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

Meander River at Cheshunt Bridge MEAN07

Source	Department of Primary Industries, Parks, Water and Environment
Latest Sample Date	16-03-2007
Taxa count ORDER	10
Taxa count FAMILY	29
Taxa count ALT	30
Mayflies present?	171
	ORDER	FAMILY	ALT
SIGNAL	4.9	5.8	4.9
Weighted SIGNAL	6.6	5	6.6

Waterbug Land Use

	Category	ALUM Categories	Percent of upstream catchment	Area
	Natural	1.1.1 Strict nature reserves, 1.1.3 National park, 1.1.4 Natural feature protection, 1.1.5 Habitat/species management area, 1.1.7 Other conserved area, 1.2.0 Managed resource protection	77.68%	15,930,619,214m²
	Pastoral Farming	3.2.0 Grazing modified pastures, 3.2.1 Native/exotic pasture mosaic, 4.2.0 Grazing irrigated modified pastures	4.87%	997,929,165m²
	Forestry	2.2.0 Production native forests, 3.1.0 Plantation forests	4.80%	985,180,070m²
	Minimal Use	1.3.3 Residual native cover, 2.1.0 Grazing native vegetation	3.71%	761,445,951m²
	Residential And Infrastructure	5.4.1 Urban residential, 5.4.3 Rural residential without agriculture, 5.4.4 Remote communities, 5.5.3 Recreation and culture, 5.7.2 Roads	3.65%	748,196,892m²
	Forestry Plantation	3.1.1 Hardwood plantation forestry, 3.1.2 Softwood plantation forestry	3.08%	632,205,125m²
	Water	6.1.0 Lake, 6.1.1 Lake - conservation, 6.3.0 River, 6.3.1 River - conservation	2.13%	437,468,948m²
	Arable Farming	4.3.0 Irrigated cropping, 4.4.0 Irrigated perennial horticulture	0.05%	10,999,219m²
	Unknown	3.6.1 Degraded land	0.01%	2,749,805m²
	Industrial	5.3.7 Sawmill	0.01%	1,499,894m²
Show minor land uses 4
				205,082,943m²

Waterbug sample history

Sampled on 16 March 2007

Taxa	Abundance	SIGNALT Grade
Turbellaria IF	2	2
Turbellaria (Unident.) IF999999	2
Gastropoda KG	1	1
Hydrobiidae (Unident.) KG029999	1
Bivalvia KP	3	3
Sphaeriidae (Unident.) KP039999	3
Oligochaeta LO	5	2
Oligochaeta (Unident.) LO999999	5
Acarina MM	1	6
Mites (Unident.) MM999999	1

Coleoptera QC	44	5
Scirtidae (Unident.) QC209999	3

Elmidae Adults QC34999A	34

Elmidae Larvae QC34999L	3

Psephenidae (Unident.) QC379999	4

Diptera QD	135	3
Tipulidae (Unident.) QD019999	3
Simuliidae (Unident.) QD109999	86

Empididae (Unident.) QD359999	1
Tanypodinae (Unident.) QDAE9999	2
Orthocladiinae (Unident.) QDAF9999	4
Chironominae (Unident.) QDAJ9999	38
Chironomidae (Unident.)(Larva) QDAZ9999	1
Ephemeroptera QE	171	9
Baetidae (Unident.) QE029999	120
Leptophlebiidae (Unident.) QE069999	51
Plecoptera QP	29	10
Eustheniidae (Unident.) QP019999	26
Gripopterygidae (Unident.) QP039999	3
Trichoptera QT	215	8
Hydrobiosidae (Unident.) QT019999	15
Glossosomatidae (Unident.) QT029999	2
Hydropsychidae (Unident.) QT069999	49
Polycentropodidae (Unident.) QT079999	1
Conoesucidae (Unident.) QT159999	2
Helicopsychidae (Unident.) QT179999	39
Calocidae (Unident.) QT189999	21
Philorheithridae (Unident.) QT219999	1
Leptoceridae (Unident.) QT259999	81
Unknown QT999998	4

SIGNALT	4.9
	ORDER
Weighted SIGNALT	6.1

Sampled on 19 October 2006

Taxa	Abundance	SIGNALT Grade
Turbellaria IF	5	2
Turbellaria (Unident.) IF999999	5
Oligochaeta LO	8	2
Oligochaeta (Unident.) LO999999	8
Acarina MM	8	6
Mites (Unident.) MM999999	8

Coleoptera QC	88	5
Elmidae Adults QC34999A	74

Elmidae Larvae QC34999L	6

Psephenidae (Unident.) QC379999	8

Diptera QD	127	3
Tipulidae (Unident.) QD019999	18
Simuliidae (Unident.) QD109999	46

