As part of our M2M product strategy, Stevens releases Avo, a complete monitoring station platform. This all-in-one, sensors-to-cloud cellular gateway includes all hardware, software and services needed for data acquisition, cloud-based data storage, viewing and analysis. It makes any sensor data easily accessible and the station remotely configurable.  


Signaling the beginning of a new chapter of innovative product development, Stevens completely re-brands the company. Our new tagline “Measurements to Mind” shows how invested we are in the concept of cloud computing—we believe there will be a fundamental shift in how the industry collects data, and we intend to lead the charge.


Stevens Water Monitoring Systems celebrates its 100 year anniversary of monitoring the Earth’s environmental resources.


Stevens moves to its new corporate headquarters in Portland, Oregon near Portland International Airport, affording more room to grow as the company expands its business.


Stevens releases the Shark, the first Bluetooth radio transmitter specifically designed for the environmental monitoring and testing market. It can link devices from up to 300 feet apart, and features true RS232/RS485 serial cable emulation.


The original (analog) Stevens HydraProbe, based on patented technology, is released to the market and soon becomes a best-seller for Stevens as a way to quickly measure water content, salinity, and temperature of soil.


The optics side of the company and the water monitoring side of the company are separated from each other, with Stevens becoming “Stevens Water Monitoring Systems, Inc.”, a privately-held company with its primary focus on monitoring water in the environment.


The continued growth of Leupold and Stevens Instruments is cause for a move to new, larger manufacturing facilities in Beaverton, Oregon. The new 66,000 square feet headquarters was built to handle 20 years of expansion—instead, the space was used up within four short years, necessitating further expansion.


Leupold and Stevens Instruments designs and sells their first hunting sight, setting the future for the “Leupold” side of the business to focus on sport optics while “Stevens” continues to pioneer the water measurement business.


JC Stevens helps found the Oregon Museum Foundation, which would later become the Oregon Museum of Science and Industry (OMSI) in 1949. JC Stevens would serve as president of OMSI for 13 years.


The company was renamed “Leupold and Stevens Instrument Company” after the death of founder Adam Volpel and to better reflect the company’s current focus.


The Telemark, the first remote water level reporting device, was introduced by JC Stevens. The product was patented two years later in 1939.


JC Stevens joins Marcus Leupold and Adam Voelpel’s company, firm renamed to “Leupold, Volpel & Company”.

1911 part 2

Stevens Water Monitoring Systems was originally founded as “Leupold & Voelpel” in 1907 by brothers-in-law Marcus Friedrich (Fred) Leupold and Adam Voelpel. The firm, located in Portland, Oregon was primarily focused on the repair and manufacture of surveying equipment.


JC Stevens invents the Type A chart recorder, the first continuous stage recording device. This original design is the basis for today’s Type A and Type F recorders.