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

Williams River @ Thalba Bridge HUNT02

Source	Office of Environment and Heritage
Latest Sample Date	01-04-1996
Taxa count ORDER	9
Taxa count FAMILY	17
Taxa count ALT	17
Mayflies present?	27
	ORDER	FAMILY	ALT
SIGNAL	4.1	4.9	3.6
Weighted SIGNAL	6.8		5.2

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	44.06%	35,905,535,299m²
	Natural	1.1.1 Strict nature reserves, 1.1.3 National park, 1.2.0 Managed resource protection, 1.2.2 Surface water supply	27.11%	22,090,348,379m²
	Pastoral Farming	3.2.0 Grazing modified pastures, 3.2.1 Native/exotic pasture mosaic, 3.2.5 Sown grasses, 4.2.0 Grazing irrigated modified pastures	24.21%	19,727,230,880m²
	Forestry	2.2.0 Production native forests, 3.1.0 Plantation forests	3.18%	2,592,878,923m²
	Residential And Infrastructure	5.4.0 Residential and farm infrastructure, 5.4.1 Urban residential, 5.4.5 Farm buildings/infrastructure, 5.5.0 Services, 5.5.2 Public services, 5.5.3 Recreation and culture, 5.6.7 Water extraction and transmission, 5.7.2 Roads, 5.7.3 Railways	0.73%	594,779,574m²
	Water	6.1.0 Lake, 6.2.0 Reservoir/dam, 6.2.1 Reservoir, 6.2.2 Water storage - intensive use/farm dams, 6.3.0 River	0.60%	485,274,129m²
	Industrial	5.3.0 Manufacturing and industrial, 5.3.7 Sawmill, 5.5.1 Commercial services	0.03%	24,001,193m²
	Arable Farming	3.4.0 Perennial horticulture, 3.4.1 Tree fruits, 3.4.2 Olives, 3.4.9 Grapes, 3.5.0 Seasonal horticulture	0.02%	19,750,982m²
	Waste Management	5.9.2 Landfill, 5.9.5 Sewage/sewerage	0.02%	17,500,870m²
	Forestry Plantation	3.1.1 Hardwood plantation forestry, 3.1.2 Softwood plantation forestry	0.02%	12,750,634m²
	Intensive Pastoral Farming	5.2.1 Dairy sheds and yards, 5.2.7 Saleyards/stockyards	0.02%	12,500,622m²
	Mining	5.8.0 Mining	0.00%	1,750,087m²
Show minor land uses 8
				814,843,016m²

Waterbug sample history

Sampled on 1 April 1996

Taxa	Abundance	SIGNALT Grade
Gastropoda KG	1	1
Physidae (Unident.) KG089999	1
Acarina MM	4	6
Mites (Unident.) MM999999	4

Unknown OT	10
Atyidae (Unident.) OT019999	10

Coleoptera QC	46	5
Dytiscidae (Unident.) QC099999	14
Hydrophilidae (Unident.) QC119999	18

Elmidae (Unident.) QC349999	6

Psephenidae (Unident.) QC379999	8

Diptera QD	3	3
Orthocladiinae (Unident.) QDAF9999	1
Chironominae (Unident.) QDAJ9999	2
Ephemeroptera QE	27	9
Baetidae (Unident.) QE029999	1
Leptophlebiidae (Unident.) QE069999	26
Hemiptera QH	1	2
Corixidae (Unident.) QH659999	1
Odonata QO	4	3
Gomphidae (Unident.) QO139999	3
Corduliidae (Unident.) QO169999	1
Trichoptera QT	35	8
Polycentropodidae (Unident.) QT079999	1
Calamoceratidae (Unident.) QT249999	4
Leptoceridae (Unident.) QT259999	30

SIGNALT	4.1
	ORDER
Weighted SIGNALT	5.3

Sampled on 18 October 1995

Taxa	Abundance	SIGNALT Grade
Gastropoda KG	6	1
Hydrobiidae (Unident.) KG029999	6
Bivalvia KP	1	3
Corbiculidae (Unident.) KP029999	1
Oligochaeta LO	2	2
Oligochaeta (Unident.) LO999999	2
Acarina MM	1	6
Mites (Unident.) MM999999	1

Unknown OT	180
Atyidae (Unident.) OT019999	180

Coleoptera QC	38	5
Dytiscidae (Unident.) QC099999	3
Hydrophilidae (Unident.) QC119999	12

Hydraenidae (Unident.) QC139999	3

Elmidae (Unident.) QC349999	13

Psephenidae (Unident.) QC379999	6

Brentidae (Unident.) QCAM9999	1
Diptera QD	20	3
Tanypodinae (Unident.) QDAE9999	4
Chironominae (Unident.) QDAJ9999	1
Diptera (Unident.)(Larva) QDZZ9999	15

