SL 2.1-1998
General prineiple quantities,units and symbols.Water resources and hydropower (English Version)

Standard No.

SL 2.1-1998

Language

Chinese, Available in English version

Release Date

1998

Published By

Professional Standard - Water Conservancy

Status

Be replaced 2015-01

Replace By

SL 2-2014

SL 251-2000

Latest

SL 221-2019

SL/T 291-2020

Scope

This standard applies to the determination and use of quantities, units and symbols in the technical field of water conservancy and hydropower. This standard is one of three water conservancy and hydropower quantity and unit standards. The three standards are: SL 2.1-1998 General principles for water conservancy and hydropower quantities, units and symbols; SL 2.2-1998 Water conservancy and hydropower general quantities and units; SL 2.3-1998 Water conservancy and hydropower professional quantities and units.

SL 2.1-1998 history

• 2019 SL 221-2019 Procedures for preparation of water energy development planning for small and medium-sized rivers
• 2017 SL 261-2017 lake code
• 2015 SL 201-2015 Code for river basin planning
• 1997 SL 201-1997 Regulation for compilation of river basin planning

SL 2.1-1998 General prineiple quantities,units and symbols.Water resources and hydropower was changed to SL 2-2014 Quantities and units in water resources and hydropower.