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	2m
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	2.1mm	21.8mm	34.4mm	50.6mm	249.7mm	210.3mm	200.5mm	182.4mm
February	1.6mm	11.4mm	20.7mm	29.9mm	184.1mm	163.8mm	155.6mm	149.3mm
March	9.5mm	21.9mm	29.2mm	37.7mm	166.5mm	145.2mm	124.7mm	110.9mm
April	13.6mm	25.1mm	40.5mm	52mm	91.8mm	79mm	70.6mm	65.1mm
May	15.5mm	37.9mm	54.4mm	62.3mm	58mm	47.2mm	42mm	38mm
June	14mm	38.1mm	50.2mm	76.1mm	34.5mm	29.8mm	26.7mm	25.9mm
July	40.7mm	48.4mm	59.4mm	72.9mm	42.6mm	35.6mm	32.2mm	30.7mm
August	23.1mm	35.1mm	54.9mm	57.7mm	62.2mm	53.1mm	47.1mm	44.5mm
September	20.5mm	37.7mm	50.9mm	61.2mm	91.8mm	79.6mm	76.9mm	71.3mm
October	4.5mm	26.9mm	40.9mm	75.6mm	157.6mm	118.8mm	108mm	100.9mm
November	19.7mm	39.5mm	49.8mm	58.2mm	173mm	152.8mm	140.2mm	124.9mm
December	6.2mm	25.7mm	36.9mm	43.5mm	236.9mm	185.7mm	176.6mm	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	2.1mm	21.8mm	34.4mm	50.6mm	249.7mm	210.3mm	200.5mm	182.4mm
February	1.6mm	11.4mm	20.7mm	29.9mm	184.1mm	163.8mm	155.6mm	149.3mm
March	9.5mm	21.9mm	29.2mm	37.7mm	166.5mm	145.2mm	124.7mm	110.9mm
April	13.6mm	25.1mm	40.5mm	52mm	91.8mm	79mm	70.6mm	65.1mm
May	15.5mm	37.9mm	54.4mm	62.3mm	58mm	47.2mm	42mm	38mm
June	14mm	38.1mm	50.2mm	76.1mm	34.5mm	29.8mm	26.7mm	25.9mm
July	40.7mm	48.4mm	59.4mm	72.9mm	42.6mm	35.6mm	32.2mm	30.7mm
August	23.1mm	35.1mm	54.9mm	57.7mm	62.2mm	53.1mm	47.1mm	44.5mm
September	20.5mm	37.7mm	50.9mm	61.2mm	91.8mm	79.6mm	76.9mm	71.3mm
October	4.5mm	26.9mm	40.9mm	75.6mm	157.6mm	118.8mm	108mm	100.9mm
November	19.7mm	39.5mm	49.8mm	58.2mm	173mm	152.8mm	140.2mm	124.9mm
December	6.2mm	25.7mm	36.9mm	43.5mm	236.9mm	185.7mm	176.6mm	161.3mm