Table 14.1: Features of the water environment within the study area (1km)

Watercourse	Description
Hollins Brook (Main River)	The source (SD826080) of Hollins Brook is the confluence of Whittle Brook and Castle Brook, approximately 440m east of the M66 southbound carriageway. It continues in a north-westerly direction for approximately 600 m before entering a culvert conveying it beneath the M66. The brook continues in a general westerly direction for approximately 1.5km before joining the River Roch.
Brightly Brook (Main River)	The sources (SD840092) of Brightly Brook is south of Pilsworth Road flowing westwards beneath Moss Hall Road and south of Pilsworth South Landfill before merging with Hollins Brook.
Castle Brook (Main River)	The source (SD828066) of Castle Brook is on the north side of the M62 and east of the M66 near Unsworth Moss and Moss Side. From its source it flows westwards through Pike Fold Golf Course and then northwards to discharge into Whittle Brook. This watercourse receives runoff from the M66 highways network (via Outfall 2 described below).
Tributary 1 of Castle Brook (Egypt Farm Drain) (Ordinary Watercourse - Bury MBC)	This watercourse rises (SD832068) by Egypt Farm, north of the M66 and approximately 500m east of M60 J18. It flows in a northerly direction for approximately 500m before reaching the southern boundary of Pike Fold Golf Course and its confluence with Tributary 2 of Castle Brook.
Tributary 2 of Castle Brook (Golf Course Drain) (Ordinary Watercourse - Bury MBC)	This watercourse rises (SD826064) along the southern boundary of Pike Fold Golf Course. It flows through the golf course and continues northwards for approximately 1.4km before merging with Castle Brook. This tributary receives runoff from the M66, M62 and M60 highways networks (via Outfall 1 described below).
Parr Brook (Main River)	The source (SD815062) of Parr Brook is north of Ribble Drive in Sunny Bank, approximately 1.3km north west of M60 J18. It flows north through Sunny Bank Wood, approximately 800m west of the M66 and Bury Golf Club, approximately 600m west of the M66, before flowing west into Lamb Lodge Reservoir 1.3km west of the M66.
Tributary of Parr Brook (Ordinary Watercourse - Bury MBC)	The tributary rises (SD822058) approximately 550m west of M60 J18 by Hodder Way, Whitefield. From here the watercourse is culverted beneath the residential housing, flowing south towards the M62 by Derwent Avenue before flowing northwards, still culverted, to Cambeck Close where is merges with Parr Brook.
Whittle Brook (Main River)	The source (SD848085) of Whittle Brook is near Heywood to the north west of Junction 19. Whittle Brook passes in culvert under the M62 twice, at its closest to the Proposed Scheme it crosses approximately 1.8km east of M60 J18.Castle Brook joins on the west bank near Thurston Fold and then it is joined by Brightley Brook from the east after which it is called Hollins Brook. The watercourse then passes under the M66, approximately 700m south of Junction 3. From here it flows west for approximately 1.2km before discharging into the River Roch. This watercourse receives runoff from the M62 highways network (via Outfall 3 described below).
Tributary 1 of Whittle Brook (Ordinary Watercourse - Bury MBC)	The tributary rises (SD835066) on the north side of the M62 flowing eastwards then in a northeasterly direction through the field adjacent to the M62 and Simon Lane (farm access track). The tributary appears to be culverted beneath Simon Lane before continuing north east past Unsworth Moss Farm and merging with Whittle Brook approximately 1.5km east of M60 J18.
Bradley Brook (Ordinary Watercourse - Bury MBC)	Bradley Brook rises (SD808045) on the south side of the M60 approximately 400m south west of Junction 17. The Brook flows through Philips Park, generally south westwards for approximately 1.6km before its confluence with the River Irwell. Bradley Brook is classified as an ordinary watercourse. The Brook has three tributaries, two of which are in the study area.
Tributary 1 of Bradley Brook (Ordinary Watercourse - Bury MBC)	The tributary rises (SD8000048) approximately 550m north of the M60 to the east of Philips Drive, from which it flows southwards through Whitefield Golf Course. It cross under the M60, approximately 650m west of J17 and after approximately 200m joins the Bradley Brook. This tributary receives runoff from the M60 highways network (via Outfall 6 described below).
Tributary 2 of Bradley Brook (Ordinary Watercourse - Bury MBC)	The source (SD794047) of this tributary is located approximately 800m west of the western end of the scheme extent. The tributary originates in woodland between Philips Park Jewish cemetery and Parkstone Avenue on the north side of the M60. It flows southwards for approximately 200m before being culverted under Philips Park Road and the M60 after which it flows for a further 500m in culvert under Outwood Farm. The watercourse is then in open channel for approximately 150m before entering Bradley Brook. DDMS records an outfall located immediately upstream of the M60 crossing on this watercourse. Based upon current knowledge, the drainage catchment of this outfall does not include areas within the scheme extent. This tributary is not considered further.
Heaton Park Reservoir (Bury MBC and Manchester CC)	Owned and operated by United Utilities, the reservoir lies approximately 750m directly south of M60 J18 and covers an area of some 33ha. The reservoir is fed by Haweswater aqueduct which carries up to 450,000m^3 of water per day from Haweswater in the Lake District to provide public drinking water to the Manchester region. The reservoir is not hydrologically connected to the watercourses within the study area (SD826049).
Other unnamed watercourses and drains	There are several unnamed drains and watercourses within the study area, some of which are small field and road drains. These watercourses do not receive road runoff and their alignment will not be impacted by the Proposed Scheme. Therefore, these watercourses are not considered further in the assessment.
Ponds, lakes and reservoirs	There are three ponds within 500m of the centre of M60 J18 associated with Egypt Farm, located to the north east of the junction; at their nearest, these ponds are approximately 75m from the eastbound carriageway. There are also several ponds within Pike Fold Golf Club. Some of these ponds may be man-made and not considered as natural features. Other ponds and lakes within the 1km study area have not been identified at this stage but are likely to not be directly affected by the Proposed Scheme and thus will not be considered further unless they are identified at the Environmental Statement stage as being affected by the works (this may depend upon construction compound locations etc. and land required for mitigation which is unknown at this stage). At present it is not known if ponds are groundwater fed or rainfall fed.