Works Approval Report.pdf - the National Capital Authority
Works Approval Report.pdf - the National Capital Authority
Works Approval Report.pdf - the National Capital Authority
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Campbell Section 5 - <strong>Works</strong> <strong>Approval</strong> Project Ref: 110029Prepared for <strong>the</strong> Land Development AgencyEasternCatchment230 haCampbell S5Catchment109 haFigure 8.1: Campbell Section 5 Catchment8.2.2 Existing Catchment Conditions Overland flowThe Campbell Section 5 site currently experiences a combined overland flow in a 100 year ARIstorm event of up to 4.8m 3 /s from its intersection with Anzac Park East and Page Street at <strong>the</strong>northwest of <strong>the</strong> site, down to its intersection with Creswell Street and Constitution Avenue in <strong>the</strong>sou<strong>the</strong>ast corner. The principal sources of this overland flow are along Anzac Park East from itsintersection with Blamey Crescent and overflows from road low points adjacent to <strong>the</strong> site in AnzacPark East, Chowne Street and Creswell Street.The stormwater pipe network in Campbell was built in <strong>the</strong> early 1930s and has very little capacitycompared to current design standards. It is estimated that <strong>the</strong> network surcharges in storm eventsgreater than approximately a 6 month ARI, resulting in localised ponding of water on Anzac ParkEast and on Constitution Avenue at its intersection with Creswell Street. In <strong>the</strong> more severe rainevents (greater than 6 month ARI), flooding occurs on Constitution Avenue near its junction withCreswell Street.November 2012 Cardno 46