Northwest Natural Gas Co., 12120 NE Inverness Dr, Portland, OR 97220, US

Stevens Water Monitoring Systems, based in Portland, Ore., is a manufacturer and marketer of integrated hydrological, meteorological and oceanographic monitoring instrumentation, accessories and information systems that help optimize water resource management and enhance forecasting. The company sells sensors, data collection platforms and telemetry communication systems for governments and industries that monitor and manage the environmental conditions with emphasis on water resources. Additionally, its services include engineering support on systems design, installation and commissioning; on-going monitoring station maintenance; and data collection and management. The company s hydrological systems are used for the measurement of water level, water flow and water quality in streams, rivers, ponds, estuaries, irrigation canals, lakes, reservoirs and aquifers. Its meteorological systems are used for flood warnings and forecast and weather station configurations. Its oceanographic systems are used for tide gauge and measurements for shipping channels, water quality and tsunami warnings.