Podonominae (Unident.) QDAD9999	35
Tanypodinae (Unident.) QDAE9999	2
Orthocladiinae (Unident.) QDAF9999	10
Chironominae (Unident.) QDAJ9999	15
Chironomidae (Unident.)(Larva) QDAZ9999	1
Ephemeroptera QE	70	9
Baetidae (Unident.) QE029999	24
Leptophlebiidae (Unident.) QE069999	46
Lepidoptera QL	1	2
Crambidae (Unident.) QL019999	1

Plecoptera QP	63	10
Eustheniidae (Unident.) QP019999	14
Gripopterygidae (Unident.) QP039999	49
Trichoptera QT	195	8
Hydrobiosidae (Unident.) QT019999	46
Glossosomatidae (Unident.) QT029999	56
Hydropsychidae (Unident.) QT069999	4
Conoesucidae (Unident.) QT159999	17
Helicopsychidae (Unident.) QT179999	23
Calocidae (Unident.) QT189999	1
Philorheithridae (Unident.) QT219999	9
Leptoceridae (Unident.) QT259999	37
Unknown QT999998	2

SIGNALT	5.2
	ORDER
Weighted SIGNALT	6.0

Sampled on 4 April 2006

Taxa	Abundance	SIGNALT Grade
Oligochaeta LO	13	2
Oligochaeta (Unident.) LO999999	13
Acarina MM	14	6
Mites (Unident.) MM999999	14

Coleoptera QC	44	5
Scirtidae (Unident.) QC209999	7

Elmidae Adults QC34999A	34

Elmidae Larvae QC34999L	3

Diptera QD	57	3
Tipulidae (Unident.) QD019999	7
Simuliidae (Unident.) QD109999	45

Empididae (Unident.) QD359999	2
Chironominae (Unident.) QDAJ9999	2
Chironomidae (Unident.)(Larva) QDAZ9999	1
Ephemeroptera QE	210	9
Baetidae (Unident.) QE029999	63
Leptophlebiidae (Unident.) QE069999	147
Hemiptera QH	1	2
Corixidae (Unident.) QH659999	1
Plecoptera QP	53	10
Eustheniidae (Unident.) QP019999	51
Gripopterygidae (Unident.) QP039999	2
Trichoptera QT	172	8
Hydrobiosidae (Unident.) QT019999	10
Hydropsychidae (Unident.) QT069999	18
Conoesucidae (Unident.) QT159999	11
Helicopsychidae (Unident.) QT179999	8
Calocidae (Unident.) QT189999	23
Philorheithridae (Unident.) QT219999	11
Leptoceridae (Unident.) QT259999	90
Unknown QT999998	1

SIGNALT	5.6
	ORDER
Weighted SIGNALT	6.1

Sampled on 17 October 2005

Taxa	Abundance	SIGNALT Grade
Oligochaeta LO	7	2
Oligochaeta (Unident.) LO999999	7
Coleoptera QC	78	5
Scirtidae (Unident.) QC209999	6

Elmidae Adults QC34999A	64

Elmidae Larvae QC34999L	4

Psephenidae (Unident.) QC379999	4

Diptera QD	293	3
Tipulidae (Unident.) QD019999	19
Ceratopogonidae (Unident.) QD099999	4

Simuliidae (Unident.) QD109999	148

Empididae (Unident.) QD359999	1
Diamesinae (Unident.) QDAB9999	47
Podonominae (Unident.) QDAD9999	2
Tanypodinae (Unident.) QDAE9999	3
Orthocladiinae (Unident.) QDAF9999	54
Chironominae (Unident.) QDAJ9999	15
Ephemeroptera QE	63	9
Baetidae (Unident.) QE029999	9
Leptophlebiidae (Unident.) QE069999	54
Plecoptera QP	29	10
Eustheniidae (Unident.) QP019999	17
Gripopterygidae (Unident.) QP039999	12
Trichoptera QT	108	8
Hydrobiosidae (Unident.) QT019999	43
Glossosomatidae (Unident.) QT029999	2
Philopotamidae (Unident.) QT049999	4
Hydropsychidae (Unident.) QT069999	5
Conoesucidae (Unident.) QT159999	6
Helicopsychidae (Unident.) QT179999	10
Philorheithridae (Unident.) QT219999	1
Leptoceridae (Unident.) QT259999	30
Unknown QT999998	7

SIGNALT	6.2
	ORDER
Weighted SIGNALT	6.5

Sampled on 14 April 2005

Taxa	Abundance	SIGNALT Grade
Oligochaeta LO	25	2
Oligochaeta (Unident.) LO999999	25
Acarina MM	12	6
Mites (Unident.) MM999999	12

