Subcommittee D19.07 on Sediment, Geomorphology and Open Channel Flow seeks participation for a new task group developing a “Standard Guide for Continuous Monitoring of Suspended-Sediment Concentration in Open Channel Flow Using Optical Instrumentation.” The task group will operate in Committee D19 on Water.

Manufacturers of optical equipment such as turbidity meters, and individuals experienced in this type of data collection are invited to join this activity.

The proposed guide will cover:

• Equipment and basic procedures for installation, operation, and calibration of optical equipment to determine the continuous or near-continuous concentration of suspended sediment in open channel flow.
• Nephelometers and backscatter-type meters to record data that can be correlated with mean cross-sectional suspended-sediment concentration data.

General principles will be emphasized; step-by-step instructions will be given in a few instances. ASTM membership is not required for this activity.

To participate or comment, contact Douglas G. Glysson, U.S. Geological Survey, Reston, Va. (phone: 703/648-5019). Committee D19 on Water meets Jan. 20-24 in Cocoa Beach, Fla. For meeting or membership details, contact Bruce Noe, manager, ASTM Technical Committee Operations (phone: 610/832-9719). //

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