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

Mann14 - Manning River at Gumni Trail

Site Condition Summary
Sampling Data and Assessments
Site report cards

Site Condition Summary

This site on the Manning River was within the Barrington Tops State Forest. The site was surrounded by undisturbed native vegetation that continued to the stream edge.

The water quality at the site was good. Nitrogen and phosphorus concentrations were below or close to detection limits and all other variables were as expected for this type of stream.

AusRivAS assessments of edge habitat were consistently good, with O/E-Taxa values of 0.95 for both sampling occasions. Riffle habitat assessments gave O/E-Taxa values of 0.91 and 0.86. On the whole, a rich fauna was collected from both habitats in which all major macroinvertebrate groups were represented.

Location Map

Location Details
Map Name	Pigna Barney 9234-3-N
Map Zone	56
Map Scale	1:25000
Easting	364800
Northing	6475000
Distance from source (m)	19888
Elevation (m asl)	1010
Average Annual Rainfall (mm)	850

Single Season Assessments

Edge
	Spring '95	Autumn '96
	5-Oct-95	1-Apr-96
O/E Taxa	0.95	0.95
Band	A	A
O/E SIGNAL	1.00	1.07

Riffle
	Spring '94	Autumn '96
	3-Oct-94	1-Apr-96
O/E Taxa	0.91	0.86
Band	A	B
O/E SIGNAL	1.07	0.97

Combined Season Assessments

Edge
Seasons	SPR95AUT96
Model	Eastern
O/E Taxa	1.04
Band	A
O/E SIGNAL	1.01

Riffle

Taxa Collected

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

Edge
			Spring '95	Autumn '96
Phylum	Class/Order	Family	5-Oct-95	1-Apr-96
Arachnida	Hydracarina		X	O
Copepoda	Copepoda			+
Insecta	Coleoptera	Coccinellidae		+
Insecta	Coleoptera	Dytiscidae	X	O
Insecta	Coleoptera	Elmidae	O	X
Insecta	Coleoptera	Gyrinidae		O
Insecta	Coleoptera	Hydrophilidae	O	O
Insecta	Coleoptera	Scirtidae	+	X
Insecta	Diptera	Ceratopogonidae	O
Insecta	Diptera	Chironomidae		+
Insecta	Diptera	Chironominae	O	X
Insecta	Diptera	Dixidae	O	O
Insecta	Diptera	Orthocladiinae	X	X
Insecta	Diptera	Simuliidae		+
Insecta	Diptera	Tanypodinae	X	X
Insecta	Ephemeroptera	Ameletopsidae	+	+
Insecta	Ephemeroptera	Baetidae	X	X
Insecta	Ephemeroptera	Caenidae	X	O
Insecta	Ephemeroptera	Leptophlebiidae	X	X
Insecta	Ephemeroptera	Oniscigastridae	+
Insecta	Hemiptera	Corixidae	X	X
Insecta	Hemiptera	Gerridae		X
Insecta	Hemiptera	Notonectidae		O
Insecta	Hemiptera	Veliidae	X	X
Insecta	Odonata	Synlestidae	X	+
Insecta	Plecoptera	Gripopterygidae	X	X
Insecta	Plecoptera	Notonemouridae		+
Insecta	Trichoptera	Calamoceratidae	+	X
Insecta	Trichoptera	Ecnomidae		+
Insecta	Trichoptera	Hydrobiosidae	+
Insecta	Trichoptera	Leptoceridae	X	X
Insecta	Trichoptera	Philorheithridae		+

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

Riffle
			Spring '94	Autumn '96
Phylum	Class/Order	Family	3-Oct-94	1-Apr-96
Platyhelminthes	Turbellaria			+
Annelida	Oligochaeta	Oligochaeta	O	O
Arachnida	Hydracarina	Hydracarina	O	O
Crustacea	Amphipoda	Perthiidae		+
Crustacea	Decapoda	Parastacidae		+
Insecta	Coleoptera	Hydrophilidae
Insecta	Coleoptera	Scirtidae	X	+
Insecta	Coleoptera	Elmidae	X	X
Insecta	Coleoptera	Psephenidae	X	X
Insecta	Coleoptera	Ptilodactylidae	O
Insecta	Diptera	Tipulidae	X	X
Insecta	Diptera	Simuliidae	X	X
Insecta	Diptera	Diamesinae
Insecta	Diptera	Podonominae
Insecta	Diptera	Tanypodinae	X	+
Insecta	Diptera	Orthocladiinae	X	X
Insecta	Diptera	Chironominae	O	X
Insecta	Ephemeroptera	Baetidae	X	X
Insecta	Ephemeroptera	Ameletopsidae		+
Insecta	Ephemeroptera	Leptophlebiidae	X	X
Insecta	Ephemeroptera	Caenidae	O
Insecta	Hemiptera	Gerridae		+
Insecta	Hemiptera	Corixidae		+
Insecta	Lepidoptera	Pyralidae		+
Insecta	Megaloptera	Corydalidae	+	O
Insecta	Odonata	Aeshnidae	O	X
Insecta	Plecoptera	Eustheniidae	X	O
Insecta	Plecoptera	Gripopterygidae	X	X
Insecta	Trichoptera	Hydrobiosidae	X	O
Insecta	Trichoptera	Glossosomatidae		+
Insecta	Trichoptera	Philopotamidae		O
Insecta	Trichoptera	Hydropsychidae	X	X
Insecta	Trichoptera	Polycentropodidae	+	+
Insecta	Trichoptera	Conoesucidae	O	X
Insecta	Trichoptera	Helicopsychidae	+
Insecta	Trichoptera	Calocidae	X	X
Insecta	Trichoptera	Calamoceratidae	+	+
Insecta	Trichoptera	Leptoceridae	X	O

Water Quality Data

	Spring '94	Autumn '95	Spring '95	Autumn '96
Variable	3-Oct-94	9-Apr-95	5-Oct-95	1-Apr-96
Water Temperature (°C)	13.4	11.3	10.9	14.2
Conductivity (µS/Cm)	42	20	10	9
Dissolved Oxygen (mg/L)	10.22	8.03	18.1	8.5
Alkalinity (mg CaCO₃ /L)	21	30	14	21
pH	7.71	6.79	7.6	8.2
Turbidity (NTU)	2	0	5	6.4
Low Total Phosphorus (µg/L)	16		15	<12
Free Reactive Phosphorus (µg/L)
NOx Nitrogen (µg/L)	<10		<10	<10
Total Kjeldahl Nitrogen (mg/L)	<0.3		<0.3	<0.3
Ammonia (µg/L)
Nitrate (µg/L)
Nitrite (µg/L)

Key

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