The creek is concrete-walled to the east from Brisbane Road to the convergence with Orphan School Creek at northeast, though a naturalised section of the creek called "Restoring the Waters" begins just west of Brisbane Road at Edensor Park, and southwest of that point the creek remains natural with a reedy riparian zone.[2] For public access, the transitway bus network crosses several sections near the creek.[3]
History
A recreational walkway meanders the creek
Stone artifacts belonging to the Darug people, who are indigenous to southwest Sydney, have been found on the creek's banks are thousands of years old. Today, the vegetal banks of the creek are an important place for storytelling and community arts.[4] The creek was a source of freshwater, fish, eels and shellfish for the local Aboriginal Australians. Wild fennel and chicory growing through the creek's banks are remnants of the early European farmers in the St Johns Park area.[5] Its name suggests that the creek meandered through a cleared paddock of an early farm in the area.[6]
In 1995, it was announced that the concrete-lined creek will be turned into the natural creek it once was, though only a small portion of it was reestablished as such – In 1996, the project rejuvenated the 500 metres (1,600ft) long section of the concrete storm water drain to a natural living stream featuring a riparian buffer.[7] This site, which is just west of Brisbane Road Bridge in Bonnyrigg, became known as "Restoring the Waters" in 2001, and earned the council an international environmental award.[1][5]
Geography
Clear Paddock Basin in Bonnyrigg, one of the creek's sources
Clear Paddock Creek is encompassed by a grassy terrain and eucalypts and has a catchment area of 8.8 square kilometres (3.4sqmi).[8] At the upstream end of the creek (in Edensor Park) three smaller natural waterways called Edensor, Wilson and Henty Creeks (which are still labeled as 'Clear Paddock Creek' on maps) flow into the main channel of the creek at a naturalised part named "Restoring the Waters". Flood surges above the downstream basin fence of Kalang Road Basin, where it flows down Smithfield Road. Road crossings at Smithfield Road, Brown Road and Simpson Road can be overflowed in a 20 year ARI (Average Recurrence Interval). Parts of the Bus Transitway at the Edensor Road junction can be flood affected.[3]
Henty Place Reserve, Diamond Crescent Reserve, Brown Reserve, Gregorace Reserve, Bonnyrigg Town Centre Park, Nineveh Stadium (part of Eden Venues reception club), King Park, Burns Park, St Johns Park (with the adjacent bowling club) and Hampshire Reserve are contiguous recreational areas that are present on the creek's strip, all featuring a shared cycleway/walkway. They also adjoin the nature strip of Orphan School Creek to the north and east.[3]
Course
The creek is a linear wetland that flows north from North Liverpool Road at the border of Bonnyrigg and Green Valley, parallel of the Liverpool-Parramatta Rapid Bus Transitway, which then heads to Clear Paddock Basin in the Bonnyrigg/Edensor Park boundary, just near Smithfield Road. Before reaching the Basin it is intermittent, only filling up after substantial rainfall. The creek then turns its course north-east from Edensor Road, becoming concrete-walled, before emptying into Orphan School Creek in Wakeley. To the south of Clear Paddock Basin, the creek becomes subterranean or tunnelled, where it flows underground in a southwesterly direction to the northeastern fringes of Green Valley. It is approximately 6.5 kilometres (4.0mi) in length,[8] although Fairfield City Council lists it as 5 kilometres (3.1mi) long.[3]
Restoration
"Restoring the Waters" section with restored vegetation
The restored natural creek ecosystem ("Restoring the Waters" area), which lies west of Brisbane Road, features typical riparian vegetation and resembles the original Coastal Swamp Oak Forest that predominantly has species like Casuarina glauca.[9] The creek's original water flows were advantageously sidetracked from an engineered structure to a natural system. Therefore, in the process a creek and urban floodplain developed the cornerstone of a restored local park that implements a complete catchment management standards.[8]
A major detention basin was constructed in 2004 in the Bonnyrigg area. The creek has been served as a living laboratory that examines new landscape and bioengineering technologies as tenable alternatives to the establishment of concrete channels and conventional drainage infrastructure. A mixture of Gross Pollutant Traps (GPTs) were established on all stormwater pipes that join the rejuvenated section of the creek, which include a floating litter boom with a loaded skirt, stormwater traps, and litter baskets. Around 26,660 aquatic plants were planted at the bottom of the banks, thereby supplying bank stabilisation and thus decreasing potential erosion and subsequent sedimentation of the new watercourse.[8][3]
The riparian zone at Brown Reserve (on Brown Road, Bonnyrigg) is densely vegetated with old arborescent weeds and vines, though it also features remnant vegetation of River-flat eucalypt forest, with the rare species such as Acacia pubescens. To prevent erosion in the riparian areas, by the help of Fairfield City Council, over 19,000 native plants will be planted from 2025 to support native plant regeneration, whilst removing invasive weeds.[10]
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