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

Karu504 - Mammy Johnson River upstream of Stroud Road

Site Condition Summary
Sampling Data and Assessments
Site report cards

Site Condition Summary

Adjacent to this site, land on the left bank was used for grazing while land on the right bank was forested, except for the roadway. The riparian zone was intact with only minor disturbance due to the encroachment of some exotic plants.

Water quality at the site was good with measured variables mostly within expected ranges.

A single macroinvertebrate sample collected from the edge habitat in Spring 1997 indicated the fauna was richer than expected (O/E-Taxa value 1.04). The riffle habitat assessments indicated varying degrees of impairment, with O/E-Taxa values of 0.75 and 0.83. The combined season assessment gave an even greater O/E-Taxa value of 0.91. The difference between the single and combined season assessments reflects variability in the taxonomic composition of the riffle samples between seasons.

Location Map

Location Details
Map Name	Stroud Road 9233-2-N
Map Zone	56
Map Scale	1:25000
Easting	400400
Northing	6422600
Distance from source (m)	38639
Elevation (m asl)	40
Average Annual Rainfall (mm)	1100

Single Season Assessments

Edge
	Spring '97
	11-Nov-97
O/E Taxa	0.97
Band	A
O/E SIGNAL	1.04

Riffle
	Autumn '97	Spring '97
	18-Apr-97	11-Nov-97
O/E Taxa	0.75	0.83
Band	B	A
O/E SIGNAL	1.03	1.01

Combined Season Assessments

Edge

Riffle
Seasons	AUT97SPR97
O/E Taxa	0.91
Band	A
O/E SIGNAL	1.04

Taxa Collected

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

Edge
			Spring '97
Phylum	Class/Order	Family	11-Nov-97
Arachnida	Hydracarina		X
Crustacea	Decapoda	Atyidae	X
Crustacea	Isopoda	Sphaeromatidae	+
Insecta	Coleoptera	Dytiscidae	X
Insecta	Coleoptera	Elmidae	X
Insecta	Coleoptera	Gyrinidae	+
Insecta	Coleoptera	Hydraenidae	+
Insecta	Coleoptera	Hydrophilidae	O
Insecta	Coleoptera	Psephenidae	+
Insecta	Coleoptera	Scirtidae	+
Insecta	Diptera	Chironominae	X
Insecta	Diptera	Orthocladiinae	O
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	O
Insecta	Lepidoptera	Pyralidae	+
Insecta	Odonata	Aeshnidae	+
Insecta	Odonata	Coenagrionidae	+
Insecta	Odonata	Gomphidae	O
Insecta	Odonata	Libellulidae	O
Insecta	Odonata	Synlestidae	+
Insecta	Trichoptera	Calamoceratidae	X
Insecta	Trichoptera	Hydropsychidae	+
Insecta	Trichoptera	Hydroptilidae	X
Insecta	Trichoptera	Leptoceridae	X
Insecta	Trichoptera	Philorheithridae	+

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

Riffle
			Autumn '97	Spring '97
Phylum	Class/Order	Family	18-Apr-97	11-Nov-97
Platyhelminthes	Turbellaria		X	+
Mollusca	Gastropoda	Lymnaeidae	+
Mollusca	Bivalvia	Corbiculidae	+
Annelida	Oligochaeta	Oligochaeta	O	O
Arachnida	Hydracarina	Hydracarina	X	X
Crustacea	Isopoda	Sphaeromatidae		+
Crustacea	Decapoda	Atyidae	X	X
Insecta	Coleoptera	Dytiscidae	+	+
Insecta	Coleoptera	Scirtidae	+
Insecta	Coleoptera	Elmidae	X	X
Insecta	Coleoptera	Psephenidae	O	O
Insecta	Diptera	Tipulidae	O	O
Insecta	Diptera	Simuliidae	O	O
Insecta	Diptera	Tabanidae	+
Insecta	Diptera	Empididae		+
Insecta	Diptera	Tanypodinae	X	X
Insecta	Diptera	Orthocladiinae	X	X
Insecta	Diptera	Chironominae	O	X
Insecta	Ephemeroptera	Baetidae	X	X
Insecta	Ephemeroptera	Leptophlebiidae	X	X
Insecta	Ephemeroptera	Caenidae	O	O
Insecta	Megaloptera	Corydalidae	X	X
Insecta	Odonata	Amphipterygidae	+
Insecta	Odonata	Aeshnidae		O
Insecta	Odonata	Gomphidae		X
Insecta	Plecoptera	Gripopterygidae	X	X
Insecta	Trichoptera	Hydrobiosidae	O	X
Insecta	Trichoptera	Hydroptilidae		+
Insecta	Trichoptera	Philopotamidae	X	O
Insecta	Trichoptera	Hydropsychidae	X	X
Insecta	Trichoptera	Ecnomidae		+
Insecta	Trichoptera	Conoesucidae	+	O
Insecta	Trichoptera	Calamoceratidae	+	+
Insecta	Trichoptera	Leptoceridae	O	X

Water Quality Data

	Autumn '97	Spring '97
Variable	18-Apr-97	11-Nov-97
Water Temperature (°C)	16.8	21.8
Conductivity (µS/Cm)	300	295
Alkalinity (mg CaCO₃ /L)	9	5
pH	70	64
Dissolved Oxygen (mg/L)	7.2	7.12
Turbidity (NTU)	4	0.1
Low Total Phosphorus (µg/L)	27	62
Free Reactive Phosphorus (µg/L)
NOx Nitrogen (µg/L)	20	20
Total Kjeldahl Nitrogen (mg/L)	0.38	0.56
Ammonia (µg/L)
Nitrate (µg/L)
Nitrite (µg/L)

Key

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