Sediment Properties - Sediment Transport in Irrigation Canals: A New Approach - page 56

water-sediment mixture. The concentration C g is expressed as the mass
in kg per unit of volume in m 3 ; the ratio of kg/m 3 can also be expressed
as ppm (parts per million). For concentrations lower than 16,000 ppm, it
can be assumed that 1 kg/m 3 is equivalent to 1000 ppm.
Both concentrations (by volume and by mass) are related by:

C g = C (3.21)

where:

= relative density (dimensionless)

= 1.65 for quartz particles in water

C = concentration of sediment by volume (percentage or ppm)

C g = concentration of sediment by mass (percentage or ppm)