1.1 These terms are to be used by persons involved in collecting, reporting, and interpreting information pertaining to sedimentation and hydrologic processes as they apply in the development, use, control, and conservation of water and land resources.

1.2 Some listed terms and definitions are from other ASTM standards and the source document is given in bold type at the end of the definition.

1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.