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

Nepean R @ Ellis Lane 22052

Source	Office of Environment and Heritage
Latest Sample Date	30-03-2007
Taxa count ORDER	12
Taxa count FAMILY	20
Taxa count ALT	20
Mayflies present?	21
	ORDER	FAMILY	ALT
SIGNAL	3.2	3.5	2.5
Weighted SIGNAL	3.5		3.6

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	55.48%	81,133,480,864m²
	Residential And Infrastructure	5.4.0 Residential and farm infrastructure, 5.4.1 Urban residential, 5.4.2 Rural residential with agriculture, 5.4.3 Rural residential without agriculture, 5.4.5 Farm buildings/infrastructure, 5.5.0 Services, 5.5.2 Public services, 5.5.3 Recreation and culture, 5.5.5 Research facilities, 5.6.0 Utilities, 5.6.1 Fuel powered electricity generation, 5.6.5 Electricity substations and transmission, 5.6.6 Gas treatment, storage and transmission, 5.6.7 Water extraction and transmission, 5.7.0 Transport and communication, 5.7.1 Airports/aerodromes, 5.7.2 Roads, 5.7.3 Railways, 5.7.5 Navigation and communication	11.49%	16,803,788,924m²
	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	8.35%	12,212,096,601m²
	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, 6.4.0 Channel/aqueduct, 6.4.1 Supply channel/aqueduct, 6.4.3 Stormwater, 6.5.0 Marsh/wetland	3.34%	4,889,438,583m²
	Natural	1.1.1 Strict nature reserves, 1.1.3 National park, 1.1.7 Other conserved area, 1.2.0 Managed resource protection, 1.2.2 Surface water supply	2.98%	4,358,445,253m²
	Arable Farming	3.3.0 Cropping, 3.4.0 Perennial horticulture, 3.4.1 Tree fruits, 3.4.2 Olives, 3.4.6 Perennial flowers and bulbs, 3.4.9 Grapes, 3.5.0 Seasonal horticulture, 3.5.2 Seasonal flowers and bulbs, 3.5.3 Seasonal vegetables and herbs, 4.3.0 Irrigated cropping, 4.4.0 Irrigated perennial horticulture, 4.4.1 Irrigated tree fruits, 4.4.2 Irrigated olives, 4.4.4 Irrigated vine fruits, 4.4.9 Irrigated grapes, 4.5.3 Irrigated seasonal vegetables and herbs, 4.5.4 Irrigated turf farming	1.07%	1,562,980,367m²
	Intensive Pastoral Farming	5.2.0 Intensive animal production, 5.2.1 Dairy sheds and yards, 5.2.3 Poultry farms, 5.2.5 Aquaculture, 5.2.6 Horse studs	0.48%	698,741,223m²
	Mining	5.8.0 Mining, 5.8.1 Mines, 5.8.2 Quarries	0.28%	405,494,906m²
	Industrial	5.3.0 Manufacturing and industrial, 5.3.1 General purpose factory, 5.3.2 Food processing factory, 5.3.5 Abattoirs, 5.5.1 Commercial services	0.23%	338,245,751m²
	Intensive Arable Farming	5.1.0 Intensive horticulture, 5.1.1 Production nurseries, 5.1.2 Shadehouses	0.07%	106,248,665m²
	Waste Management	5.9.0 Waste treatment and disposal, 5.9.2 Landfill, 5.9.5 Sewage/sewerage	0.06%	91,248,854m²
	Unknown	3.6.0 Land in transition, 3.6.4 No defined use, 3.6.5 Abandoned perennial horticulture, 5.2.8 Abandoned intensive animal production, 5.8.4 Extractive industry not in use	0.03%	37,999,523m²
	Forestry	3.1.0 Plantation forests	0.00%	5,999,925m²
Show minor land uses 9
				1,462,319,131m²

Waterbug sample history

Sampled on 30 March 2007

Taxa	Abundance	SIGNALT Grade
Turbellaria IF	10	2
Dugesiidae (Unident.) IF619999	10
Gastropoda KG	13	1
Ancylidae (Unident.) KG069999	5
Physidae (Unident.) KG089999	8
Acarina MM	43	6
Mites (Unident.) MM999999	43

Unknown OG	5
Cladocera (Unident.) OG999999	5
Unknown OH	11
Ostracoda (Unident.) OH999999	11
Unknown OT	32
Atyidae (Unident.) OT019999	32

Coleoptera QC	8	5
Dytiscidae (Unident.) QC099999	1
Hydrophilidae (Unident.) QC119999	6

Elmidae (Unident.) QC349999	1

Diptera QD	15	3
Ceratopogonidae (Unident.) QD099999	8

Orthocladiinae (Unident.) QDAF9999	2
Chironominae (Unident.) QDAJ9999	5
Ephemeroptera QE	21	9
Baetidae (Unident.) QE029999	18
Caenidae (Unident.) QE089999	3
Hemiptera QH	16	2
Mesoveliidae (Unident.) QH529999	1
Corixidae (Unident.) QH659999	15
Odonata QO	49	3
Coenagrionidae (Unident.) QO029999	48
Libellulidae (Unident.) QO179999	1
Trichoptera QT	23	8
Leptoceridae (Unident.) QT259999	23

SIGNALT	3.2
	ORDER
Weighted SIGNALT	3.6