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

Mann102 - Manning River at Bradleys Reach

Site Condition Summary
Sampling Data and Assessments
Site report cards

Site Condition Summary

This site on the Manning River was just downstream of its confluence with the Gloucester River. The surrounding land was used for grazing, and as a result of cattle access to the river, the riparian zone and instream habitats were degraded.

Water quality appeared good, and physico-chemical analyses confirmed this. Nutrient concentrations were low on both sampling occasions and other variables were mostly within expected ranges.

AusRivAS assessments indicated varying degrees of impairment to the macroinvertebrate fauna. Assessments of the edge habitat indicated a greater degree of impairment than the single riffle habitat assessment. O/E-Taxa values for the edge indicated at least a 25 % loss of predicted taxa. Ephemeroptera (mayfly) families were poorly represented in these samples.

Location Map

Location Details
Map Name	Bundook 9334-3-S
Map Zone	56
Map Scale	1:25000
Easting	418300
Northing	6471900
Distance from source (m)	129536
Elevation (m asl)	10
Average Annual Rainfall (mm)	1100

Single Season Assessments

Edge
	Autumn '98	Spring '98
	8-Apr-98	13-Oct-98
O/E Taxa	0.64	0.73
Band	B	B
O/E SIGNAL	0.93	0.80

Riffle
	Autumn '98
	8-Apr-98
O/E Taxa	0.86
Band	B
O/E SIGNAL	0.96

Combined Season Assessments

Edge
Seasons	AUT98SPR98
Model	Eastern
O/E Taxa	0.60
Band	B
O/E SIGNAL	0.79

Riffle

Taxa Collected

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

Edge
			Autumn '98	Spring '98
Phylum	Class/Order	Family	8-Apr-98	13-Oct-98
Annelida	Oligochaeta		+
Arachnida	Hydracarina		X	X
Crustacea	Decapoda	Atyidae	X	X
Crustacea	Decapoda	Palaemonidae		+
Crustacea	Ostracoda			+
Insecta	Coleoptera	Dytiscidae	O	X
Insecta	Coleoptera	Elmidae	O	O
Insecta	Coleoptera	Hydrophilidae	X	X
Insecta	Diptera	Ceratopogonidae		+
Insecta	Diptera	Chironominae	X	X
Insecta	Diptera	Orthocladiinae	O	X
Insecta	Diptera	Simuliidae	+
Insecta	Diptera	Tanypodinae	O	X
Insecta	Ephemeroptera	Baetidae	X	O
Insecta	Ephemeroptera	Caenidae	O	O
Insecta	Ephemeroptera	Leptophlebiidae	O	O
Insecta	Hemiptera	Corixidae	O	O
Insecta	Hemiptera	Gerridae	X	O
Insecta	Hemiptera	Veliidae	X	O
Insecta	Odonata	Coenagrionidae	+	+
Insecta	Odonata	Corduliidae		+
Insecta	Odonata	Gomphidae	O	O
Insecta	Odonata	Libellulidae	X	X
Insecta	Trichoptera	Calamoceratidae	O	O
Insecta	Trichoptera	Ecnomidae	+
Insecta	Trichoptera	Hydroptilidae	+	X
Insecta	Trichoptera	Leptoceridae	X	X
Mollusca	Bivalvia	Corbiculidae	+	+
Mollusca	Gastropoda	Lymnaeidae	+
Mollusca	Gastropoda	Physidae	+	X
Mollusca	Gastropoda	Planorbidae	+
Mollusca	Gastropoda	Thiaridae	+	+

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

Riffle
			Autumn '98
Phylum	Class/Order	Family	8-Apr-98
Platyhelminthes	Turbellaria		O
Mollusca	Gastropoda	Physidae	+
Mollusca	Bivalvia	Corbiculidae	+
Annelida	Hirudinea	Glossiphoniidae	+
Annelida	Oligochaeta	Oligochaeta	X
Arachnida	Hydracarina	Hydracarina	X
Crustacea	Decapoda	Atyidae	X
Crustacea	Decapoda	Palaemonidae	+
Insecta	Coleoptera	Elmidae	X
Insecta	Coleoptera	Psephenidae	O
Insecta	Diptera	Tipulidae	O
Insecta	Diptera	Simuliidae	X
Insecta	Diptera	Dolichopodidae	+
Insecta	Diptera	Tanypodinae	X
Insecta	Diptera	Orthocladiinae	X
Insecta	Diptera	Chironominae	X
Insecta	Ephemeroptera	Baetidae	X
Insecta	Ephemeroptera	Leptophlebiidae	X
Insecta	Ephemeroptera	Caenidae	O
Insecta	Lepidoptera	Pyralidae	X
Insecta	Megaloptera	Corydalidae	X
Insecta	Odonata	Amphipterygidae	+
Insecta	Odonata	Gomphidae	X
Insecta	Odonata	Corduliidae	O
Insecta	Odonata	Libellulidae	+
Insecta	Plecoptera	Gripopterygidae	O
Insecta	Trichoptera	Hydrobiosidae	O
Insecta	Trichoptera	Hydroptilidae	+
Insecta	Trichoptera	Philopotamidae	X
Insecta	Trichoptera	Hydropsychidae	X
Insecta	Trichoptera	Ecnomidae	+
Insecta	Trichoptera	Leptoceridae	O

Water Quality Data

Water Quality Data
	Autumn '98	Spring '98
Variable	8-Apr-98	13-Oct-98
Water Temperature (°C)	23.8	20.4
Conductivity (µS/Cm)	142	160
Dissolved Oxygen (mg/L)	5.6	6.3
Alkalinity (mg CaCO₃ /L)	57	55
pH	8.99	8.68
Turbidity (NTU)	0.5	0
Low Total Phosphorus (µg/L)	14	22
Free Reactive Phosphorus (µg/L)	5	15
NOx Nitrogen (µg/L)	1	2
Total Kjeldahl Nitrogen (mg/L)	<0.3	<0.3
Ammonia (µg/L)	6	8
Nitrate (µg/L)	<1	<1
Nitrite (µg/L)	0	1

Key

Links to another web site
Opens a pop-up window

Water

Publications