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

Merriwa River, Jacks Crossing, access near cnr of Dutton & Blaxland Sts, Merriwa site_265

Source Waterwatch New South Wales (Pre 2013)
Latest Sample Date 17-03-2009
Taxa count ORDER 6
Taxa count FAMILY 11
Taxa count ALT 11
Mayflies present? 12
ORDER FAMILY ALT
SIGNAL 4.5 4 1
Weighted SIGNAL 3.1 3.4

Waterbug Land Use

Category ALUM Categories Percent of upstream catchment Area
  Minimal Use 1.3.0 Other minimal use, 1.3.2 Stock route, 1.3.3 Residual native cover, 1.3.4 Rehabilitation, 2.1.0 Grazing native vegetation 64.06% 29,843,524,089m2
  Pastoral Farming 3.2.0 Grazing modified pastures 20.57% 9,581,766,934m2
  Arable Farming 3.3.0 Cropping, 3.4.2 Olives, 3.5.3 Seasonal vegetables and herbs, 4.3.0 Irrigated cropping 12.69% 5,913,106,170m2
Show minor land uses 4
465,841,169m2

Waterbug sample history

Taxa Abundance SIGNALT Grade
Unknown OT 26
Caridea (Unident.) OT999999
26
Caridea (Unident.)
Caridea (Unident.)
Coleoptera QC 19 5
Dytiscidae (Unident.) QC099999
11
Gyrinidae (Unident.) QC109999
3
Gyrinidae (Unident.)
Coleoptera (Unident.) QCZZ9999
5
Coleoptera (Unident.)
Coleoptera (Unident.)
Coleoptera (Unident.)
Coleoptera (Unident.)
Coleoptera (Unident.)
Diptera QD 16 3
Chironomidae QDA00000
1
Diptera (Unident.)(Larva) QDZZ9999
15
Diptera (Unident.)(Larva)
Diptera (Unident.)(Larva)
Diptera (Unident.)(Larva)
Diptera (Unident.)(Larva)
Diptera (Unident.)(Larva)
Ephemeroptera QE 12 9
Ephemeroptera (Unident.) QE999999
12
Hemiptera QH 90 2
Gerridae (Unident.) QH579999
1
Corixidae (Unident.) QH659999
11
Notonectidae (Unident.) QH679999
78
Trichoptera QT 1 8
Trichoptera (Unident.) QT999999
1
ORDER
SIGNALT 4.5
Weighted SIGNALT 3.7