❓ A WA parliamentary question on notice regarding the Dawesville Channel and Mandurah entrance sand bypassing project, covering budget, timing, efficiency, and sand requirements. The Minister's response addresses each point, clarifying operational details and responsibilities.
AnsweredQoN 1172Legislative Assembly
QuestionView source ↗
(b) has there been a budget cut back to this project, and if so, how much; (c) is the time that the machines are used at the channel to pump sand northwards appropriate to the time used at the Mandurah entrance; (d) how many months are used at each entrance; (e) is the sand bar at Fairbridge Bank building up due to the bypass at Mandurah entrance not working efficiently; (f) if not, what is the reason; and (g) is it true that another 80,000 cubic metres of sand are needed for the Mandurah sand trap to get the beaches under control?
(c) is the time that the machines are used at the channel to pump sand northwards appropriate to the time used at the Mandurah entrance; (d) how many months are used at each entrance; (e) is the sand bar at Fairbridge Bank building up due to the bypass at Mandurah entrance not working efficiently; (f) if not, what is the reason; and (g) is it true that another 80,000 cubic metres of sand are needed for the Mandurah sand trap to get the beaches under control?
(d) how many months are used at each entrance; (e) is the sand bar at Fairbridge Bank building up due to the bypass at Mandurah entrance not working efficiently; (f) if not, what is the reason; and (g) is it true that another 80,000 cubic metres of sand are needed for the Mandurah sand trap to get the beaches under control?
(e) is the sand bar at Fairbridge Bank building up due to the bypass at Mandurah entrance not working efficiently; (f) if not, what is the reason; and (g) is it true that another 80,000 cubic metres of sand are needed for the Mandurah sand trap to get the beaches under control?
(f) if not, what is the reason; and (g) is it true that another 80,000 cubic metres of sand are needed for the Mandurah sand trap to get the beaches under control?
(g) is it true that another 80,000 cubic metres of sand are needed for the Mandurah sand trap to get the beaches under control?
b) No c) Yes, the timing of the bypassing operations at each site correspond to the periods of greatest littoral sand movements at these sites. Dominant wind and wave conditions move sand northwards into the Dawesville sand trap during summer, while storms move sand from Robert Point into the Mandurah sand trap during winter. d) The bypassing operations occur for 4 to 5 months at each site, each year. e) No f) Fairbridge Bank is a natural formation caused by natural sand movements. A navigation channel was dredged through this sand bank to provide access to the Port Mandurah canal estate. The requirement for maintenance dredging of this channel was acknowledged at the time that the Port Mandurah development was approved. The City of Mandurah receives differential rates from the residents of Port Mandurah to undertake the required maintenance works. g) No. It is noted that the beach immediately north-east of the Mandurah Ocean Marina is dynamic, and is influenced by both natural coastal processes and the sand bypassing operations. Variations in inter-annual weather conditions have caused the alignment of the foreshore to vary in recent years.
c) Yes, the timing of the bypassing operations at each site correspond to the periods of greatest littoral sand movements at these sites. Dominant wind and wave conditions move sand northwards into the Dawesville sand trap during summer, while storms move sand from Robert Point into the Mandurah sand trap during winter. d) The bypassing operations occur for 4 to 5 months at each site, each year. e) No f) Fairbridge Bank is a natural formation caused by natural sand movements. A navigation channel was dredged through this sand bank to provide access to the Port Mandurah canal estate. The requirement for maintenance dredging of this channel was acknowledged at the time that the Port Mandurah development was approved. The City of Mandurah receives differential rates from the residents of Port Mandurah to undertake the required maintenance works. g) No. It is noted that the beach immediately north-east of the Mandurah Ocean Marina is dynamic, and is influenced by both natural coastal processes and the sand bypassing operations. Variations in inter-annual weather conditions have caused the alignment of the foreshore to vary in recent years.
d) The bypassing operations occur for 4 to 5 months at each site, each year. e) No f) Fairbridge Bank is a natural formation caused by natural sand movements. A navigation channel was dredged through this sand bank to provide access to the Port Mandurah canal estate. The requirement for maintenance dredging of this channel was acknowledged at the time that the Port Mandurah development was approved. The City of Mandurah receives differential rates from the residents of Port Mandurah to undertake the required maintenance works. g) No. It is noted that the beach immediately north-east of the Mandurah Ocean Marina is dynamic, and is influenced by both natural coastal processes and the sand bypassing operations. Variations in inter-annual weather conditions have caused the alignment of the foreshore to vary in recent years.
