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Happy Jacks Dam - NSW

T/O to Happy Jacks on Tooma Rd

Intake structure submerged

Tunnel spoil rehabilitation behind bridge - Oct 2014

Spill of 14 cumecs October 2014

Spillway crest 30 m long

Intake structure trashracks exposed,Tumut River behind

Downstream face with ungated spillway and flip bucket

Reservoir,Dam

Position

DEG: -36.0022 148.44957

DMS: 36º 00' 7.92" S 148º 26' 58.45" E

UTM: 55 H 6014836mN 630647mE

Altitude: 1229.48m

Address & Contact

Cabramurra NSW

Phone: N/A

Email: N/A

Web: N/A

Information

Happy Jacks is the first of 6 dams downstream from the source of the Tumut River. It captures spring snowmelt for diversion down the intake shaft into the Eucumbene -Tumut tunnel and into Lake Eucumbene. The flows of the Tumut and Happy Jacks Rivers usually pass through the dam via open river outlet conduits in the base of the dam. These are closed during high flows for diversion when the shaft control gates are open. With the shaft and conduits both closed the dam will spill. The pondage is only likely to be seen by keen skiers or cyclists as it is 9 km from the main road. See You Tube for spill March 2012.

PlaceID	73810

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Nearby Places (42)

Wildflowers

Weather

Closest Weather Station

Cabramurra at 02/04:30am EST

Distance from Happy Jacks Dam 9.69km NW

Temperature	Feels Like	Rel. Humidity	Dew Point	Pressure	Rainfall	Wind Direction	Wind Speed	Gusts
3.7°C	1.2°C	57%	-4.0°C	hPa	-mm	CALM	0km/hr 0knots	0km/hr 0knots

Closest Climatic Station

Cabramurra Smhea Aws

Distance from Happy Jacks Dam 9.69km NW

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Mean Max. °C	21.6	20.9	17.5	12.9	8.7	5.3	3.8	4.9	8.7	11.9	15.8	18.2
Mean Min. °C	11.5	11.3	8.7	5.7	2.8	0.4	-0.9	-0.4	1.7	4.0	7.3	8.8
Mean Rain mm	43.7	85.3	80.3	66.8	77.3	112.2	110.0	129.3	130.6	104.4	111.8	82.8