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

Gwydir R @ Caithness 65171

Source	Office of Environment and Heritage
Latest Sample Date	03-05-2006
Taxa count ORDER	10
Taxa count FAMILY	18
Taxa count ALT	18
Mayflies present?	4
	ORDER	FAMILY	ALT
SIGNAL	3.4	3.4	2.4
Weighted SIGNAL	3.2		3.3

Waterbug Land Use

	Category	ALUM Categories	Percent of upstream catchment	Area
	Minimal Use	1.3.0 Other minimal use, 2.1.0 Grazing native vegetation	55.76%	700,000,936,731m²
	Pastoral Farming	3.2.0 Grazing modified pastures, 3.2.2 Woody fodder plants, 3.2.3 Pasture legumes, 3.2.5 Sown grasses, 4.2.0 Grazing irrigated modified pastures	25.10%	315,092,671,653m²
	Arable Farming	3.3.0 Cropping, 3.4.0 Perennial horticulture, 3.4.1 Tree fruits, 3.4.2 Olives, 3.4.9 Grapes, 3.5.0 Seasonal horticulture, 4.3.0 Irrigated cropping, 4.4.0 Irrigated perennial horticulture, 4.4.1 Irrigated tree fruits, 4.4.2 Irrigated olives, 4.4.3 Irrigated tree nuts, 4.4.9 Irrigated grapes, 4.5.2 Irrigated seasonal flowers and bulbs	13.57%	170,390,478,014m²
	Natural	1.1.1 Strict nature reserves, 1.1.3 National park, 1.1.7 Other conserved area, 1.2.0 Managed resource protection	3.09%	38,835,301,969m²
	Water	6.1.0 Lake, 6.2.0 Reservoir/dam, 6.2.2 Water storage - intensive use/farm dams, 6.3.0 River, 6.4.0 Channel/aqueduct, 6.4.1 Supply channel/aqueduct, 6.5.0 Marsh/wetland	0.92%	11,494,515,382m²
	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, 5.6.5 Electricity substations 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	0.75%	9,448,762,644m²
	Forestry	2.2.0 Production native forests, 3.1.0 Plantation forests	0.72%	9,064,762,130m²
	Mining	5.8.0 Mining, 5.8.1 Mines, 5.8.2 Quarries	0.04%	549,500,735m²
	Intensive Pastoral Farming	5.2.0 Intensive animal production, 5.2.2 Feedlots, 5.2.3 Poultry farms, 5.2.4 Piggeries, 5.2.5 Aquaculture, 5.2.7 Saleyards/stockyards	0.03%	328,000,439m²
	Industrial	5.3.0 Manufacturing and industrial, 5.3.4 Bulk grain storage, 5.5.1 Commercial services	0.01%	118,750,159m²
	Waste Management	5.9.0 Waste treatment and disposal, 5.9.1 Effluent pond, 5.9.5 Sewage/sewerage	0.00%	53,500,072m²
	Unknown	3.6.5 Abandoned perennial horticulture, 5.2.8 Abandoned intensive animal production, 5.8.4 Extractive industry not in use	0.00%	43,000,058m²
	Forestry Plantation	3.1.2 Softwood plantation forestry, 3.1.3 Other forest plantation, 3.1.4 Environmental forest plantation	0.00%	17,750,024m²
	Intensive Arable Farming	5.1.0 Intensive horticulture	0.00%	250,000m²
Show minor land uses 10
				12,554,381,800m²

Waterbug sample history

Sampled on 3 May 2006

Taxa	Abundance	SIGNALT Grade
Bivalvia KP	1	3
Corbiculidae (Unident.) KP029999	1
Oligochaeta LO	2	2
Oligochaeta (Unident.) LO999999	2
Isopoda OR	1	2
Corallanidae OR099999	1
Unknown OT	9
Palaemonidae (Unident.) OT029999	9

Unknown OV	8
Parastacidae (Unident.) OV019999	8

Coleoptera QC	13	5
Dytiscidae (Unident.) QC099999	1
Hydrophilidae (Unident.) QC119999	9

Hydraenidae (Unident.) QC139999	1

Hydrochidae (Unident.) QCAO9999	2

Diptera QD	20	3
Tabanidae (Unident.) QD239999	2
Tanypodinae (Unident.) QDAE9999	8
Chironominae (Unident.) QDAJ9999	10
Ephemeroptera QE	4	9
Caenidae (Unident.) QE089999	4
Hemiptera QH	37	2
Veliidae (Unident.) QH569999	8
Gerridae (Unident.) QH579999	11
Corixidae (Unident.) QH659999	15
Notonectidae (Unident.) QH679999	3
Trichoptera QT	3	8
Leptoceridae (Unident.) QT259999	3

SIGNALT	3.4
	ORDER
Weighted SIGNALT	3.2