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

Mann13 - Manning River at Henrys Bridge

Site Condition Summary
Sampling Data and Assessments
Site report cards

Site Condition Summary

This site on the upper Manning River was within the Barrington Tops State Forest. The surrounding land was covered in native forest however, the riparian zone had been partly cleared for a picnic area. There had also been some invasion of the riparian zone by exotic plant species such as broom and blackberry.

The instream habitat and water quality appeared good on all sampling occasions. Fine silt deposits that covered the substrate were noted in Autumn 1997 but not on other occasions. All water quality variables were within expected ranges.

AusRivAS assessments generally indicated the site to be in good condition. Most assessments were in band A or X, with occasional lower assessments in band B. These most likely reflect chance variability in the assessments, and should not detract from the overall assessment of a rich macroinvertebrate community at the site.

Location Map

Location Details
Map Name	Moonan Brook 9134-2-S
Map Zone	56
Map Scale	1:25000
Easting	357300
Northing	8311
Distance from source (m)	6471700
Elevation (m asl)	1200
Average Annual Rainfall (mm)	750

Single Season Assessments

Edge
	Autumn '95	Spring '97	Autumn '98	Spring '98	Autumn '99	Spring '99
	8-Apr-95	16-Oct-97	8-Apr-98	13-Oct-98	12-May-99	14-Dec-99
O/E Taxa	1.19	0.87	1.24	0.87	0.94	0.79
Band	X	A	X	A	A	B
O/E SIGNAL	0.99	1.04	1.02	1.01	1.02	1.19

Riffle
	Spring '94	Spring '95	Autumn '96	Autumn '97	Autumn '98	Spring '98	Autumn '99	Spring '99
	3-Oct-94	4-Oct-95	1-Apr-96	15-Apr-97	8-Apr-98	13-Oct-98	12-May-99	14-Dec-99
O/E Taxa	0.96	1.02	1.02	1.14	0.83	1.20	1.02	0.96
Band	A	A	A	X	B	X	A	A
O/E SIGNAL	0.98	1.00	1.03	0.98	1.09	1.02	1.02	1.07

Combined Season Assessments

Edge
Seasons	SPR97AUT98	AUT98SPR98	SPR98AUT99	AUT99SPR99
Model	Eastern	Eastern	Eastern	Eastern
O/E Taxa	1.21	1.16	0.72	0.97
Band	X	A	B	A
O/E SIGNAL	1.02	1.03	1.04	1.11

Riffle
Seasons	SPR95AUT96	AUT98SPR98	SPR98AUT99	AUT99SPR99
O/E Taxa	1.09	1.09	1.14	1.09
Band	A	A	X	A
O/E SIGNAL	0.99	1.05	1.02	1.02

