| PD ISO/TR 11330:1997 | Determination of volume of water and water level in lakes and reservoirs | Current |
| BS ISO 4359:2013 | Flow measurement structures. Rectangular, trapezoidal and U-shaped flumes | Current |
| BS ISO/TS 15769:2000 | Hydrometric determination. Liquid flow in open channels and partly filled pipes. Guidelines for the application of Doppler-based flow measurements | Withdrawn |
| BS EN ISO 4375:2004 | Hydrometric determinations. Cableway systems for stream gauging | Current |
| BS ISO 4377:2002 | Hydrometric determinations. Flow measurement in open channels using structures. Flat-V weirs | Withdrawn |
| BS ISO 4377:2012 | Hydrometric determinations. Flow measurement in open channels using structures. Flat-V weirs | Current |
| BS ISO 14139:2000 | Hydrometric determinations. Flow measurements in open channels using structures. Compound gauging structures - Compound gauging structures | Current |
| BS ISO 8368:1999 | Hydrometric determinations. Flow measurements in open channels using structures. Guidelines for the selection of structure | Current |
| BS EN ISO 772:2001 | Hydrometric determinations. Vocabulary and symbols | Withdrawn |
| DD CEN ISO/TS 25377:2007 | Hydrometric uncertainty guide | Current |
| PD ISO/TR 24578:2012 | Hydrometry. Acoustic Doppler profiler. Method and application for measurement of flow in open channels | Current |
| BS ISO 3455:2007 | Hydrometry. Calibration of current-meters in straight open tanks | Current |
| BS ISO 3454:2008 | Hydrometry. Direct depth sounding and suspension equipment | Current |
| BS ISO 4366:2007 | Hydrometry. Echo sounders for water depth measurements | Current |
| BS ISO 9825:2005 | Hydrometry. Field measurement of discharge in large rivers and rivers in flood | Current |
| BS ISO 26906:2009 | Hydrometry. Fishpasses at flow measurement structures | Current |
| DD ISO/TS 3716:2006 | Hydrometry. Functional requirements and characteristics of suspended-sediment samplers | Current |
| BS ISO 15769:2010 | Hydrometry. Guidelines for the application of acoustic velocity meters using the Doppler and echo correlation methods | Current |
| BS EN ISO 6416:2005 | Hydrometry. Measurement of discharge by the ultrasonic (acoustic) method | Current |
| BS ISO 2425:2010 | Hydrometry. Measurement of liquid flow in open channels under tidal conditions | Current |
| BS EN ISO 748:2007 | Hydrometry. Measurement of liquid flow in open channels using current-meters or floats | Current |
| PD ISO/TR 9212:2006 | Hydrometry. Measurement of liquid flow in open channels. Methods of measurement of bedload discharge | Current |
| DD ISO/TS 24154:2005 | Hydrometry. Measuring river velocity and discharge with acoustic Doppler profilers | Current |
| BS ISO 6421:2012 | Hydrometry. Methods for assessment of reservoir sedimentation | Current |
| BS ISO 3846:2008 | Hydrometry. Open channel flow measurement using rectangular broad-crested weirs | Current |
| BS ISO 1438:2008 | Hydrometry. Open channel flow measurement using thin-plate weirs | Current |
| BS ISO 4360:2008 | Hydrometry. Open channel flow measurement using triangular profile weirs | Current |
| BS ISO 2537:2007 | Hydrometry. Rotating-element current-meters | Current |
| BS ISO 1088:2007 | Hydrometry. Velocity-area methods using current-meters. Collection and processing of data for determination of uncertainties in flow measurement | Current |
| BS EN ISO 772:2011 | Hydrometry. Vocabulary and symbols | Current |
| BS EN ISO 4373:2008 | Hydrometry. Water level measuring devices | Current |
| BS ISO 4365:2005 | Liquid flow in open channels. Sediment in streams and canals. Determination of concentration, particle size distribution and relative density | Current |
| BS ISO 4359:1983 | Liquid flow measurement in open channels. Rectangular, trapezoidal and U-shaped flumes | Withdrawn |
