4. Sheet erosion developing into gullying, south of Avoca. Paddock in foreground was apparently cultivated with the slope. Stormwater from the cleared hills beyond has flowed across it, stripping off most of the topsoil. Odd furrows have scoured out, forming the beginning of gullies, as on the right of the picture.
8. The southern slope of Tussocky Creek - a small tributary of Wilson's Creek (Omeo). The poor protection afforded by the open stunted forest is inadequate to prevent the washing away of forest litter and surface soil which such a slope is grazed. The soil is stiff clayey loam overlying ordovician sedimentaries.
9. Severe gullying in wheat paddock near Wychitella. Ploughing with the slope has first cause sheet erosion, though slope is not very steep, and later on gullies have developed along furrows, cutting the paddock into awkward shapes, reducing the cultivable area, and sending down large quantities of silt to cover lands below. Land owners say that production from area has fallen off considerably.
10. Gullying at Vaughan, south-west of Castlemaine, possibly started by prospecting along the streams, but now rapidly extending by headward erosion. A good example of secondary effects being more serious than the loss of land : not only is the road threatened, but the debris from this scour is being washed down to the Loddon River, to smother riverflats or choke the Laanecoorie Weir.
26a. Eaglehawk Creek, near Glengarry, Gippsland. It is said that this creek originally spread over a wide swampy, and that a drain a few feet wide and deep was constructed to confine the flow. This has now scoured into a canyon up to 40 feet wide and 30 feet deep. The debris from this has nearly choked bridged on the main Traralgon-Maffra road and railway, and has smothered many acres of land.
33. Landslide, Myers Creek, south of Toolangi. The forest area was cut over about 30 years ago. The slide followed a rainfall of 11.47 inches in four days and appears to have been cause by the trapping of water in loose deposits of shingle beneath a heavy mantle of soil. The extent of landslide is indicated by the size of men shown in circle.
57. The Mitta River, near Tallangatta. When the Hume Reservoir is full, the stored water backs up the river, causing the sandbanks to form. When the level of the water in the reservoir falls, the stream speeds up again and washes the sand further into the reservoir. Note the clean edge of the sandbank where part has been washed away, contrasted with the greyer surface still covered with silt. In this way the Hume storage is steadily being filled.
60. Bullock Creek. A tributary of the Bunyip River. Extensive forest fires, during February, 1932, left mountain slopes open to the torrential rains of November and December, 1931. The rapidity of the unretarded runoff carried vast quantities of surface soil to choke stream beds at lower levels, and eventually drainage channels in the Koo-wee-rup area where serious losses have already occurred through flooding.