Marshalls Creek Floodplain - FLOOD MITIGATION STRATEGIES

3D mapping image 2004 - NSW Department of Finance, Services and Innovation - CLICK TO ENLARGE

FLOOD STRATEGIES

CASE STUDY COMPONENT 4
Suggested Solutions
The following ideas have been raised by the community as possible methods for preventing/minimising flooding. These will be discussed separately.

NOTE: Numbers 1-9 correspond with numbers on aerial photo above. Please click on photo to enlarge.

1. Improve and maintain drains through the Industrial Estate at Billinudgel to ensure drainage has the capacity to divert floodwater around village.

2. Build a levee around Billinudgel.

3. Construct a levee/ flood storage to the west of Billinudgel to spread the peak flow of floodwaters at Billinudgel and downstream.

4. Discharge water that ponds between South Golden Beach and New Brighton into ocean by either ocean outfalls or flood pumps.
See Slides 21, 33 right column.

5. Open ocean outflow to north of South Golden Beach to discharge water from Billinudgel Nature Reserve into ocean instead of entering South Golden Beach.
See Slides 37 right column.

6. Pump the water from inside the levee at South Golden Beach into the ocean, not back into the flood water to re-circulate back into South Golden Beach.

7. Fix the drainage internally in South Golden Beach and ruggedise the pumps to not fail during a flood.

8. Dredge Marshalls Creek to allow it to carry greater volumes of water and not flood.
See Slides 31, 32 right column.

9. Remove the rock walls at Brunswick River to allow flood water from Marshalls Creek to discharge faster.
View video where dredging is discussed, also see Slides 19, 20, 30, 31, 32 right column.

CASE STUDY COMPONENT 5
Suggested Solutions - North Byron Sky Pump Proposal
The following strategy has been raised by the community as a possible method for preventing/minimising flooding. The proposal will be investigated separately and will need to be modelled before determining if it would prove to be a successful solution.

10. Identify 3 locations along the coastline from Wooyung to Brunswick River mouth to position 3 flood pump for the removal of excess floodwater to the ocean. Click here to access the North Byron Sky Pump proposal.

____________________________________________________________________________

Community Feedback
Opportunity for the community to present additional information to reduce the flood heights on the floodplain.
click here to access community feedback.