| BS ISO 1100-2:1998 | Measurement of liquid flow in open channels - Determination of the stage-discharge relation | Current, Work in Hand |
| BS 3680-7:2000 | Measurement of liquid flow in open channels - Specification of equipment for the measurement of water level | Withdrawn |
| BS 3680-3Q:2002 | Measurement of liquid flow in open channels - Guidelines for safe working practice in river flow measurement | Withdrawn |
| BS 3680-5:1992 | Measurement of liquid flow in open channels - Slope area method of estimation | Current |
| BS 3680-1:1991 | Measurement of liquid flow in open channels - Glossary of terms | Withdrawn |
| BS 3680-6:1973 | Measurement of liquid flow in open channels - Measurement of flow in tidal channels | Withdrawn |
| BS 3680-7:1971 | Measurement of liquid flow in open channels - The measurement of liquid level (stage) | Withdrawn |
| BS 3680-6:1995 | Measurement of liquid flow in open channels - Guide to measurement of flow in tidal channels | Withdrawn |
| BS ISO 2425:1999+A1:2003 | Measurement of liquid flow in open channels under tidal conditions | Withdrawn |
| BS 3680-2A:1995 | Measurement of liquid flow in open channels. Dilution methods - General | Current |
| BS 3680-2B:1993 | Measurement of liquid flow in open channels. Dilution methods - Methods of measurement using radioactive tracers | Withdrawn |
| BS 3680-2D:1993 | Measurement of liquid flow in open channels. Dilution methods - Methods of measurement using fluorescent tracers | Current |
| BS 3680-2C:1993 | Measurement of liquid flow in open channels. Dilution methods - Methods of measurement using chemical tracers | Current |
| BS ISO TR 11974:1997 | Measurement of liquid flow in open channels. Electromagnetic current meters | Withdrawn |
| BS ISO TR 8363:1997 | Measurement of liquid flow in open channels. General guidelines for the selection of method | Current |
| BS 3680-8H:1996 | Measurement of liquid flow in open channels. Measuring instruments and equipment - Method of specifying the performance of hydrometric equipment | Current |
| BS 3680-8A:1989 | Measurement of liquid flow in open channels. Measuring instruments and equipment - Current meters incorporating a rotating element | Withdrawn |
| BS 3680-8B:1983 | Measurement of liquid flow in open channels. Measuring instruments and equipment - Recommendations for direct depth sounding and suspension equipment | Withdrawn |
| BS 3680-8F:1986 | Measurement of liquid flow in open channels. Measuring instruments and equipment - Hydrometric data transmission systems: general | Withdrawn |
| BS 3680-8C:1980 | Measurement of liquid flow in open channels. Measuring instruments and equipment - Calibration of rotating-element current-meters in straight open tanks | Withdrawn |
| BS 3680-8D:1980 | Measurement of liquid flow in open channels. Measuring instruments and equipment - Cableway system for stream gauging | Withdrawn |
| BS 3680-10D:1986 | Measurement of liquid flow in open channels. Sediment transport - Methods for determination of concentration, particle size distribution and relative density of sediment in streams and canals | Withdrawn |
| BS 3680-10C:1996 | Measurement of liquid flow in open channels. Sediment transport - Guide to methods of sampling of sand-bed and cohesive-bed materials | Current |
| BS 3680-10E:1993 | Measurement of liquid flow in open channels. Sediment transport - Sampling and analysis of gravel bed material | Current |
| BS 3680-10B:1980 | Measurement of liquid flow in open channels. Sediment transport - Measurement of suspended sediment | Current, Work in Hand |
| BS ISO 9123:2001 | Measurement of liquid flow in open channels. Stage-fall-discharge relationships | Current |
| BS 3680-3E:1993 | Measurement of liquid flow in open channels. Stream flow measurement - Measurement of discharge by the ultrasonic (acoustic) method | Withdrawn |
