Archived water quality assessments
Ecological health
We collect two samples of macroinvertebrates, one from riffle
(or flowing water) habitat and one from edge (still water) habitat.
The diversity of the macroinvertebrate community is used to describe
ecological health as being in good,
moderate or poor
condition.
Ecological health assessment for November 2005
| Habitat |
Ecological health
|
| Edge |
Good
|
| Riffle |
Habitat not present
|
This site is often rated as being in good to moderate condition.
As this site is at a non-flowing waterhole in the Far North of
the State there is no riffle habitat available.
Ecological health assessment for May 2005
| Habitat |
Ecological health
|
| Edge |
Moderate
|
| Riffle |
Habitat not present
|
This site is a waterhole in the far north of the state with no
flow. It is often rated as being in moderate condition.
Water chemistry
The indicators that are measured in Yardaparinna Creek are nutrients
(nitrogen and phosphorus), turbidity and salinity.
The concentrations of these indicators are used to classify the
water chemistry as being in good,
moderate or poor
condition, according to the needs of aquatic ecosystem protection.
Water chemistry classification for October 2005 to March 2006
|
Indicator
|
Classification
|
|
|
Good
|
|
|
Good
|
|
|
Good
|
|
|
Good
|
|
|
Moderate
|
Total nitrogen and total phosphorus levels were lower than usual.
They have been classified as poor in previous results. The other
classifications are consistent with previous results. The amount
of nitrogen and phosphorous can increase as a result of animal
wastes being washed off farms during storms. Livestock and feral
animals may also foul the creek. Many rivers in the state's Far
North are naturally quite turbid due to the suspension of very
small clay particles. This site is sampled every three months
because of its remote location.
Water chemistry classification for April to September 2005
|
Indicator
|
Classification
|
|
|
Moderate
|
|
|
Poor
|
|
|
Moderate
|
|
|
Poor
|
|
|
Poor
|
The amount of nitrogen and phosphorous can increase as a result
of animal wastes being washed off farms during storms. Livestock
and feral animals may also foul waterholes . The water in several
river systems in the state's north is naturally quite turbid due
to the suspension of very small clay particles. The nutrient and
turbidity results for the recent samples are consistent with previous
results. This site is sampled every three months because of its
remote location.
This page was last modified 13-09-2007
|
