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Sediments

Indicator guidelines: sedimentation/erosion rates

Estuarine, coastal and marine habitat condition

This document presents the recommended monitoring guidelines for collecting, collating and reporting information on sedimentation/erosion rates for national, state/territory and regional application.

Indicator guidelines: nutrient concentrations in the water column and/or sediments

Estuarine, coastal and marine habitat condition

This document presents the recommended monitoring guidelines for collecting, collating and reporting information on nutrient concentrations in the water column and/or sediments for national, state/territory and regional application.

Polyacrylamides in Irrigated Agriculture

Polyacrylamide (PAM) has been sold in the United States since 1995 for reducing irrigation-induced erosion and enhancing infiltration. PAM’s soil stabilizing and flocculating properties have also substantially improved runoff water quality by reducing sediments, N, ortho and total P, COD, pesticides, weed seeds, and microorganisms in runoff. The first series of practical field tests of (more)...

Investigation improvement to irrigation drainage systems

NPSI Factsheet No. 4

The Goulburn Broken Catchment Management Authority identified irrigation drainage as contributing 47% (1999) of the total catchment phosphorus loads to the Murray River each year. Environment Protection Authority guidelines for managing environmental impacts of construction projects, in this case the mobilisation and transport of sediments in both new and old drainage systems, also highlighted the need for appropriate drain construction and maintenance techniques. In response, this project (more)...