Taxa Collected

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

Edge
			Autumn '95	Spring '97	Autumn '98	Spring '98	Autumn '99	Spring '99
Phylum	Class/Order	Family	8-Apr-95	16-Oct-97	8-Apr-98	13-Oct-98	12-May-99	14-Dec-99
Annelida	Oligochaeta		+		+	+	+
Arachnida	Hydracarina		X	X	X	X	O	X
Crustacea	Amphipoda	Ceinidae		+
Crustacea	Amphipoda	Eusiridae						+
Crustacea	Amphipoda	Paramelitidae	+
Crustacea	Isopoda	Phreatoicidae						+
Insecta	Coleoptera	Dytiscidae	+	O		O		O
Insecta	Coleoptera	Elmidae	O	O	X	O	X	X
Insecta	Coleoptera	Gyrinidae	O		O
Insecta	Coleoptera	Hydraenidae		+				+
Insecta	Coleoptera	Hydrophilidae		X		O		O
Insecta	Coleoptera	Psephenidae			+	+	+
Insecta	Coleoptera	Scirtidae	X	+	X		O	+
Insecta	Collembola		+
Insecta	Diptera	Athericidae				+		+
Insecta	Diptera	Ceratopogonidae		X		X		O
Insecta	Diptera	Chironomidae	+
Insecta	Diptera	Chironominae	X	O	X	X	X	O
Insecta	Diptera	Diamesinae						+
Insecta	Diptera	Dixidae	X	O	X	O	O	X
Insecta	Diptera	Empididae	+
Insecta	Diptera	Orthocladiinae	X	X	O	X	X	X
Insecta	Diptera	Podonominae	+			+
Insecta	Diptera	Simuliidae	+
Insecta	Diptera	Tanypodinae	X	X	X	X	X	X
Insecta	Diptera	Tipulidae		+				+
Insecta	Ephemeroptera	Baetidae	X	X	X	X	X	X
Insecta	Ephemeroptera	Caenidae	X	X	X	X	X	O
Insecta	Ephemeroptera	Leptophlebiidae	X	X	X	X	X	X
Insecta	Ephemeroptera	Oniscigastridae		+		+		+
Insecta	Hemiptera	Corixidae	X	O	X	O	O	O
Insecta	Hemiptera	Gerridae	X		X		O	+
Insecta	Hemiptera	Notonectidae	O		+
Insecta	Hemiptera	Pentatomidae	+
Insecta	Hemiptera	Veliidae	X	X	X	X	X	X
Insecta	Mecoptera	Nannochoristidae						+
Insecta	Odonata	Corduliidae	+			+
Insecta	Odonata	Synlestidae		O	+	O	O	O
Insecta	Plecoptera	Eustheniidae	+
Insecta	Plecoptera	Gripopterygidae	X	X	X	X	X	X
Insecta	Plecoptera	Notonemouridae		+	+			+
Insecta	Trichoptera	Atriplectididae			+	+
Insecta	Trichoptera	Calamoceratidae	X		X	+	X	+
Insecta	Trichoptera	Conoesucidae		+				+
Insecta	Trichoptera	Ecnomidae			+	+
Insecta	Trichoptera	Helicopsychidae				+
Insecta	Trichoptera	Hydrobiosidae	+		+			+
Insecta	Trichoptera	Hydropsychidae	+				+
Insecta	Trichoptera	Leptoceridae	X	X	X	X	X	X
Insecta	Trichoptera	Philorheithridae	+	+	+		X
Platyhelminthes	Turbellaria	Dugesiidae						+

