ASTM D1941-91(2013)
Standard Test Method for Open Channel Flow Measurement of Water with the Parshall Flume

Standard No.

ASTM D1941-91(2013)

Release Date

1991

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D1941-21

Latest

ASTM D1941-21

Scope

5.1 Flume designs are available for throat sizes of 1 in. (2.54 cm) to 50 ft (15.2 m) which cover maximum flows of 0.2 to 3000 ft³/s (0.0057 to 85 m³/s) (1) and (2)⁴. They can therefore be applied to a wide range of flows, with head losses that are moderate.

5.2 The flume is self-cleansing for moderate solids transport and therefore is suited for wastewater and flows with sediment.

1.1 This test method covers measurement of the volumetric flowrate of water and wastewater in open channels with the Parshall flume.

1.1.1 Information related to this test method can be found in ISO 1438 and ISO 4359.

1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

ASTM D1941-91(2013) Referenced Document

• ASTM D1129 Standard Terminology Relating to Water*， 1999-04-20 Update
• ASTM D2777 Standard Practice for Determination of Precision and Bias of Applicable Methods of Committee D-19 on Water*， 1998-04-20 Update
• ASTM D3858 Standard Test Method for Open-Channel Flow Measurement of Water by Velocity-Area Method*， 1995-04-20 Update
• ISO 1438 Hydrometry - Open channel flow measurement using thin-plate weirs*， 2017-04-01 Update
• ISO 4359 Flow measurement structures — Rectangular, trapezoidal and U-shaped flumes*， 2022-12-19 Update
• ISO 555 

ASTM D1941-91(2013) history

• 2021 ASTM D1941-21 Standard Test Method for Open Channel Flow Measurement of Water with the Parshall Flume
• 1991 ASTM D1941-91(2013) Standard Test Method for Open Channel Flow Measurement of Water with the Parshall Flume
• 1991 ASTM D1941-91(2007) Standard Test Method for Open Channel Flow Measurement of Water with the Parshall Flume
• 1991 ASTM D1941-91(2001) Standard Test Method for Open Channel Flow Measurement of Water with the Parshall Flume
• 2001 ASTM D1941-91(1996) Standard Test Method for Open Channel Flow Measurement of Water with the Parshall Flume