Ephemeroptera QE	92	9
Baetidae (Unident.) QE029999	2
Leptophlebiidae (Unident.) QE069999	80
Caenidae (Unident.) QE089999	10
Hemiptera QH	22	2
Veliidae (Unident.) QH569999	7
Gerridae (Unident.) QH579999	1
Corixidae (Unident.) QH659999	5
Notonectidae (Unident.) QH679999	8
Pleidae (Unident.) QH689999	1
Megaloptera QM	1	8
Sialidae (Unident.) QM029999	1
Odonata QO	11	3
Protoneuridae (Unident.) QO049999	4
Aeshnidae (Unident.) QO129999	3
Libellulidae (Unident.) QO179999	4
Trichoptera QT	40	8
Calamoceratidae (Unident.) QT249999	18
Leptoceridae (Unident.) QT259999	22

SIGNALT	4.2
	ORDER
Weighted SIGNALT	4.2

Sampled on 2 May 1995

Taxa	Abundance	SIGNALT Grade
Turbellaria IF	4	2
Dugesiidae (Unident.) IF619999	4
Gastropoda KG	1	1
Physidae (Unident.) KG089999	1
Bivalvia KP	2	3
Corbiculidae (Unident.) KP029999	2
Oligochaeta LO	11	2
Oligochaeta (Unident.) LO999999	11
Acarina MM	4	6
Mites (Unident.) MM999999	4

Unknown OT	14
Atyidae (Unident.) OT019999	14

Coleoptera QC	49	5
Hydrophilidae (Unident.) QC119999	21

Hydraenidae (Unident.) QC139999	10

Elmidae (Unident.) QC349999	18

Diptera QD	6	3
Simuliidae (Unident.) QD109999	2

Tanypodinae (Unident.) QDAE9999	1
Orthocladiinae (Unident.) QDAF9999	2
Chironomidae (Unident.)(Larva) QDAZ9999	1
Ephemeroptera QE	43	9
Baetidae (Unident.) QE029999	7
Leptophlebiidae (Unident.) QE069999	33
Caenidae (Unident.) QE089999	3
Megaloptera QM	8	8
Corydalidae (Unident.) QM019999	7

Sialidae (Unident.) QM029999	1
Odonata QO	5	3
Isostictidae (Unident.) QO039999	1
Gomphidae (Unident.) QO139999	4
Plecoptera QP	5	10
Gripopterygidae (Unident.) QP039999	5
Trichoptera QT	78	8
Hydropsychidae (Unident.) QT069999	36
Helicopsychidae (Unident.) QT179999	1
Atriplectididae (Unident.) QT239999	1
Calamoceratidae (Unident.) QT249999	18
Leptoceridae (Unident.) QT259999	22

SIGNALT	4.6
	ORDER
Weighted SIGNALT	5.1

Sampled on 11 October 1994

Taxa	Abundance	SIGNALT Grade
Gastropoda KG	4	1
Hydrobiidae (Unident.) KG029999	3
Physidae (Unident.) KG089999	1
Bivalvia KP	1	3
Corbiculidae (Unident.) KP029999	1
Acarina MM	5	6
Mites (Unident.) MM999999	5

Unknown OT	8
Atyidae (Unident.) OT019999	8

Coleoptera QC	27	5
Hydrophilidae (Unident.) QC119999	3

Elmidae (Unident.) QC349999	24

Diptera QD	9	3
Culicidae (Unident.) QD079999	2

Orthocladiinae (Unident.) QDAF9999	4
Chironominae (Unident.) QDAJ9999	2
Chironomidae (Unident.)(Larva) QDAZ9999	1
Ephemeroptera QE	17	9
Baetidae (Unident.) QE029999	1
Leptophlebiidae (Unident.) QE069999	13
Caenidae (Unident.) QE089999	3
Hemiptera QH	5	2
Hydrometridae (Unident.) QH549999	1
Veliidae (Unident.) QH569999	1
Pleidae (Unident.) QH689999	3
Megaloptera QM	3	8
Sialidae (Unident.) QM029999	3
Odonata QO	11	3
Isostictidae (Unident.) QO039999	2
Protoneuridae (Unident.) QO049999	5
Gomphidae (Unident.) QO139999	4
Trichoptera QT	35	8
Polycentropodidae (Unident.) QT079999	1
Ecnomidae (Unident.) QT089999	1
Helicopsychidae (Unident.) QT179999	1
Calamoceratidae (Unident.) QT249999	4
Leptoceridae (Unident.) QT259999	28

SIGNALT	4.4
	ORDER
Weighted SIGNALT	4.8