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Saltwater Bomera sub-catchment is located on the southern boundary of the Namoi Catchment approximately 110km south west of Gunnedah. It covers an area of 543km2 and has elevations ranging from 960m on top of Deans Mountain to 340m ASL near Tambar Springs. Small communities within this sub-catchment include Bomera and Purlewaugh.
The main tributaries are Bomera Creek and Saltwater Creek following the northern section of the subcatchment and meeting with Coxs Creek on the eastern tip of the sub-catchment. As the name suggests Saltwater Creek has a significant salt load with evidence of salt outbreak and shallow groundwater zones along the creek.
Soil types in this sub-catchment vary from heavy alluvial soils along Saltwater Creek to Brown, Grey and Red-Brown Earths. Earthy Sands are also very common in this area.
Saltwater Creek and the lower reaches of Bomera Creek has been extensively cleared, originally for cropping but have since been used more for cattle and sheep grazing.
The upper reaches of Bomera Creek have large expanses of private and State forests. The main species of vegetation within these areas include Ironbark species, Redgums, Pilliga Box, White Box, Brown Bloodwood, Rough-barked Apple and Cypress Pine. Understorey species include Wattles, Banksias, Wilga, Grevilleas, Grass Trees and Cycads.
As the name suggests, this sub-catchment has high salinity potential and salt outbreak as well as a few other issues mainly; woody weed regrowth, soil erosion, and shallow and hard setting soil surfaces.
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