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.  

2018 Read More »


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.

2015 Read More »


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.

2007 Read More »


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.

2004 Read More »


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.

2000 Read More »


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.

1998 Read More »


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.

1968 Read More »


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.

1947 Read More »


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.

1944 Read More »


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.

1942 Read More »


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

1937 Read More »

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.

1911 part 2 Read More »


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.

1911 Read More »