Water Turbidity
Benchmark Value
Scoring Curve
This curve shows how a field measurement for this indicator would score across all available benchmark forms in this context. The scoring engine uses 8 benchmarks together — the OptimalRange form drives the primary score, while 7 guard(s) constrain the result.
Evidence & Context
Persistent turbidity values >10-15 NTU in streams within Temperate Dry Woodlands & Native Grasslands conservation areas would likely indicate a departure from the "best available condition" and signal the potential onset of mild ecological stress.
Water turbidity measured in Nephelometric Turbidity Units (NTU) indicating the lower limit of upper detrimental threshold for ecological stress in Conservation / Protected Natural Areas within Australian Temperate Dry Woodlands & Native Grasslands.
This benchmark marks the turbidity level above which mild ecological stress is likely to begin in protected natural areas of Australian temperate dry woodlands and native grasslands.
Exceeds "Excellent" status; indicates departure from best available condition and potential onset of mild ecological stress.
Sources (1)
ANZECC (2000) Australian and New Zealand Guidelines for Fresh and Marine Water Quality.
View SourceSupporting Sources (2)
Additional references from the underlying research that informed this benchmark.
Feral horses (Equus caballus) increase suspended sediment in subalpine streams
View Source
Upper Murrumbidgee Waterwatch Catchment Health Indicator Program - Upper Murrumbidgee Waterwatch
View Source