e) No f) Fairbridge Bank is a natural formation caused by natural sand movements. A navigation channel was dredged through this sand bank to provide access to the Port Mandurah canal estate. The requirement for maintenance dredging of this channel was acknowledged at the time that the Port Mandurah development was approved. The City of Mandurah receives differential rates from the residents of Port Mandurah to undertake the required maintenance works. g) No. It is noted that the beach immediately north-east of the Mandurah Ocean Marina is dynamic, and is influenced by both natural coastal processes and the sand bypassing operations. Variations in inter-annual weather conditions have caused the alignment of the foreshore to vary in recent years.
f) Fairbridge Bank is a natural formation caused by natural sand movements. A navigation channel was dredged through this sand bank to provide access to the Port Mandurah canal estate. The requirement for maintenance dredging of this channel was acknowledged at the time that the Port Mandurah development was approved. The City of Mandurah receives differential rates from the residents of Port Mandurah to undertake the required maintenance works. g) No. It is noted that the beach immediately north-east of the Mandurah Ocean Marina is dynamic, and is influenced by both natural coastal processes and the sand bypassing operations. Variations in inter-annual weather conditions have caused the alignment of the foreshore to vary in recent years.
g) No. It is noted that the beach immediately north-east of the Mandurah Ocean Marina is dynamic, and is influenced by both natural coastal processes and the sand bypassing operations. Variations in inter-annual weather conditions have caused the alignment of the foreshore to vary in recent years.
(c) is the time that the machines are used at the channel to pump sand northwards appropriate to the time used at the Mandurah entrance; (d) how many months are used at each entrance; (e) is the sand bar at Fairbridge Bank building up due to the bypass at Mandurah entrance not working efficiently; (f) if not, what is the reason; and (g) is it true that another 80,000 cubic metres of sand are needed for the Mandurah sand trap to get the beaches under control?
(d) how many months are used at each entrance; (e) is the sand bar at Fairbridge Bank building up due to the bypass at Mandurah entrance not working efficiently; (f) if not, what is the reason; and (g) is it true that another 80,000 cubic metres of sand are needed for the Mandurah sand trap to get the beaches under control?
(e) is the sand bar at Fairbridge Bank building up due to the bypass at Mandurah entrance not working efficiently; (f) if not, what is the reason; and (g) is it true that another 80,000 cubic metres of sand are needed for the Mandurah sand trap to get the beaches under control?
(f) if not, what is the reason; and (g) is it true that another 80,000 cubic metres of sand are needed for the Mandurah sand trap to get the beaches under control?
(g) is it true that another 80,000 cubic metres of sand are needed for the Mandurah sand trap to get the beaches under control?
b) No c) Yes, the timing of the bypassing operations at each site correspond to the periods of greatest littoral sand movements at these sites. Dominant wind and wave conditions move sand northwards into the Dawesville sand trap during summer, while storms move sand from Robert Point into the Mandurah sand trap during winter. d) The bypassing operations occur for 4 to 5 months at each site, each year. e) No f) Fairbridge Bank is a natural formation caused by natural sand movements. A navigation channel was dredged through this sand bank to provide access to the Port Mandurah canal estate. The requirement for maintenance dredging of this channel was acknowledged at the time that the Port Mandurah development was approved. The City of Mandurah receives differential rates from the residents of Port Mandurah to undertake the required maintenance works. g) No. It is noted that the beach immediately north-east of the Mandurah Ocean Marina is dynamic, and is influenced by both natural coastal processes and the sand bypassing operations. Variations in inter-annual weather conditions have caused the alignment of the foreshore to vary in recent years.
c) Yes, the timing of the bypassing operations at each site correspond to the periods of greatest littoral sand movements at these sites. Dominant wind and wave conditions move sand northwards into the Dawesville sand trap during summer, while storms move sand from Robert Point into the Mandurah sand trap during winter. d) The bypassing operations occur for 4 to 5 months at each site, each year. e) No f) Fairbridge Bank is a natural formation caused by natural sand movements. A navigation channel was dredged through this sand bank to provide access to the Port Mandurah canal estate. The requirement for maintenance dredging of this channel was acknowledged at the time that the Port Mandurah development was approved. The City of Mandurah receives differential rates from the residents of Port Mandurah to undertake the required maintenance works. g) No. It is noted that the beach immediately north-east of the Mandurah Ocean Marina is dynamic, and is influenced by both natural coastal processes and the sand bypassing operations. Variations in inter-annual weather conditions have caused the alignment of the foreshore to vary in recent years.