Coleoptera QC	48	5
Dytiscidae Adults QC09999A	1
Hydrophilidae (Unident.) QC119999	3

Scirtidae (Unident.) QC209999	3

Elmidae Adults QC34999A	36

Elmidae Larvae QC34999L	1

Psephenidae (Unident.) QC379999	4

Diptera QD	54	3
Tipulidae (Unident.) QD019999	11
Simuliidae (Unident.) QD109999	3

Athericidae (Unident.) QD229999	4

Podonominae (Unident.) QDAD9999	3
Orthocladiinae (Unident.) QDAF9999	6
Chironominae (Unident.) QDAJ9999	27
Ephemeroptera QE	63	9
Baetidae (Unident.) QE029999	3
Leptophlebiidae (Unident.) QE069999	60
Plecoptera QP	29	10
Eustheniidae (Unident.) QP019999	26
Gripopterygidae (Unident.) QP039999	3
Trichoptera QT	217	8
Hydrobiosidae (Unident.) QT019999	11
Hydropsychidae (Unident.) QT069999	15
Conoesucidae (Unident.) QT159999	8
Helicopsychidae (Unident.) QT179999	38
Calocidae (Unident.) QT189999	27
Philorheithridae (Unident.) QT219999	5
Leptoceridae (Unident.) QT259999	113

SIGNALT	6.1
	ORDER
Weighted SIGNALT	6.1

Sampled on 15 October 2004

Taxa	Abundance	SIGNALT Grade
Turbellaria IF	2	2
Turbellaria (Unident.) IF999999	2
Oligochaeta LO	9	2
Oligochaeta (Unident.) LO999999	9
Acarina MM	14	6
Mites (Unident.) MM999999	14

Amphipoda OP	15	3
Paramelitidae (Unident.) OP069999	15

Coleoptera QC	68	5
Scirtidae (Unident.) QC209999	1

Elmidae Adults QC34999A	58

Elmidae Larvae QC34999L	1

Psephenidae (Unident.) QC379999	8

Diptera QD	346	3
Tipulidae (Unident.) QD019999	14
Blephariceridae (Unident.)(Larva) QD049999	2

Simuliidae (Unident.) QD109999	130

Stratiomyidae (Unident.) QD249999	1
Empididae (Unident.) QD359999	3
Diamesinae (Unident.) QDAB9999	1
Podonominae (Unident.) QDAD9999	115
Tanypodinae (Unident.) QDAE9999	3
Orthocladiinae (Unident.) QDAF9999	23
Chironominae (Unident.) QDAJ9999	47
Chironomidae (Unident.)(Larva) QDAZ9999	7
Ephemeroptera QE	214	9
Baetidae (Unident.) QE029999	57
Leptophlebiidae (Unident.) QE069999	157
Plecoptera QP	118	10
Eustheniidae (Unident.) QP019999	36
Gripopterygidae (Unident.) QP039999	82
Trichoptera QT	232	8
Hydrobiosidae (Unident.) QT019999	71
Glossosomatidae (Unident.) QT029999	17
Hydroptilidae (Unident.) QT039999	1
Philopotamidae (Unident.) QT049999	2
Hydropsychidae (Unident.) QT069999	33
Ecnomidae (Unident.) QT089999	2
Conoesucidae (Unident.) QT159999	28
Helicopsychidae (Unident.) QT179999	7
Calocidae (Unident.) QT189999	1
Helicophidae (Unident.) QT199999	1
Philorheithridae (Unident.) QT219999	4
Leptoceridae (Unident.) QT259999	62
Unknown QT999998	3

SIGNALT	5.3
	ORDER
Weighted SIGNALT	5.9

Sampled on 23 March 2004

Taxa	Abundance	SIGNALT Grade
Oligochaeta LO	8	2
Oligochaeta (Unident.) LO999999	8
Acarina MM	25	6
Mites (Unident.) MM999999	25

Coleoptera QC	65	5
Scirtidae (Unident.) QC209999	3

Elmidae Adults QC34999A	54

Elmidae Larvae QC34999L	4

Psephenidae (Unident.) QC379999	4

Diptera QD	176	3
Tipulidae (Unident.) QD019999	7
Simuliidae (Unident.) QD109999	89

