Low Flow - Single Point Measurements
[III-A1]

I want to make measurements in rivers/lakes/streams. [change]
My interest in rivers/lakes is measuring low flows... [change]
...at a single point. [change]

	[left] All of our Acoustic Doppler Velocimeter (ADV) family of instruments (ADV, MicroADV, ADVOcean) are capable of point measurements in extremely low flows (less than 0.1 cm/s).
	In addition, our Argonaut-ADV [left] and FlowTracker Handheld ADV [right] provide simple, low-cost solutions for point measurements in low flows.

Typical ADV Applications for Single-Point, Low-Flow Measurements

	A researcher from the U.S. Geological Survey at Stennis, MS prepares tripod-mounted ADVs for a study of the extremely low flow fields of the Florida Everglades. This research has documented subsurface velocity maxima of roughly 8 mm/s in the vertical structure of the flow field (heavy algae growth on the surface inhibits shallow flow). The image to the left was graciously provided by Jon Lee of the USGS.
	The Argonaut-ADV is an excellent tool for flow measurement in marshes, rivers, and streams in depths as shallow as 2 cm. Optional compass/tilt, pressure, pollution, temperature, and salinity sensors can be fully integrated into the package.
	The FlowTracker Handheld ADV uses the ADV technology in a compact, hand-held package to make accurate, high-precision water velocity measurements in natural streams, weirs/flumes, and open channels related to irrigation, stormwater, water treatment, and mining. Designed with the field user in mind, the FlowTracker easily attaches to top-setting wading rods and features an automatic discharge computation program that is based on USGS/ISO methods.

• ADV Details
• ADVOcean Details
• MicroADV Details
• Argonaut-ADV Details
• FlowTracker Handheld ADV Details
• ADV Family of Products
• Request info/ask questions about Low-Flow/Single-Point/River systems