Sequoia has been building instruments for rivers, lakes, and reservoirs since 1995. For rivers, the LISST-SL2 is our most capable sediment monitoring instrument, delivering real-time point-integrated, depth-integrated, and isokinetic measurements from a bridge, cableway, or boat. The LISST-Portable|XR brings laser diffraction particle sizing to the field or the lab in a battery-powered benchtop package and has proven popular amongst hydropower operators.

The LISST-Logger, a submersible six-channel RS-232 datalogger, and a range of rechargeable and non-rechargeable submersible battery packs can power both Sequoia instruments as well as many 3rd party instruments.