d) The bypassing operations occur for 4 to 5 months at each site, each year. e) No f) Fairbridge Bank is a natural formation caused by natural sand movements. A navigation channel was dredged through this sand bank to provide access to the Port Mandurah canal estate. The requirement for maintenance dredging of this channel was acknowledged at the time that the Port Mandurah development was approved. The City of Mandurah receives differential rates from the residents of Port Mandurah to undertake the required maintenance works. g) No. It is noted that the beach immediately north-east of the Mandurah Ocean Marina is dynamic, and is influenced by both natural coastal processes and the sand bypassing operations. Variations in inter-annual weather conditions have caused the alignment of the foreshore to vary in recent years.
e) No f) Fairbridge Bank is a natural formation caused by natural sand movements. A navigation channel was dredged through this sand bank to provide access to the Port Mandurah canal estate. The requirement for maintenance dredging of this channel was acknowledged at the time that the Port Mandurah development was approved. The City of Mandurah receives differential rates from the residents of Port Mandurah to undertake the required maintenance works. g) No. It is noted that the beach immediately north-east of the Mandurah Ocean Marina is dynamic, and is influenced by both natural coastal processes and the sand bypassing operations. Variations in inter-annual weather conditions have caused the alignment of the foreshore to vary in recent years.
f) Fairbridge Bank is a natural formation caused by natural sand movements. A navigation channel was dredged through this sand bank to provide access to the Port Mandurah canal estate. The requirement for maintenance dredging of this channel was acknowledged at the time that the Port Mandurah development was approved. The City of Mandurah receives differential rates from the residents of Port Mandurah to undertake the required maintenance works. g) No. It is noted that the beach immediately north-east of the Mandurah Ocean Marina is dynamic, and is influenced by both natural coastal processes and the sand bypassing operations. Variations in inter-annual weather conditions have caused the alignment of the foreshore to vary in recent years.
g) No. It is noted that the beach immediately north-east of the Mandurah Ocean Marina is dynamic, and is influenced by both natural coastal processes and the sand bypassing operations. Variations in inter-annual weather conditions have caused the alignment of the foreshore to vary in recent years.
AnswerView source ↗
Answered
10 June 2003
Responded by
Minister for Planning and Infrastructure
Response time
91 days
a) Yes
b) No
c) Yes, the timing of the bypassing operations at each site correspond to the periods of greatest littoral sand movements at these sites. Dominant wind and wave conditions move sand northwards into the Dawesville sand trap during summer, while storms move sand from Robert Point into the Mandurah sand trap during winter.
d) The bypassing operations occur for 4 to 5 months at each site, each year.
e) No
f) Fairbridge Bank is a natural formation caused by natural sand movements. A navigation channel was dredged through this sand bank to provide access to the Port Mandurah canal estate. The requirement for maintenance dredging of this channel was acknowledged at the time that the Port Mandurah development was approved. The City of Mandurah receives differential rates from the residents of Port Mandurah to undertake the required maintenance works.
g) No. It is noted that the beach immediately north-east of the Mandurah Ocean Marina is dynamic, and is influenced by both natural coastal processes and the sand bypassing operations. Variations in inter-annual weather conditions have caused the alignment of the foreshore to vary in recent years.
b) No
c) Yes, the timing of the bypassing operations at each site correspond to the periods of greatest littoral sand movements at these sites. Dominant wind and wave conditions move sand northwards into the Dawesville sand trap during summer, while storms move sand from Robert Point into the Mandurah sand trap during winter.
d) The bypassing operations occur for 4 to 5 months at each site, each year.
e) No
f) Fairbridge Bank is a natural formation caused by natural sand movements. A navigation channel was dredged through this sand bank to provide access to the Port Mandurah canal estate. The requirement for maintenance dredging of this channel was acknowledged at the time that the Port Mandurah development was approved. The City of Mandurah receives differential rates from the residents of Port Mandurah to undertake the required maintenance works.
g) No. It is noted that the beach immediately north-east of the Mandurah Ocean Marina is dynamic, and is influenced by both natural coastal processes and the sand bypassing operations. Variations in inter-annual weather conditions have caused the alignment of the foreshore to vary in recent years.
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