This specification is applicable to the observation of ice conditions in rivers, and can also be used for the observation of ice conditions in lakes, reservoirs and channels. The terms and symbols in this specification adopt the relevant provisions of the national standard GBJ95 86 "Standard of Terminology and Symbols for Hydrological Surveys". The units of measurement adopt the provisions of the "Method for the Use of Legal Units of Measurement of the People's Republic of China".
SL 59-1993 history
2015SL 59-2015 Specification for observation of ice regime in rivers
1993SL 59-1993 Technical standard for observations of ice regime in open channels