River Health in the New South Wales Lower North Coast, Hunter and Central Coast Catchments

A report of AusRivAS assessments 1994 - 1999
Grant Hose and Eren Turak
Environment Protection Agency, 2004
ISBN 0 642 55099 9 ISSN 1447-1280

Mann570 - Gloucester River at Koorabah

Site Condition Summary
Sampling Data and Assessments
Site report cards

Site Condition Summary

This site on the Gloucester River was just upstream of its junction with the Manning River. On the left bank, the riparian zone was native forest, beyond which the land had been cleared. The riparian zone on the right bank had been partly cleared to provide water frontage for a residential dwelling. Some exotic plants were present on both banks.

The instream habitat and water quality appeared undisturbed. Water quality variables were all within expected ranges.

AusRivAS assessments of the edge (O/E-Taxa value 0.90) and riffle (O/E-Taxa value 0.88) habitats indicated rich macroinvertebrate communities were present in each.

Location Map

Location Details
Map Name	Bundook 9334-3-S
Map Zone	56
Map Scale	1:25000
Easting	415900
Northing	6472800
Distance from source (m)	102161
Elevation (m asl)	50
Average Annual Rainfall (mm)	1100

Single Season Assessments

Edge
	Spring '99
	15-Dec-99
O/E Taxa	0.90
Band	A
O/E SIGNAL	0.96

Riffle
	Spring '99
	15-Dec-99
O/E Taxa	0.88
Band	A
O/E SIGNAL	1.04

Combined Season Assessments

Edge

Riffle

Taxa Collected

X= Taxa Predicted & Collected, O = Taxa Predicted & NOT Collected, + = Taxa Collected & NOT Predicted

Edge
			Spring '99
Phylum	Class/Order	Family	15-Dec-99
Annelida	Oligochaeta		+
Arachnida	Hydracarina		X
Crustacea	Decapoda	Atyidae	X
Crustacea	Decapoda	Palaemonidae	+
Insecta	Coleoptera	Dytiscidae	O
Insecta	Coleoptera	Elmidae	O
Insecta	Coleoptera	Hydraenidae	+
Insecta	Coleoptera	Hydrophilidae	X
Insecta	Diptera	Chironominae	X
Insecta	Diptera	Orthocladiinae	X
Insecta	Diptera	Tanypodinae	X
Insecta	Ephemeroptera	Baetidae	X
Insecta	Ephemeroptera	Caenidae	X
Insecta	Ephemeroptera	Leptophlebiidae	X
Insecta	Hemiptera	Corixidae	X
Insecta	Hemiptera	Gerridae	X
Insecta	Hemiptera	Veliidae	X
Insecta	Odonata	Gomphidae	O
Insecta	Odonata	Isostictidae	+
Insecta	Odonata	Libellulidae	O
Insecta	Trichoptera	Calamoceratidae	O
Insecta	Trichoptera	Ecnomidae	+
Insecta	Trichoptera	Hydroptilidae	O
Insecta	Trichoptera	Leptoceridae	X
Mollusca	Gastropoda	Thiaridae	+

X= Taxa Predicted & Collected, O = Taxa Predicted & NOT Collected, + = Taxa Collected & NOT Predicted

Riffle
			Spring '99
Phylum	Class/Order	Family	15-Dec-99
Platyhelminthes	Turbellaria		O
Annelida	Oligochaeta	Oligochaeta	X
Arachnida	Hydracarina	Hydracarina	X
Crustacea	Decapoda	Atyidae	O
Insecta	Coleoptera	Elmidae	X
Insecta	Coleoptera	Psephenidae	X
Insecta	Diptera	Tipulidae	X
Insecta	Diptera	Simuliidae	X
Insecta	Diptera	Tanypodinae	X
Insecta	Diptera	Orthocladiinae	X
Insecta	Diptera	Chironominae	O
Insecta	Ephemeroptera	Baetidae	X
Insecta	Ephemeroptera	Leptophlebiidae	X
Insecta	Ephemeroptera	Caenidae	O
Insecta	Lepidoptera	Pyralidae	+
Insecta	Megaloptera	Corydalidae	X
Insecta	Odonata	Gomphidae	X
Insecta	Odonata	Libellulidae	+
Insecta	Plecoptera	Gripopterygidae	X
Insecta	Trichoptera	Hydrobiosidae	O
Insecta	Trichoptera	Philopotamidae	X
Insecta	Trichoptera	Hydropsychidae	X
Insecta	Trichoptera	Conoesucidae	O
Insecta	Trichoptera	Leptoceridae	O

Water Quality Data

	Autumn '99	Spring '99
Variable	13-May-99	15-Dec-99
Water Temperature (°C)	16.3	22.7
Conductivity (µS/Cm)	135	100
Dissolved Oxygen (mg/L)	10.1	7.4
Alkalinity (mg CaCO₃ /L)	56	18
pH	7.82	8.3
Turbidity (NTU)	1.7	1
Low Total Phosphorus (µg/L)	14	37
Free Reactive Phosphorus (µg/L)	7	16
NOx Nitrogen (µg/L)	2	10
Total Kjeldahl Nitrogen (mg/L)	<0.3	0.36
Ammonia (µg/L)	7	11
Nitrate (µg/L)	1	9
Nitrite (µg/L)	<1	<1

Key

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