ASTM: D5413B: Recording water-level measurement devices (Test Method B)

Summary
Analytes
Revision
Data and Sites

Official Method Name

Standard Test Methods for Measurement of Water Levels in Open-Water Bodies

Current Revision

Reapproved 1997. Current edition approved May 15, 1993.

Media

WATER

Instrumentation

Recording Water Level Gages

Method Subcategory

Physical

Method Source

ASTM

Citation

Annual Book of ASTM Standards, Section 11, Water and Environmental Technology, Volume 11.01, Water (I)

Brief Method Summary

This test method is applicable where continuous unattended records of water level or discharge are required. Procedures described in Test Method A are usually used to set these recording devices to the correct datum. Devices, generically referred to as water-level recorders included in this test method must be capable of recording stage and the time and date at which the stage occurred.
Recorders may sense water level by direct mechanical connection, usually by float-counterweight and tape or cable, by gas purge manometer systems (bubble gages), or by electronic water level sensors (pressure transducer or acoustic devices). Recorders may retain data in graphical, analog, digital, or other format. Recorders are available that can remain unattended for periods from one week to longer than six months.

Scope and Application

These test methods cover equipment and procedures used in obtaining water levels of rivers, lakes, and reservoirs or other water bodies. The procedures detailed in these test methods are widely used by those responsible for investigations of streams, lakes, reservoirs, and estuaries, for example, the U.S. Agricultural Research Service, the U.S. Army Corp of Engineers, and the U.S. Geological Survey

Applicable Concentration Range

Interferences

None indicated.

Quality Control Requirements

Sample Handling

Maximum Holding Time

Relative Cost

Greater than $400

Sample Preparation Methods

This method has 1 analyte associated with it.

Analyte	Detection Level	Bias	Precision	Pct False Positive	Pct False Negative	Spiking Level
Water level(E-11994) Water level	N/A	N/A	N/A

Precision Descriptor Notes:	Recording gages are subject to mechanical errors such as gear lash, chain sprocket lash, temperature or mechanical dimensional changes, leaking floats, mechanical tolerance caused by lack of lubrication, or infiltration of dust or dirt, and numerous other mechanical problems. Additional errors in stilling well data are caused by the changing position of the float and counterweight, the amount of submerged float in the water, especially after the counterweight submerges at high stages, and errors or stage lags in intake pipes connecting the stilling well to the waterbody.
Detection Level Note:	None.

Precision Descriptor Notes:

Recording gages are subject to mechanical errors such as gear lash, chain sprocket lash, temperature or mechanical dimensional changes, leaking floats, mechanical tolerance caused by lack of lubrication, or infiltration of dust or dirt, and numerous other mechanical problems. Additional errors in stilling well data are caused by the changing position of the float and counterweight, the amount of submerged float in the water, especially after the counterweight submerges at high stages, and errors or stage lags in intake pipes connecting the stilling well to the waterbody.

Detection Level Note:

None.

Revision	PDF/Link
Reapproved 1997. Current edition approved May 15, 1993.

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ASTM: D5413B: Recording water-level measurement devices (Test Method B)

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