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

NICHOLSON RIVER AT ATKINSON ROAD 230900

Source EPA Victoria
Latest Sample Date 15-12-1998
Taxa count ORDER 8
Taxa count FAMILY 18
Taxa count ALT 19
Mayflies present? 24
ORDER FAMILY ALT
SIGNAL 6.4 5.4 4.2
Weighted SIGNAL 5.8 5 6.2

Waterbug Land Use

Category ALUM Categories Percent of upstream catchment Area
  Forestry 2.2.0 Production native forests 98.44% 43,490,324,444m2
Show minor land uses 4
441,791,548m2

Waterbug sample history

Taxa Abundance SIGNALT Grade
Oligochaeta LO 6 2
Oligochaeta (Unident.) LO999999
6
Acarina MM 6 6
Mites (Unident.) MM999999
6
Mites (Unident.)
Coleoptera QC 13 5
Elmidae (Unident.) QC349999
11
Elmidae (Unident.)
Elmidae (Unident.)(Larvae) QC34999I
2
Elmidae (Unident.)(Larvae)
Diptera QD 45 3
Tipulidae (Unident.) QD019999
1
Ceratopogonidae (Unident.) QD099999
2
Ceratopogonidae (Unident.)
Simuliidae (Unident.) QD109999
20
Simuliidae (Unident.)
Empididae (Unident.) QD359999
1
Tanypodinae (Unident.) QDAE9999
1
Orthocladiinae (Unident.) QDAF9999
11
Chironominae (Unident.) QDAJ9999
7
Chironomidae (Unident.) (Pupa) QDAZ999I
2
Ephemeroptera QE 24 9
Baetidae (Unident.) QE029999
11
Coloburiscidae (Unident.) QE059999
3
Leptophlebiidae (Unident.) QE069999
10
Megaloptera QM 3 8
Corydalidae (Unident.) QM019999
3
Corydalidae (Unident.)
Plecoptera QP 10 10
Gripopterygidae (Unident.) QP039999
10
Trichoptera QT 11 8
Hydrobiosidae (Unident.) QT019999
10
Hydropsychidae (Unident.) QT069999
1
ORDER
SIGNALT 6.4
Weighted SIGNALT 6.3