Podonominae (Unident.) QDAD9999	41
Tanypodinae (Unident.) QDAE9999	5
Orthocladiinae (Unident.) QDAF9999	5
Chironominae (Unident.) QDAJ9999	29
Ephemeroptera QE	379	9
Baetidae (Unident.) QE029999	259
Leptophlebiidae (Unident.) QE069999	120
Plecoptera QP	34	10
Eustheniidae (Unident.) QP019999	26
Gripopterygidae (Unident.) QP039999	8
Trichoptera QT	334	8
Hydrobiosidae (Unident.) QT019999	69
Glossosomatidae (Unident.) QT029999	14
Hydropsychidae (Unident.) QT069999	76
Ecnomidae (Unident.) QT089999	1
Conoesucidae (Unident.) QT159999	32
Helicopsychidae (Unident.) QT179999	17
Calocidae (Unident.) QT189999	1
Philorheithridae (Unident.) QT219999	10
Leptoceridae (Unident.) QT259999	107
Unknown QT999998	7

SIGNALT	6.1
	ORDER
Weighted SIGNALT	6.4

Sampled on 21 October 2003

Taxa	Abundance	SIGNALT Grade
Gastropoda KG	1	1
Hydrobiidae (Unident.) KG029999	1
Oligochaeta LO	8	2
Oligochaeta (Unident.) LO999999	8
Acarina MM	5	6
Mites (Unident.) MM999999	5

Coleoptera QC	62	5
Scirtidae (Unident.) QC209999	3

Elmidae Adults QC34999A	52

Elmidae Larvae QC34999L	3

Psephenidae (Unident.) QC379999	4

Diptera QD	287	3
Tipulidae (Unident.) QD019999	28
Ceratopogonidae (Unident.) QD099999	4

Simuliidae (Unident.) QD109999	88

Athericidae (Unident.) QD229999	2

Empididae (Unident.) QD359999	1
Diamesinae (Unident.) QDAB9999	37
Podonominae (Unident.) QDAD9999	41
Tanypodinae (Unident.) QDAE9999	1
Orthocladiinae (Unident.) QDAF9999	65
Chironominae (Unident.) QDAJ9999	8
Chironomidae (Unident.)(Larva) QDAZ9999	12
Ephemeroptera QE	120	9
Baetidae (Unident.) QE029999	18
Leptophlebiidae (Unident.) QE069999	102
Plecoptera QP	152	10
Eustheniidae (Unident.) QP019999	34
Austroperlidae (Unident.) QP029999	2
Gripopterygidae (Unident.) QP039999	116
Trichoptera QT	180	8
Hydrobiosidae (Unident.) QT019999	43
Glossosomatidae (Unident.) QT029999	21
Hydroptilidae (Unident.) QT039999	4
Hydropsychidae (Unident.) QT069999	15
Polycentropodidae (Unident.) QT079999	1
Conoesucidae (Unident.) QT159999	41
Helicopsychidae (Unident.) QT179999	21
Calocidae (Unident.) QT189999	1
Helicophidae (Unident.) QT199999	1
Philorheithridae (Unident.) QT219999	4
Leptoceridae (Unident.) QT259999	28

SIGNALT	5.5
	ORDER
Weighted SIGNALT	6.3

Sampled on 13 May 2003

Taxa	Abundance	SIGNALT Grade
Oligochaeta LO	7	2
Oligochaeta (Unident.) LO999999	7
Acarina MM	7	6
Mites (Unident.) MM999999	7

Coleoptera QC	36	5
Scirtidae (Unident.) QC209999	6

Elmidae Adults QC34999A	22

Elmidae Larvae QC34999L	2

Psephenidae (Unident.) QC379999	6

Diptera QD	397	3
Tipulidae (Unident.) QD019999	14
Blephariceridae (Unident.)(Larva) QD049999	1

Simuliidae (Unident.) QD109999	194

Diamesinae (Unident.) QDAB9999	17
Podonominae (Unident.) QDAD9999	109
Tanypodinae (Unident.) QDAE9999	1
Orthocladiinae (Unident.) QDAF9999	20
Chironominae (Unident.) QDAJ9999	21
Chironomidae (Unident.)(Larva) QDAZ9999	20
Ephemeroptera QE	217	9
Baetidae (Unident.) QE029999	106
Leptophlebiidae (Unident.) QE069999	111
Plecoptera QP	110	10
Eustheniidae (Unident.) QP019999	35
Gripopterygidae (Unident.) QP039999	75
Trichoptera QT	100	8
Hydrobiosidae (Unident.) QT019999	38
Hydropsychidae (Unident.) QT069999	12
Conoesucidae (Unident.) QT159999	14
Helicopsychidae (Unident.) QT179999	11
Leptoceridae (Unident.) QT259999	25

SIGNALT	6.1
	ORDER
Weighted SIGNALT	6.4