Small Farm Dam Research Repository

South West (Corangamite) Dam 1 SW 1

Summary

Location: Pittong, Golden Plains Shire, Corangamite CMA

Primary Land use: Mixed farming, grazing
Australian Drainage Division: Southeast Coast (Division II)
Australian River Basin: Lake Corangamite (Basin 34)

Catchment Geology:
Miocene to Holocene Newer Volcanic Group: basalt flows (Neo) to the north
and Late Devonian Tiac Granite (G307) to the south.
Dam is constructed at the boundary of the Tiac Granite and Mt Bute Granite (G308) plutons

Catchment Geomorphology:
2.0 Western Uplands (Tier 1);
2.1 Dissected Uplands (Tier 2);
2.1.4 Hills, valley slopes and plains on plutonic Palaeozoic rocks (Tier 3)

Australian Soil Classification: Sodosols

Catchment Soils:

About

Location	-37.67269,143.47675
Shape Profile	Custom
Maximum depth when full	2m
Current (or actual) water depth	1m
Water level offset	0.8m
Dam area	896.29m²
Maximum volume	908.57m³
Catchment area	198000.00m²

Water balance

The rating curve chart shows the volume of the dam in relation to vertical water level.
The water balance forecasts chart shows the predicted water level and volume for various climate scenarios from the starting water level.

Chart options

Maximum depth when full:

Current (or actual) water depth:

Household demand:

people

Stock demand:

cattle

Stock demand:

sheep

Climate estimates

Auto calculated variables

Dam area:

m²

Catchment area:

m²

Maximum volume when full:

m³

Shape profile:

Dam rating curve

Water balance forecasts

20 year monthly climate range

Month	Rainfall range				Evaporation range
	Decile 1	Decile 3	Decile 5	Decile 7	Decile 10	Decile 7	Decile 5	Decile 3
	Drought	Dry	Average	Wet	Drought	Dry	Average	Wet
January	1.6mm	17.6mm	26.4mm	50.6mm	249.7mm	210.3mm	200.5mm	182.4mm
February	1.6mm	11.4mm	20.7mm	26.6mm	184.1mm	166.4mm	159.7mm	149.3mm
March	2.1mm	21.9mm	29.2mm	37.7mm	166.5mm	145.2mm	124.7mm	110.9mm
April	8.8mm	19mm	37.7mm	52mm	91.8mm	80.8mm	70.7mm	65.1mm
May	15.5mm	35.7mm	51.9mm	59.7mm	58mm	47.6mm	43.4mm	38.2mm
June	14mm	38.1mm	50.2mm	76.1mm	34.5mm	29.8mm	26.7mm	25.9mm
July	38.4mm	45.7mm	63mm	72.9mm	42.6mm	35.4mm	32.2mm	30.7mm
August	23.1mm	37.4mm	54.9mm	57.7mm	62.2mm	49.3mm	45.9mm	44.5mm
September	20.5mm	37.7mm	50.9mm	61.2mm	90.1mm	78.8mm	76.6mm	71.2mm
October	4.5mm	29mm	43.4mm	75.7mm	157.6mm	121mm	108mm	100.9mm
November	30.7mm	44.4mm	52.4mm	61.2mm	168.5mm	151.1mm	140.2mm	124.9mm
December	6.2mm	26.4mm	36.9mm	43.5mm	236.9mm	185.1mm	175.9mm	161.3mm

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Climate history

20 year monthly climate range

Month	Rainfall range				Evaporation range
	Decile 1	Decile 3	Decile 5	Decile 7	Decile 10	Decile 7	Decile 5	Decile 3
	Drought	Dry	Average	Wet	Drought	Dry	Average	Wet
January	1.6mm	17.6mm	26.4mm	50.6mm	249.7mm	210.3mm	200.5mm	182.4mm
February	1.6mm	11.4mm	20.7mm	26.6mm	184.1mm	166.4mm	159.7mm	149.3mm
March	2.1mm	21.9mm	29.2mm	37.7mm	166.5mm	145.2mm	124.7mm	110.9mm
April	8.8mm	19mm	37.7mm	52mm	91.8mm	80.8mm	70.7mm	65.1mm
May	15.5mm	35.7mm	51.9mm	59.7mm	58mm	47.6mm	43.4mm	38.2mm
June	14mm	38.1mm	50.2mm	76.1mm	34.5mm	29.8mm	26.7mm	25.9mm
July	38.4mm	45.7mm	63mm	72.9mm	42.6mm	35.4mm	32.2mm	30.7mm
August	23.1mm	37.4mm	54.9mm	57.7mm	62.2mm	49.3mm	45.9mm	44.5mm
September	20.5mm	37.7mm	50.9mm	61.2mm	90.1mm	78.8mm	76.6mm	71.2mm
October	4.5mm	29mm	43.4mm	75.7mm	157.6mm	121mm	108mm	100.9mm
November	30.7mm	44.4mm	52.4mm	61.2mm	168.5mm	151.1mm	140.2mm	124.9mm
December	6.2mm	26.4mm	36.9mm	43.5mm	236.9mm	185.1mm	175.9mm	161.3mm