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

Mann20 - Manning River at Charity Crossing

Site Condition Summary
Sampling Data and Assessments
Site report cards

Site Condition Summary

This site was in the lowland section of the Manning River, surrounded by grazing country. The riparian zone had been degraded by cattle access, invasion by exotic plants and rubbish. These impacts had contributed to some bank erosion and degradation of the instream habitat.

Water quality was generally good with low levels of nutrients. However, in Spring 1997, nutrient concentrations were very high, which coincided with flooding in the river.

All assessments indicated a rich macroinvertebrate fauna were present (O/E-Taxa values mostly 0.9 or greater).

Location Map

Location Details
Map Name	Bundook 9334-3-S
Map Zone	56
Map Scale	1:25000
Easting	427500
Northing	6469900
Distance from source (m)	140879
Elevation (m asl)	10
Average Annual Rainfall (mm)	1100

Single Season Assessments

Edge
	Spring '95	Autumn '96	Spring '97	Autumn '98
	11-Oct-95	31-Mar-96	10-Oct-97	8-Apr-98
O/E Taxa	1.13	1.04	0.93	0.91
Band	A	A	A	A
O/E SIGNAL	1.02	0.99	1.00	0.95

Riffle

Combined Season

Edge
Seasons	SPR95AUT96	SPR97AUT98
Model	Eastern	Eastern
O/E Taxa	0.99	0.90
Band	A	A
O/E SIGNAL	1.04	0.98

Riffle

Taxa Collected

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

Edge
			Spring '95	Autumn '96	Spring '97	Autumn '98	Autumn '99	Spring '99
Phylum	Class/Order	Family	11-Oct-95	31-Mar-96	10-Oct-97	8-Apr-98	13-May-99	15-Dec-99
Arachnida	Hydracarina		O	X	X	X	O	X
Copepoda	Copepoda					+
Crustacea	Decapoda	Atyidae	X	X	X	X	X	X
Crustacea	Decapoda	Palaemonidae	+		+		+	+
Insecta	Coleoptera	Dytiscidae	X	X	X	X	O	O
Insecta	Coleoptera	Elmidae	X	X	X	X	O	O
Insecta	Coleoptera	Haliplidae				+
Insecta	Coleoptera	Hydraenidae	+					+
Insecta	Coleoptera	Hydrophilidae	X	X	X	X	X	X
Insecta	Collembola		+
Insecta	Diptera	Ceratopogonidae		+	+
Insecta	Diptera	Chironomidae		+
Insecta	Diptera	Chironominae	X	O	X	X	O	O
Insecta	Diptera	Culicidae			+
Insecta	Diptera	Orthocladiinae	X	X	O	O	O	O
Insecta	Diptera	Simuliidae				+
Insecta	Diptera	Tanypodinae	X	X	X	X	O	O
Insecta	Ephemeroptera	Baetidae	X	X	X	X	X	O
Insecta	Ephemeroptera	Caenidae	X	X	X	O	O	O
Insecta	Ephemeroptera	Leptophlebiidae	X	O	O	O	O	O
Insecta	Hemiptera	Corixidae	O	O	X	X	O	O
Insecta	Hemiptera	Gerridae	O	X	O	X	X	X
Insecta	Hemiptera	Hydrometridae						+
Insecta	Hemiptera	Veliidae	X	X	X	O	X	X
Insecta	Lepidoptera	Pyralidae				+
Insecta	Odonata	Aeshnidae				+
Insecta	Odonata	Coenagrionidae		+		+	O
Insecta	Odonata	Gomphidae	X	X	O	O	X	O
Insecta	Odonata	Libellulidae	X	X	O	X	X	X
Insecta	Odonata	Protoneuridae				+
Insecta	Trichoptera	Atriplectididae		+		+
Insecta	Trichoptera	Calamoceratidae	X	X	X	X	X	X
Insecta	Trichoptera	Ecnomidae	+
Insecta	Trichoptera	Hydropsychidae	+	+		+
Insecta	Trichoptera	Hydroptilidae	X	+	X			O
Insecta	Trichoptera	Leptoceridae	X	X	X	X	X	X
Mollusca	Bivalvia	Corbiculidae	+	+		+
Mollusca	Gastropoda	Hydrobiidae	+	+
Mollusca	Gastropoda	Lymnaeidae				+
Mollusca	Gastropoda	Physidae	X	+	O	+		O
Mollusca	Gastropoda	Thiaridae				+		+

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

Riffle
			Autumn '96	Autumn '99
Phylum	Class/Order	Family	31-Mar-96	13-May-99
Platyhelminthes	Turbellaria		O	O
Mollusca	Bivalvia	Corbiculidae	+
Annelida	Oligochaeta	Oligochaeta	X	X
Arachnida	Hydracarina	Hydracarina	O	O
Crustacea	Decapoda	Atyidae	X	O
Crustacea	Decapoda	Palaemonidae		+
Insecta	Coleoptera	Dytiscidae	+
Insecta	Coleoptera	Elmidae	X	O
Insecta	Coleoptera	Psephenidae	O	O
Insecta	Diptera	Tipulidae	X	O
Insecta	Diptera	Simuliidae	X	X
Insecta	Diptera	Diamesinae	+
Insecta	Diptera	Tanypodinae	X	O
Insecta	Diptera	Orthocladiinae	O	X
Insecta	Diptera	Chironominae	X	O
Insecta	Ephemeroptera	Baetidae	X	X
Insecta	Ephemeroptera	Leptophlebiidae	X	X
Insecta	Ephemeroptera	Caenidae	O	O
Insecta	Lepidoptera	Pyralidae	X	X
Insecta	Megaloptera	Corydalidae	X	X
Insecta	Odonata	Gomphidae	O	O
Insecta	Odonata	Corduliidae	O	O
Insecta	Plecoptera	Gripopterygidae	O	X
Insecta	Trichoptera	Hydrobiosidae	O	O
Insecta	Trichoptera	Glossosomatidae	+
Insecta	Trichoptera	Philopotamidae	X	O
Insecta	Trichoptera	Hydropsychidae	X	X
Insecta	Trichoptera	Leptoceridae	O	O

Water Quality Data

	Autumn '95	Spring '95	Autumn '96	Autumn '97	Spring '97	Autumn '98	Spring '98	Autumn '99	Spring '99
Variable	11-Apr-95	11-Oct-95	31-Mar-96	14-Apr-97	10-Oct-97	8-Apr-98	13-Oct-98	13-May-99	15-Dec-99
Water Temperature (°C)	17.6	21.6	23.9	20.6	18.9	25.5	18.5	16.9	25.9
Conductivity (µS/Cm)	118	128	56	149	146	146	167	155	200
Dissolved Oxygen (mg/L)	10.1	9.8	9	9.8	9.7	0.6	6.9		9.4
Alkalinity (mg CaCO₃ /L)	47	35	41	64	51	57	57	55	55
pH	7.84	8.1	7.88	7.82	7.5	8.72	8.44	8.5	8.7
Turbidity (NTU)	1	3	10	3.1	17	0	0	1.8	10
Low Total Phosphorus (µg/L)	18	16	26	18	54	14	19	<12	33
Free Reactive Phosphorus (µg/L)						7	11	9	14
NOx Nitrogen (µg/L)	40	10	10	10	80	4	3	4	8
Total Kjeldahl Nitrogen (mg/L)	<0.3	<0.3	<0.3	<0.3	0.71	<0.3	<0.3	<0.3	0.34
Ammonia (µg/L)						11	4	22	11
Nitrate (µg/L)						3	1	3	7
Nitrite (µg/L)						1	1	1	<1

Key

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