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

Williams River d/s Clarence Town HUNT504

Source	Office of Environment and Heritage
Latest Sample Date	18-04-1997
Taxa count ORDER	9
Taxa count FAMILY	14
Taxa count ALT	14
Mayflies present?	0
	ORDER	FAMILY	ALT
SIGNAL	2.7	2.9	2.6
Weighted SIGNAL	4.6		3.1

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	48.27%	55,896,519,857m²
	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	25.33%	29,331,272,791m²
	Natural	1.1.1 Strict nature reserves, 1.1.3 National park, 1.2.0 Managed resource protection, 1.2.2 Surface water supply	20.37%	23,592,469,418m²
	Forestry	2.2.0 Production native forests, 3.1.0 Plantation forests	2.57%	2,974,527,664m²
	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, 5.6.0 Utilities, 5.6.7 Water extraction and transmission, 5.7.2 Roads, 5.7.3 Railways	1.79%	2,078,019,326m²
	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, 6.4.1 Supply channel/aqueduct, 6.4.2 Drainage channel/aqueduct, 6.5.0 Marsh/wetland	0.88%	1,016,509,454m²
	Forestry Plantation	3.1.1 Hardwood plantation forestry, 3.1.2 Softwood plantation forestry, 3.1.3 Other forest plantation	0.07%	77,750,723m²
	Intensive Pastoral Farming	5.2.1 Dairy sheds and yards, 5.2.3 Poultry farms, 5.2.6 Horse studs, 5.2.7 Saleyards/stockyards	0.04%	48,000,446m²
	Industrial	5.3.0 Manufacturing and industrial, 5.3.7 Sawmill, 5.5.1 Commercial services	0.02%	24,000,223m²
	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%	22,750,212m²
	Waste Management	5.9.2 Landfill, 5.9.5 Sewage/sewerage	0.02%	17,500,163m²
	Mining	5.8.0 Mining, 5.8.2 Quarries	0.01%	6,750,063m²
Show minor land uses 9
				1,158,058,270m²

Waterbug sample history

Sampled on 18 April 1997

Taxa	Abundance	SIGNALT Grade
Gastropoda KG	8	1
Planorbidae (Unident.) KG079999	5
Physidae (Unident.) KG089999	3
Bivalvia KP	1	3
Corbiculidae (Unident.) KP029999	1
Unknown OG	2
Cladocera (Unident.) OG999999	2
Isopoda OR	27	2
Sphaeromatidae (Unident.) OR139999	27
Unknown OT	10
Atyidae (Unident.) OT019999	10

Coleoptera QC	9	5
Hydrophilidae (Unident.) QC119999	9

Hemiptera QH	7	2
Hydrometridae (Unident.) QH549999	1
Veliidae (Unident.) QH569999	2
Corixidae (Unident.) QH659999	4
Odonata QO	6	3
Coenagrionidae (Unident.) QO029999	4
Isostictidae (Unident.) QO039999	2
Trichoptera QT	34	8
Calamoceratidae (Unident.) QT249999	4
Leptoceridae (Unident.) QT259999	30

SIGNALT	2.7
	ORDER
Weighted SIGNALT	3.2