Site 501 – Dartmouth. This site is on the Mitta Mitta River 4 km downstream of Dartmouth Dam, 50 m upstream of the Horsefall Road Bridge. Adjacent vegetation is predominately open eucalypt forest with the riparian zone dominated by Callistemon spp. (Bottlebrush). This site is subject to alternating inundation and draining due to its location between the dam and Lake Banimboola. The site details are summarised in Figure 2 and Table 1. Table 1. Geographical information of site 501. Altitude (m) 320 Latitude 36.5424° Longitude 147.5008° Catchment area (km2) 3561 Distance from source (km) 135.04 Typical stream (m) 10-70 AusRivAS Bioregion B2 Site 502 – Colemans. This site is on the Mitta Mitta River 9 km downstream of Dartmouth Dam and 3 km downstream of Lake Banimboola. This section passes through a steep sided gorge and has a substrate predominately of boulders and cobble with significant areas of exposed bedrock. The surrounding vegetation is open eucalypt forest with the understorey dominated by Leptospermum spp. (Tea Tree), Callistemon spp. (Bottlebrush) and Acacia spp. (Wattle). Past infestations of Cytisus scoparius (English Broom) have been sprayed. Site details are summarised in Figure 3 and Table 2. 2. Geographical information of site 502. Altitude (m) 300 Latitude 36.5153° Longitude 147.4349° Catchment area (km2) 3634 Distance from source (km) 144.48 Typical stream width (m) 15-30 AusRivAS Bioregion B2 Site 503 – Mitta.
This site is on the Mitta Mitta River 16 km downstream of Dartmouth Dam and approximately 3 km downstream of the Snowy Creek – Mitta Mitta River confluence. The site is 25 m downstream of the bridge on Dartmouth Road. The substrate is primarily cobble and pebble, and the site includes a stand of Phragmites australis (Common reed) and a small pebbly island. The surrounding land is used for grazing cattle and made up of various pasture species. Riparian vegetation is a mix of Salix spp. (Willows), Eucalyptus spp. and grasses. Site details are summarised in Figure 4 and Table 3. Table 3. Geographical information of site 503. Altitude (m) 260 Latitude 36.5202° Longitude 147.3703° Catchment area (km2) 3890 Distance from source (km) 159.37 Typical stream width (m) 30-40 AusRivAS Bioregion B2 Site 504 – Tallandoon. This site is on the Mitta Mitta River approximately 60 km from Dartmouth Dam, near the picnic area located 1.5 km upstream of Tallandoon. The substrate is predominately cobble and boulder and the stream, when in high flow, divides to flow around an island that was used for periodic gravel extraction until 1996. The surrounding land is cleared and is used for grazing on the eastern side while the western side beyond the road, is native vegetation. The riparian zone is dominated by Salix spp. (Willows) on the left bank. On the right bank the Salix spp. were removed in 2008 and replaced with natives. Site details are summarised in Figure 5 and Table 4. Table 4. Geographical information of site 504. Altitude (m) 230 Latitude 36.4393° Longitude 147.2033° Catchment area (km2) 4716 Distance from source (km) 184.42 Typical stream width (m) 15-20 AusRivAS Bioregion B2
Site 507 – Watchingorra This site is on Watchingorra Creek (previously known as Callaghans Creek) and is approximately 1 km upstream of the confluence with the Mitta Mitta River, which is approximately 19 km downstream of Dartmouth Dam. The substrate is mostly bedrock with a mixture of cobble and gravel. The site is surrounded by grazing land and pine plantations. Riparian vegetation consists primarily of Salix spp. (Willows), Rubus fruticosus (Blackberries) and various grasses. Site details are summarised in Figure 8 and Table 7. Table 7. Geographical information of site 507. Altitude (m) 280 Latitude 36.5078’ Longitude 147.4175° Catchment area (km2) 102 Distance from source (km) 19.2 Typical stream width (m) 1-3 AusRivAS Bioregion B2 Site 510 – Whiterock At 1745 m above sea level, site 510 is the highest site in the project, situated in an alpine environment. It is 2 km from the source and has a catchment area of 2.3 km2. The site is dominated by alpine heath and sphagnum bog, with riparian vegetation of alpine shrubs. The substrate in the stream is composed of cobbles, pebbles and some exposed bedrock, with few slow-flowing sections and little edge habitat. Site details are summarised in Figure 9 and Table 8. Table 8. Geographical information of site 510. Altitude (mASL) 1745 Latitude 36.8177° Longitude 147.3175° Catchment area (km2) 2.3
Distance from source (km) 2 Typical stream width (m) 1-3 AusRivAS Bioregion B1 Site 511 – Frog Track. Site 511 is on Big River, at approximately 800 m below the tree line and 18 km downstream of site 510. The forest here is dominated by Eucalyptus delegatensis (Alpine Ash), with an understorey of Daviesia latifolia (Hop Scrub) and Grevillia victoriensis (Royal Grevillia). The stream is 12 to 14 m wide and is fast flowing, with a substrate composed of boulders and cobbles. Site details are summarised in Figure 10 and Table 9. 9. Geographical information of site 511. Altitude (m) 910 Latitude 36.7854° Longitude 147.3878° Catchment area (km2) 72 Distance from source (km) 25 Typical stream width (m) 12-14 AusRivAS Bioregion B1 Site 512 – Glen Valley.
