Sequoia - StreamSide testing at Sequoia

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Particle Size Analyzers

Suspended Sediment Sensors

Settling Velocity Sensors

Optical VSF Sensors

Radiative Transfer Models

Storm Runoff Sediment Sensor

Sediment Sensor for HydroPower

Industrial Sensors

Observational Studies

Instrument Development

LISST-StreamSide

Sequoia's LISST-StreamSide test installation
	Behind Sequoia's office in Bellevue,WA runs a small stream. We use this for testing the LISST-StreamSide.
	The LISST-StreamSide is enclosed in a small cabinet. Note the holes in the bottom for power and communication cables to and from the LISST-Pump, as well as drains for turbid water.
	In the cabinet there is room for the freshwater source, used for cleaning and automatic zscat. The LISST-StreamSide is at the bottom, together with the battery powering both the LISST-Pump and the LISST-StreamSide.
	The LISST-Pump is submerged in the stream.
	During rain storms the water level - and sediment concentration - goes up quite significantly. Note that the pump box is more submerged and less visible than on the picture above.
	The top plot shows the variability in concentration (µl l^-1) and rainfall (in hr^-1). Note peak in sediment concentration lagging peak in rainfall. The bottom plot shows the variability in mean size (µm) and rainfall (in hr^-1). Sediment size increases after the 2 rainfall peaks towards the end of the measurement period.

LISST-StreamSide Papers

Hubbart JA, Freeman G (2010): Sediment Laser Diffraction - A new approach to an old problem in the central US. Stormwater (October 2010): 36-44.

Hubbart JA, Gebo NA (2010): Quantifying the Effects of Land Use and Erosion - Particle class size analysis sheds light on the relationship between land use and suspended sediment. Erosion Control (November-December 2010): xx-xx.

Boes RM (2009). Real-time monitoring of suspended sediment concentration and particle size distribution in the headwater way of a high-head hydropower plant. Proc. 33rd IAHR Congress, Vancouver 11026: 4037-4044

Sequoia's LISST-StreamSide test installation