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	2m
Current depth/Water level	N/Am
Water level offset	0.8m
Dam area	896.29m²
Maximum volume	908.57m³
Catchment area	198000.00m²

Water balance

Water balance forecasts

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

Dam area:

m²

Catchment area:

m²

Maximum volume:

m³

Maximum depth:

Current (Starting) depth:

Household demand:

people

Stock demand:

cattle

Stock demand:

sheep

Climate estimates Shape profile:

Changing any of the above variables will re-generate the charts and data tables.

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	43.7mm	249.7mm	210.3mm	200.5mm	182.5mm
February	1.6mm	11.4mm	20.7mm	29.9mm	433.6mm	370mm	359.4mm	334mm
March	9.5mm	19.7mm	29.2mm	36mm	337.4mm	307.6mm	293.6mm	261.4mm
April	13.6mm	21.1mm	37.7mm	52mm	244.9mm	225.2mm	203.7mm	187.7mm
May	25.7mm	37.9mm	54.4mm	62.3mm	164.9mm	130.5mm	113mm	107.8mm
June	14mm	38.1mm	50.2mm	68.1mm	88.5mm	76.4mm	72.5mm	66.2mm
July	38.4mm	45.7mm	57mm	72.9mm	70.9mm	64.1mm	61.3mm	59.2mm
August	28.9mm	37.4mm	57.6mm	69.3mm	99.6mm	87.6mm	81.7mm	76.5mm
September	30mm	39.6mm	50.9mm	61.2mm	149.3mm	131.3mm	126.7mm	122.5mm
October	12.1mm	29mm	43.4mm	75.6mm	248.8mm	195.1mm	189.2mm	176.7mm
November	30.7mm	44.4mm	49.8mm	58.2mm	330mm	268.8mm	254.2mm	232.6mm
December	8.6mm	30.9mm	40.1mm	43.5mm	390.9mm	342.8mm	314.1mm	301.7mm

Monitoring

Weather and soil moisture

Weather Station Dashboard (NON SSL)

Rainfields3 comparison

Water level

Spatial mapping

Developed by CeRDI

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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	43.7mm	249.7mm	210.3mm	200.5mm	182.5mm
February	1.6mm	11.4mm	20.7mm	29.9mm	433.6mm	370mm	359.4mm	334mm
March	9.5mm	19.7mm	29.2mm	36mm	337.4mm	307.6mm	293.6mm	261.4mm
April	13.6mm	21.1mm	37.7mm	52mm	244.9mm	225.2mm	203.7mm	187.7mm
May	25.7mm	37.9mm	54.4mm	62.3mm	164.9mm	130.5mm	113mm	107.8mm
June	14mm	38.1mm	50.2mm	68.1mm	88.5mm	76.4mm	72.5mm	66.2mm
July	38.4mm	45.7mm	57mm	72.9mm	70.9mm	64.1mm	61.3mm	59.2mm
August	28.9mm	37.4mm	57.6mm	69.3mm	99.6mm	87.6mm	81.7mm	76.5mm
September	30mm	39.6mm	50.9mm	61.2mm	149.3mm	131.3mm	126.7mm	122.5mm
October	12.1mm	29mm	43.4mm	75.6mm	248.8mm	195.1mm	189.2mm	176.7mm
November	30.7mm	44.4mm	49.8mm	58.2mm	330mm	268.8mm	254.2mm	232.6mm
December	8.6mm	30.9mm	40.1mm	43.5mm	390.9mm	342.8mm	314.1mm	301.7mm