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

Riffle
			Spring '94	Spring '95	Autumn '96	Autumn '97	Autumn '98	Spring '98	Autumn '99	Spring '99
Phylum	Class/Order	Family	3-Oct-94	4-Oct-95	1-Apr-96	15-Apr-97	8-Apr-98	13-Oct-98	12-May-99	14-Dec-99
Platyhelminthes	Turbellaria							+
Annelida	Oligochaeta	Oligochaeta	X	X	X	X	O	X	X	X
Arachnida	Hydracarina	Hydracarina	O	O	X	X	O	X	X	O
Insecta	Coleoptera	Nitidulidae		+
Crustacea	Amphipoda	Eusiridae	+		+				+
Crustacea	Decapoda	Parastacidae	+
Insecta	Coleoptera	Microsporidae			+
Insecta	Coleoptera	Hydrophilidae		+			+
Insecta	Coleoptera	Scirtidae	O	O	O	O	O	X	O	X
Insecta	Coleoptera	Elmidae	X	X	X	X	X	X	O	X
Insecta	Coleoptera	Psephenidae	O	X	O	X	X	X	X	O
Insecta	Coleoptera	Ptilodactylidae	X	X	+	+	+	X	+	X
Insecta	Coleoptera	Coleoptera				+
Insecta	Diptera	Tipulidae	X	O	X	X	X	X	X	X
Insecta	Diptera	Ceratopogonidae					+
Insecta	Diptera	Simuliidae	O	O	X	X	O	X	X	O
Insecta	Diptera	Athericidae	+			+	+	+	+	+
Insecta	Diptera	Diamesinae		+					+
Insecta	Diptera	Podonominae		+				+
Insecta	Diptera	Tanypodinae	X	X				O		O
Insecta	Diptera	Orthocladiinae	X	X	X	X	O	O	X	O
Insecta	Diptera	Chironominae	X	X	O	X	X	X	O	X
Insecta	Diptera	Diptera		+				+
Insecta	Ephemeroptera	Baetidae	X	X	X	X	X	X	X	X
Insecta	Ephemeroptera	Leptophlebiidae	X	X	X	X	X	X	X	X
Insecta	Ephemeroptera	Caenidae	X	X	+		+	X		X
Insecta	Hemiptera	Veliidae			+
Insecta	Hemiptera	Hemiptera								+
Insecta	Lepidoptera	Lepidoptera							+
Insecta	Megaloptera	Corydalidae			O	O	O		O
Insecta	Neuroptera	Neurorthidae				+	+
Insecta	Odonata	Aeshnidae	O	O	O	O	O	X	O	O
Insecta	Odonata	Corduliidae		+
Insecta	Plecoptera	Eustheniidae	X	X	X	X	X	X	X	X
Insecta	Plecoptera	Austroperlidae			+	+		+	+
Insecta	Plecoptera	Gripopterygidae	X	X	X	X	X	X	X	X
Insecta	Plecoptera	Notonemouridae					+
Insecta	Trichoptera	Hydrobiosidae	X	X	X	X	X	X	X	X
Insecta	Trichoptera	Glossosomatidae	+	+				+		+
Insecta	Trichoptera	Philopotamidae			X	X	O	+	X	+
Insecta	Trichoptera	Hydropsychidae	X	X	X	X	X	X	X	X
Insecta	Trichoptera	Polycentropodidae			+		+	+
Insecta	Trichoptera	Ecnomidae					+		+
Insecta	Trichoptera	Conoesucidae	X	X	X	X	X	X	X	X
Insecta	Trichoptera	Antipodoeciidae					+
Insecta	Trichoptera	Helicopsychidae		+		+	+	+
Insecta	Trichoptera	Calocidae	O	X	X	X	X	X	X	X
Insecta	Trichoptera	Philorheithridae	+	+	+		+		+	+
Insecta	Trichoptera	Odontoceridae		+	+	+	+	+
Insecta	Trichoptera	Calamoceratidae	+	+		+	+	+	+
Insecta	Trichoptera	Leptoceridae	X	X	X	X	X	X	X	X

Water Quality Data

	Spring '94	Autumn '95	Spring '95	Autumn '96	Autumn '97	Spring '97	Autumn '98	Spring '98	Autumn '99	Spring '99
Variable	3-Oct-94	8-Apr-95	4-Oct-95	1-Apr-96	15-Apr-97	16-Oct-97	8-Apr-98	13-Oct-98	12-May-99	14-Dec-99
Water Temperature (°C)	13.3	8.4	10.3	11.1	7.8	7.7	14.8	13.3	9.4	13.9
Conductivity (µS/Cm)	34	20	30	40	42	31	30	36	33	100
Dissolved Oxygen (mg/L)		8.37		8.8	9	10.4	7.8	7.4	10.5	9.7
Alkalinity (mg CaCO₃ /L)	19	30	12	16	20	15	22	17	17	15
pH	7.3	6.83	7.3	8.1	7.64	7.44	7.85	8.12	8.33	8.6
Turbidity (NTU)	2	0	7	7.3	4	16	5	0	3.7	2
Low Total Phosphorus (µg/L)	21	20	27	16	17	20	21	22	23	32
Free Reactive Phosphorus (µg/L)							12	11	14	12
NOx Nitrogen (µg/L)	<10	<10	<10	<10	<10	<10	<10	<10	<10	<10
Total Kjeldahl Nitrogen (mg/L)	<0.3	<0.3	<0.3	<0.3	<0.3	<0.3	<0.3	<0.3	<0.3	<0.3
Ammonia (µg/L)							8	7	12	15
Nitrate (µg/L)							6	5	7	25
Nitrite (µg/L)								<1	<1	<1

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