Projects
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Flood Mitigation, Project Management, Consultation & Detail Design
Moree Feasibility Study of Flood Risk Management Plan Recommended Options – Moree Plains Shire (NSW)
DSE in partnership with Water Modelling Solutions are undertaking a feasibility of the recommended options from the Moree Flood Risk Management Plan. The project involves:
Community and landowner consultation
Investigation and review of planning controls
Preliminary design of structural measures to assist in safe evacuation during a flood
Feasibility assessment of a town levee
Investigation measures to share property flood information with residents
Jindera and Walla Walla Flood Mitigation Project – Greater Hume Shire (NSW)
DSE are working with Greater Hume Shire in southern NSW to undertake the detail design of flood mitigation diversion channels in the rural townships of Jindera and Walla. The project began in June 2020 and involves the following:
Project Management
Organisation of site investigations (geotech, survey, environmental)
Landowner consultation
Authority liaison
Detail design of channels
Cost Benefit Analysis
McLennan Road Ararat
Dryside Engineering's Ararat Office is currently designing the new section of McLennan Road between Alfred & Heath St Ararat, including the crossing of a tributary of the Hopkins River.
A large section of the road will be inundated in large flood events and hence the road pavement and verges have been designed to accommodate flood water
Mornington Peninsula Flood Mitigation Feasibility Projects
DSE have been working with Water Modelling Solutions on two projects for the Mornington Peninsula Shire Council; Rosserdale Crescent Outfall and Lawson Park.
The Rosserdale Crescent project entailed the redesign of an unsightly beach outfall and the improvement of the upstream drainage to reduce localised flooding.
The Lawson Park project involved investigating the feasibility of a combined detention/stormwater harvesting system to reduce localised flooding and provide harvested water for Lawson Park for irrigation and use in the community gardens.
Both projects involved flood modelling, concept designs and cost estimates with MUSIC being used for the Lawson Park project to size the stormwater harvesting component.
Waterway & WSUD Design
Karrawirra Parri (River Torrens) Erosion Design
DSE were engaged by Norwood Payneham St Peters Council to remediate a section of Karrawirra Parri (Torrens) that had been eroded by river flows and a urban drainage outlet.
DSE designed a solution with Carey Gully rock that respected the high pedestrian use of the river paths in the area and designed the new outlet so that it dissipated velocities and blended into the bank
St Peters St Streetscape Upgrade WSUD
DSE partnered with Landskap Landscape Architects on the upgrade of St Peters St. Our work focused on implementing the following WSUD elements into the design:
Vegetated Litter Traps
Infiltration Swales
Permeable Paver channels between footpath garden beds
1St Creek Adelaide
DSE undertook a multipurpose pedestrian bridge, parklet and flood mitigation project for the City of Norwood Payneham & St Peters. The project encompassed the following:
Pedestrian bridge upgrade to include DDA compliant approaches
Upgrade of parklet to include overland flow path and WSUD
Flood mitigation in the form of a raised crossing to divert flood water towards the creek
DSE are worked with Landskap landscape Architects on the project.
3rd Creek Naturalisation Feasibility
DSE were engaged by Norwood, Payneham & St Peters Council to undertake an investigation into the feasibility of naturalising two sections of 3rd Creek in Adelaide. The investigation included:
Modelling of altering waterway from concrete channel to vegetated banks to check impacts of the 1& AEP flood levels
Concept plans of naturalised waterway
Concept plans of a sediment basin to improve the quality of water being drawn for a local stormwater harvesting system
Cost estimate to undertake the works
Process to turn the concepts into a capital project
Wollondilly WSUD Guidelines Concepts & Costing’s
DSE have been working with WMA Water on a project for Wollondilly Council in NSW that is investigating the cost and land take implications of Council’s proposed new WSUD policy. The new WSUD policy is major paradigm shift in stormwater management practice as it based on volume reduction entering waterways as opposed to the traditional methods of peak flow detention and water quality pollutant reduction targets.
DSE prepared plans and costing’s for the following scenarios so that the policy can be explained to developers large and small:
50 Lot Subdivision – Business as Usual, New WSUD Policy with Rainwater Tanks, New WSUD Policy without Rainwater Tanks (3rd Pipe/recycled water available)
10 Lot Infill Subdivision (i.e. Townhouses) – Business as Usual, New WSUD Policy with Rainwater Tanks, New WSUD Policy without Rainwater Tanks (3rd Pipe/recycled water available)
2 Lot Subdivision – Business as Usual, New WSUD Policy with Rainwater Tanks, New WSUD Policy without Rainwater Tanks (3rd Pipe/recycled water available)
2nd Creek GPT – Department of Water and Environment / City of Norwood St Peters and Payneham
DSE in partnership with Cardno are redesigning the GPT at the outlet of Second Creek into the Torrens River in St Peters, Adelaide, SA. This project involves:
Improve asset condition longevity by ensuring the design can withstand and perform under anticipated flow conditions;
Consider and where feasible ensure and improve maintenance access and public safety risks;
Improve the amenity at the outlet with consideration of the GPT design and complimentary features including screening vegetation;
Ensure the design establishes community linkages which may include the use of alternate signage.
Stormwater Management Plans
DSE can prepare your subdivision or development a stormwater management plan/strategy (SWMP) that meets Council and/or Catchment Management Authority requirements.
Our SWMPs include:
Water Quality requirements (MUSIC)
Detention requirements (RORB or InSite)
Legal Point of Discharge
Catchment Management Authority requirements
Managing external overland flows
We’ve undertaken SWMPs across Victoria in the following locations:
Melbourne (Dandenong, Hallam, Heidelberg, Rockbank, Tarneit)
Ballarat
Benalla
Cobram
Kyabram
Strathfieldsaye
New Gisborne
Ocean Grove
Geelong
Chiltern
Rutherglen