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

Merimbula Ck @ Yellow Pinch Drive 32055

Source	Office of Environment and Heritage
Latest Sample Date	23-11-2007
Taxa count ORDER	16
Taxa count FAMILY	44
Taxa count ALT	44
Mayflies present?	36
	ORDER	FAMILY	ALT
SIGNAL	4.1	4.2	3.7
Weighted SIGNAL	4		4.6

Waterbug Land Use

	Category	ALUM Categories	Percent of upstream catchment	Area
	Natural	1.1.1 Strict nature reserves, 1.1.3 National park	65.71%	1,142,118,499m²
	Minimal Use	2.1.0 Grazing native vegetation	28.09%	488,159,525m²
	Residential And Infrastructure	5.4.0 Residential and farm infrastructure, 5.4.5 Farm buildings/infrastructure	3.36%	58,429,324m²
	Water	6.1.0 Lake	1.78%	30,962,548m²
	Forestry	2.2.0 Production native forests	0.80%	13,983,086m²
	Pastoral Farming	3.2.0 Grazing modified pastures	0.14%	2,496,980m²
	Arable Farming	3.4.0 Perennial horticulture	0.11%	1,997,584m²
Show minor land uses 4
				17,381,475m²

Waterbug sample history

Sampled on 23 November 2007

Taxa	Abundance	SIGNALT Grade
Gastropoda KG	5	1
Ancylidae (Unident.) KG069999	2
Planorbidae (Unident.) KG079999	3
Bivalvia KP	1	3
Sphaeriidae (Unident.) KP039999	1
Oligochaeta LO	7	2
Oligochaeta (Unident.) LO999999	7
Acarina MM	3	6
Mites (Unident.) MM999999	3

Unknown OH	6
Ostracoda (Unident.) OH999999	6
Amphipoda OP	84	3
Ceinidae (Unident.) OP029999	84

Unknown OT	8
Atyidae (Unident.) OT019999	8

Coleoptera QC	53	5
Haliplidae (Unident.) QC069999	1
Dytiscidae (Unident.) QC099999	20
Hydrophilidae (Unident.) QC119999	6

Scirtidae (Unident.) QC209999	8

Elmidae (Unident.) QC349999	6

Psephenidae (Unident.) QC379999	12

Diptera QD	44	3
Tipulidae (Unident.) QD019999	2
Ceratopogonidae (Unident.) QD099999	20

Simuliidae (Unident.) QD109999	4

Tabanidae (Unident.) QD239999	1
Tanypodinae (Unident.) QDAE9999	8
Orthocladiinae (Unident.) QDAF9999	3
Chironominae (Unident.) QDAJ9999	6
Ephemeroptera QE	36	9
Leptophlebiidae (Unident.) QE069999	36
Hemiptera QH	33	2
Veliidae (Unident.) QH569999	3
Gerridae (Unident.) QH579999	5
Belostomatidae (Unident.) QH629999	2
Gelastocoridae (Unident.) QH649999	1
Corixidae (Unident.) QH659999	7
Notonectidae (Unident.) QH679999	14
Pleidae (Unident.) QH689999	1
Lepidoptera QL	4	2
Crambidae (Unident.) QL019999	4

Megaloptera QM	7	8
Corydalidae (Unident.) QM019999	7

Odonata QO	49	3
Coenagrionidae (Unident.) QO029999	31
Aeshnidae (Unident.) QO129999	2
Gomphidae (Unident.) QO139999	3
Corduliidae (Unident.) QO169999	13
Plecoptera QP	3	10
Gripopterygidae (Unident.) QP039999	3
Trichoptera QT	59	8
Hydrobiosidae (Unident.) QT019999	11
Hydroptilidae (Unident.) QT039999	8
Philopotamidae (Unident.) QT049999	5
Hydropsychidae (Unident.) QT069999	2
Polycentropodidae (Unident.) QT079999	3
Odontoceridae (Unident.) QT229999	1
Calamoceratidae (Unident.) QT249999	5
Leptoceridae (Unident.) QT259999	24

SIGNALT	4.1
	ORDER
Weighted SIGNALT	4.2