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

Yarrow River @ Mt Slow Rd 45092

Source	Office of Environment and Heritage
Latest Sample Date	01-05-2010
Taxa count ORDER	18
Taxa count FAMILY	40
Taxa count ALT	40
Mayflies present?	23
	ORDER	FAMILY	ALT
SIGNAL	3.7	3.7	3.4
Weighted SIGNAL	4.3		4.3

Waterbug Land Use

	Category	ALUM Categories	Percent of upstream catchment	Area
	Minimal Use	1.3.3 Residual native cover, 2.1.0 Grazing native vegetation	76.20%	2,124,985,680m²
	Pastoral Farming	3.2.0 Grazing modified pastures	21.23%	592,065,665m²
	Water	6.3.0 River	1.96%	54,756,073m²
	Residential And Infrastructure	5.7.2 Roads	0.60%	16,751,858m²
Show minor land uses 2
				27,885,593m²

Waterbug sample history

Sampled on 1 May 2010

Taxa	Abundance	SIGNALT Grade
Gastropoda KG	15	1
Planorbidae (Unident.) KG079999	6
Physidae (Unident.) KG089999	9
Bivalvia KP	4	3
Sphaeriidae (Unident.) KP039999	4
Hirudinea LH	6	1
Glossiphoniidae (Unident.) LH019999	6
Oligochaeta LO	4	2
Oligochaeta (Unident.) LO999999	4
Acarina MM	4	6
Mites (Unident.) MM999999	4

Unknown OH	2
Ostracoda (Unident.) OH999999	2
Unknown OJ	2
Copepoda (Unident.) OJ999999	2
Amphipoda OP	3	3
Ceinidae (Unident.) OP029999	3

Isopoda OR	2	2
Phreatoicidae (Unident.) OR059999	2

Unknown OT	4
Atyidae (Unident.) OT019999	4

Coleoptera QC	16	5
Dytiscidae (Unident.) QC099999	9
Hydraenidae (Unident.) QC139999	3

Scirtidae (Unident.) QC209999	3

Hydrochidae (Unident.) QCAO9999	1

Diptera QD	59	3
Tipulidae (Unident.) QD019999	2
Culicidae (Unident.) QD079999	2

Ceratopogonidae (Unident.) QD099999	18

Simuliidae (Unident.) QD109999	3

Stratiomyidae (Unident.) QD249999	1
Tanypodinae (Unident.) QDAE9999	14
Orthocladiinae (Unident.) QDAF9999	4
Chironominae (Unident.) QDAJ9999	15
Ephemeroptera QE	23	9
Leptophlebiidae (Unident.) QE069999	14
Caenidae (Unident.) QE089999	9
Hemiptera QH	17	2
Mesoveliidae (Unident.) QH529999	2
Hydrometridae (Unident.) QH549999	3
Veliidae (Unident.) QH569999	1
Gerridae (Unident.) QH579999	2
Corixidae (Unident.) QH659999	5
Notonectidae (Unident.) QH679999	4
Megaloptera QM	7	8
Sialidae (Unident.) QM029999	7
Odonata QO	15	3
Coenagrionidae (Unident.) QO029999	4
Synlestidae (Unident.) QO089999	8
Aeshnidae (Unident.) QO129999	1
Gomphidae (Unident.) QO139999	2
Plecoptera QP	1	10
Gripopterygidae (Unident.) QP039999	1
Trichoptera QT	13	8
Hydrobiosidae (Unident.) QT019999	1
Odontoceridae (Unident.) QT229999	1
Leptoceridae (Unident.) QT259999	11

SIGNALT	3.7
	ORDER
Weighted SIGNALT	4.1