Department of Infrastructure, Planning and Logistics
The Territory Government is progressing the Katherine Flood Mitigation project with a contract awarded to Cardno (NT) Pty Ltd for $298,080 to deliver a detailed design for flood mitigating embankments and wall levees, to better protect Katherine properties against flooding.
The embankment and wall levees, which form part of the structural mitigation recommendations from the Katherine Region Flood Mitigation Advisory Committee's Report, will:
· Increase Katherine's flood resilience; and
· Improves flood protection of Katherine residential areas in flooding events up to a 1-in-20 year event.
Department of Infrastructure, Planning and Logistics Senior Director Northern Region, Claire Brown, said the contract for detailed design will formalise the final design and alignment for these structural mitigation measures.
"The detailed design contract award forms part of the wider Katherine Flood Mitigation Project, which is centred on community safety and surety to protect the residents of Katherine and their properties from flooding events," said Ms Brown.
"We conducted extensive flood modelling which identified that levee banks and upgraded drainage will provide the greatest whole of town resilience to flooding events.
"The recommended levee designs, to be constructed on both the North and South sides of town, will include a combination of earth embankments, concrete walls and a temporary levee for road crossings," said Ms Brown.
The northern section flood levee:
· Will run from the northern side of Knotts Crossing Resort and Caravan Park, near the old Katherine Airstrip to the Stuart Highway.
· Will prevent overflows from Lockheed Drain during the 20-year (72-hour) flood event.
The southern section flood levee:
· Will run from the Katherine Country Club along the eastern side of South Katherine to the southern tip of South Katherine.
· Will prevent overflows from Tindal Creek during the 20-year, 18-hour, flood event.
