


Europe ...

UK Environment Agency HiFlows-UK Database
The Flood Estimation Handbook (FEH) is the basis for most current flood estimation in the United Kingdom. This website provides updated flood peak data for use with the methods in the FEH. Specifically, this HiFlows-UK website provides: updated flood peak data at around 1000 river flow gauging stations in the UK: additional information about the gauging stations to allow hydrologists to make informed judgements about flood frequency.These webpages assume some knowledge of flood hydrology and the Flood Estimation Handbook.

Global ...

SDI-12 Data Standard
SDI-12 stands for serial data interface at 1200 baud. It is a standard to interface battery powered data recorders with micro-processor based sensors designed for environmental data acquisition (EDA). EDA is accomplished by means of a sensor, or sensors, and a data recorder which collects and saves the data. SDI-12 is a standard communications protocol which provides a means to transfer measurements taken by an intelligent sensor to a data recorder. An intelligent sensor typically takes a measurement, makes computations based on the raw sensor reading, and outputs the measured data in engineering units.