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Jounama Dam - NSW

Radial gate steel

Spillway scour sculpting

Small hydro construction July 2008

New access ramp

Spillway steelwork

Triple gated spillway

Spillway apron in solid granite

Blowering backwaters rising

Reflections at full supply level

Jounama Small Hydro Jan 2010

Reservoir,Dam

Position

DEG: -35.563629 148.306625

DMS: 35º 33' 49.06" S 148º 18' 23.85" E

UTM: 55 H 6063664mN 618412mE

Altitude: 382m

Address & Contact

Jounama Pondage New South Wales 2720

Phone: N/A

Email: N/A

Web: N/A

Information

The rockfill wall of Jounama dam forms a pondage with a gross capacity of 45.5 GL. This allows pumping of up to 28 GL by Tumut 3 Power Station. This used to be usually at off-peak times say from 1 am to 5 am and thus at a lower cost to Snowy Hydro. Now with a daytime surplus of solar power the pumps often run from 10 am to 3 pm.The same water is used to generate peak demand power around 8 am or 6 pm, earning the Snowy four times what it costs to pump up into Talbingo Res. During a year more than 1000 GL passes from Jounama into Blowering via a small hydro station producing 14.4 MW. If Blowering water level is too high the spillway with its three combined radial gates is put into operation.

PlaceID	68100

Map

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Nearby Places (28)

Wildflowers

Weather

Closest Weather Station

Tumbarumba at 16/09:00am EST

Distance from Jounama Dam 35.56km SW

Temperature	Feels Like	Rel. Humidity	Dew Point	Pressure	Rainfall	Wind Direction	Wind Speed	Gusts
2.0°C	0.1°C	91%	0.7°C	hPa	2.0mm	CALM	0km/hr 0knots	km/hr knots

Closest Climatic Station

Tumbarumba Post Office

Distance from Jounama Dam 35.56km SW

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Mean Max. °C	28.8	28.3	25.0	19.9	15.2	11.7	10.6	12.2	15.2	19.3	22.6	25.9
Mean Min. °C	12.0	12.0	8.7	4.9	2.3	0.2	-0.2	0.9	3.0	5.2	7.6	9.5
Mean Rain mm	62.0	54.9	66.8	65.4	82.2	101.9	105.1	107.2	91.0	96.5	74.9	70.8