Edge SIGNAL 5.7 6.541667 EPT families 7 9 Total families 22 19 OE50 0.86 – 1.15 0.91 Riffle SIGNAL 6.0 7.242424 EPT families 9 10 Total families 21 20 OE50 0.87 – 1.13 0.93 Combined habitats Key families 22 21 Band A A Site 511 – Frog Track Site 511 achieved an AUSRIVAS score of A – reference condition. Of the water quality measurements, only dissolved oxygen failed to meet the SEPP objectives. All macroinvertebrate indices met the SEPP objectives (Table 30). Table 30. SEPP objectives at site 511. Objective Result Water quality Temperature (°C) - 11.625 Electrical conductivity (µS.cm-2) 100 18.5 pH 6.4 – 7.7 7.325 Alkalinity (mg.L-1.CaCO3) - 10.75 Dissolved oxygen (% sat.) 90 – 110 82.55 Dissolved oxygen (mg.L-1) - 8.82 Oxides of nitrogen (mg.L-1) - 14 Total nitrogen (mg.L-1) 350 101 Total phosphorus (mg.L-1) 25 19.5 Edge SIGNAL 5.7 7.291667 EPT families 7 15 Total families 22 30 OE50 0.86 – 1.15 1.01 Riffle
Total nitrogen (mg.L-1) 350 160 Total phosphorus (mg.L-1) 25 18 Edge SIGNAL 5.7 6.93 EPT families 7 8 Total families 22 15 OE50 0.86 – 1.15 0.76 Riffle SIGNAL 6.0 6.73 EPT families 9 9 Total families 21 16 OE50 0.87 – 1.13 0.81 Combined habitats Key families 22 21 Band A B Site 505 – Snowy Creek Site 505 achieved an AUSRIVAS score of A – reference condition. All SEPP objectives were achieved (Table 40 ). Table 40. SEPP objectives at site 505. Objective Result Water quality Temperature (°C) - 7.44 Electrical conductivity (µS.cm-2) 100 35 pH 6.4 – 7.7 7.32 Alkalinity (mg.L-1.CaCO3) - 16 Dissolved oxygen (% sat.) 90 – 110 94 Dissolved oxygen (mg.L-1) - 11.1 Oxides of nitrogen (mg.L-1) - 11
(Ditpera cont.) Eukiefferiella 1 2 1 3 2 1 1 Nanocladius 1 Orthocladiinae "genus Australia" 1 1 1 1 1 Parakiefferiella 1 2 1 1 1 2 1 Parametriocnemus 1 1 1 1 2 1 Pirara australiensis 1 1 1 1 SO4 1 Stictocladius 1 1 1 1 1 1 Thienemanniella 1 2 3 2 1 2 1 2 1 1 1 1 Diamesinae (sub-family) Paraheptagyia tonnoiri 2 1 1 1 3 1 1 1 Ceratopogonidae Ceratopogonidae EPA 17 1 1 Ceratopogonidae EPA 28/50 1 1 1 2 3 3 1 1 1 Ceratopogonidae EPA 3 2 1 1 1 2 1 Ceratopogonidae EPA 40 1 1 Ceratopogonidae EPA 45 2 1 Ceratopogonidae EPA 47 2 Ceratopogonidae EPA 53 1 Ceratopogonidae EPA 6 1 1 Stratiomyidae 3 Tabanidae 1 1 Athericidae 1 2 1 2 2 2 3 2 1 Dolichopodidae 1 1 1 1 Empididae