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NOTICE: SIGNALT Calculations are currently running through final testing and may be inaccurate until completed.

Katherine River, d/s sewage operation EE280798DA06

Source	Department of Environment and Natural Resources (Daly River)
Latest Sample Date	01-01-1998
Taxa count ORDER	11
Taxa count FAMILY	36
Taxa count ALT	65
Mayflies present?	59
	ORDER	FAMILY	ALT
SIGNAL	3.7	4.2	2.6
Weighted SIGNAL	4.8	4.7	4.2

Waterbug Land Use

	Category	ALUM Categories	Percent of upstream catchment	Area
	Minimal Use	1.3.0 Other minimal use, 1.3.3 Residual native cover, 2.1.0 Grazing native vegetation	94.74%	5,909,326,103m²
	Residential And Infrastructure	5.7.2 Roads, 5.7.3 Railways	2.30%	143,513,991m²
	Pastoral Farming	3.2.5 Sown grasses, 4.2.3 Irrigated legume/grass mixtures	1.77%	110,510,774m²
	Waste Management	5.9.1 Effluent pond	0.39%	24,252,364m²
	Mining	5.8.2 Quarries	0.37%	23,252,267m²
	Unknown	5.2.8 Abandoned intensive animal production, 5.8.4 Extractive industry not in use	0.24%	14,751,438m²
	Water	6.3.1 River - conservation, 6.4.3 Stormwater	0.12%	7,250,707m²
	Intensive Pastoral Farming	5.2.7 Saleyards/stockyards	0.07%	4,500,439m²
Show minor land uses 7
				62,373,581m²

Waterbug sample history

Sampled on 1 January 1998

Taxa	Abundance	SIGNALT Grade
Bivalvia KP	1	3
Corbiculina sp.(Unident.) KP020199	1
Oligochaeta LO	4	2
Oligochaeta (Unident.) LO999999	4
Acarina MM	11	6
Hydrodroma sp.(Unident.) MM070199	1

Frontipoda sp.(Unident.) MM090299	1

Monatractides sp.(Unident.) MM100199	2

Limnesia sp.(Unident.) MM120199	3

Unionicola sp.(Unident.) MM160699	1

Albia sp.(Unident.) MM190199	1

Barwontius sp.(Unident.) MM190599	1

Oribatida (Unident.) MM9999A1	1

Unknown OJ	6
Cyclopoida (Unident.) OJ399999	6
Unknown OT	17
Caridina gracilirostris OT010302	12

Caridina serratirostris OT010305	4

Macrobrachium sp.(Unident.) OT020199	1

Coleoptera QC	19	5
Neohydrocoptus subfasciatus QC080301	4

Laccophilus clarki QC090105	2

Copelatus nigrolineatus QC092704	1

Helochares mareensis QC1112Q2	3

Ochthebius sp.(Unident.) QC130399	1

Austrolimnius sp.(Unident.)(Larva) QC34019I	2

Austrolimnius sp. 4 (larva) QC3401L4	3

Austrolimnius sp. 9 (larva) QC3401L9	1

Graphelmis sp. L74E (larva) QC3411G1	2

Diptera QD	90	3
Culicidae (Unident.) QD079999	4

Ceratopogoninae (Unident.) QD0999I1	10

Tabanidae (Unident.) QD239999	1
Stratiomyidae (Unident.) QD249999	1
Djalmabatista sp.(Unident.) QDAE0699	2
Procladius sp.(Unident.) QDAE0899	1
Paramerina sp.(Unident.) QDAE1299	3
Larsia sp.(Unident.) QDAE1799	9
Nanocladius sp.(Unident.) QDAF0499	1
Stempellinella sp.(Unident.) QDAH0199	1
Tanytarsus sp. 10 QDAH04B0	1
Tanytarsus sp. 18 QDAH04B8	1
Tanytarsus sp. 1 QDAH04T1	6
Tanytarsus sp. 3 QDAH04T3	1
Tanytarsus sp. 4 QDAH04T4	4
Tanytarsus sp. 8 QDAH04T8	8
Tanytarsus sp. 9 QDAH04T9	1
Paratanytarsus sp.(Unident.) QDAH0699	1
Rheotanytarsus sp.(Unident.) QDAH0799	3
Stenochironomus sp.(Unident.) QDAI0299	1
Dicrotendipes sp.(Unident.) QDAI0699	15
Polypedilum D1 QDAI08D1	4
Polypedilum D3 QDAI08D3	1
Paratendipes sp.(Unident.) QDAI1099	1
Parachironomus D1 QDAI25D1	3
Chironomidae (Unident.) (Pupa) QDAZ999I	6
Ephemeroptera QE	59	9
Cloeon sp.(Unident.) QE020299	6
Pseudocloeon sp.(Unident.) QE020599	2
Tasmanocoenis sp.(Unident.) QE080199	21
Wundacaenis dostini QE080202	30
Hemiptera QH	24	2
Diplonychus sp.(Unident.) QH620299	1
Corixidae (Unident.) QH659999	11
Pleidae (Unident.) QH689999	12
Odonata QO	9	3
Antipodogomphus sp.(Unident.) QO130199	1
Austrogomphus sp.(Unident.) QO130499	1
Zygoptera (Unident.) QO999997	3
Epiproctophora (Unident.) QO999998	4
Trichoptera QT	26	8
Hellyethira sp.(Unident.) QT030499	6
Ecnomus sp.(Unident.) QT080499	1
Oecetis sp.(Unident.) QT250799	9
Triaenodes sp.(Unident.) QT251099	9
Triplectides sp.(Unident.) QT251199	1

SIGNALT	3.7
	ORDER
Weighted SIGNALT	4.1