| BS 3680-3B:1997 | Measurement of liquid flow in open channels. Stream flow measurement - Guide for the establishment and operation of a gauging station | Current, Work in Hand |
| BS 3680-3G:1990 | Measurement of liquid flow in open channels. Stream flow measurement - General guidelines for the selection of methods | Withdrawn |
| BS 3680-3Q:1993 | Measurement of liquid flow in open channels. Stream flow measurement - Code of practice for safe practice in stream gauging | Withdrawn |
| BS 3680-3H:1993 | Measurement of liquid flow in open channels. Stream flow measurement - Electromagnetic method using a full-channel-width coil | Withdrawn |
| BS 3680-3J:1989 | Measurement of liquid flow in open channels. Stream flow measurement - Guide to the measurement of discharge using three verticals | Withdrawn |
| BS 3680-3M:1990 | Measurement of liquid flow in open channels. Stream flow measurement - Guide to the methods of measuring high discharges in rivers | Withdrawn |
| BS 3680-3F:1986 | Measurement of liquid flow in open channels. Stream flow measurement - Collection and processing of data for determination of errors in measurement | Withdrawn |
| BS 3680-3A:1980 | Measurement of liquid flow in open channels. Stream flow measurement - Velocity-area methods | Withdrawn |
| BS 3680-3B:1983 | Measurement of liquid flow in open channels. Stream flow measurement - Guide for establishment and operation of a gauging station | Withdrawn |
| BS 3680-3C:1983 | Measurement of liquid flow in open channels. Stream flow measurement - Methods for determination of the stage-discharge relation | Withdrawn |
| BS 3680-3D:1980 | Measurement of liquid flow in open channels. Stream flow measurement - Moving-boat method | Current |
| BS ISO 748:1997 | Measurement of liquid flow in open channels. Velocity-area methods | Withdrawn |
| BS EN ISO 748:2000 | Measurement of liquid flow in open channels. Velocity-area methods | Withdrawn |
| BS ISO/TS 15768:2000 | Measurement of liquid velocity in open channels. Design, selection and use of electromagnetic current meters | Current |
| BS ISO 9213:2004 | Measurement of total discharge in open channels. Electromagnetic method using a full-channel-width coil | Current |
| BS 3680-9A:1971 | Methods of measurement of liquid flow in open channels. Water level instruments - Specification for the installation and performance of pressure actuated liquid level measuring equipment | Withdrawn |
| BS 3680-9B:1981 | Methods of measurement of liquid flow in open channels. Water level instruments - Float-operated water level recorders (mechanical and electromechanical) | Withdrawn |
| BS 3680-4C:1981 | Methods of measurement of liquid flow in open channels. Weirs and flumes - Flumes | Withdrawn |
| BS 3680-4B:1986 | Methods of measurement of liquid flow in open channels. Weirs and flumes - Triangular profile weirs | Withdrawn |
| BS 3680-4H:1986 | Methods of measurement of liquid flow in open channels. Weirs and flumes - Guide to the selection of flow gauging structures | Withdrawn |
| BS 3680-4I:1986 | Methods of measurement of liquid flow in open channels. Weirs and flumes - V-shaped broad crested weirs | Current |
| BS 3680-4E:1990 | Methods of measurement of liquid flow in open channels. Weirs and flumes - Rectangular broad-crested weirs | Withdrawn |
| BS 3680-4F:1990 | Methods of measurement of liquid flow in open channels. Weirs and flumes - Round nose horizontal broad-crested weirs | Current |
| BS 3680-4D:1989 | Methods of measurement of liquid flow in open channels. Weirs and flumes - Compound gauging structures | Withdrawn |
| BS 3680-4A:1981 | Methods of measurement of liquid flow in open channels. Weirs and flumes - Method using thin-plate weirs | Withdrawn |
| BS 3680-4G:1990 | Methods of measurement of liquid flow in open channels. Weirs and flumes - Flat-V weirs | Withdrawn |
