Great day out
Cowwarr Weir is popular for recreation and non-powered water activities and is an ideal day destination.
It is a pretty area, well patronised for swimming, kayaking, fishing and picnicking, with lots of shady spots by the water. There are pleasant walks around the reserve and it is popular with bird-watchers
Cowwarr Weir is located in Gippsland near the township of Cowwarr.
Cowwarr supplies water to the Macalister Irrigation District and levels can vary throughout the year.
Hours of operation
Cowwarr Weir is open between
Facilities and what to do
Cowwarr Weir is popular for kayaking, fishing, swimming and picnicking. There are picnic tables and toilets and but please note there are no bbq facilities.
No powered boats are allowed on the weir and camping is prohibited.
Facilities and activities include:
While visiting our facilities you are not permitted to:
- camp or stay overnight
- have fires or fire pits
- leave rubbish - all our sites are carry in carry out zones
- reserve any picnic areas
- drive or ride motorbikes along the shoreline or in fenced areas
- enter prohibited areas
- vandalise the facilities
- hunt, carry or discharge a firearm
- ride or walk horses anywhere, including in the water.
Request to hold events
From time to time, people wish to hold events at our recreational facilities including festivals, birthday parties and weddings. We cannot close or our recreational facilities for private events and you can not book sites.
You must have permission to hold any organised entertainment, rally, boating event or regatta, festival, public meeting, training class or demonstration, wedding or similar ceremony, or private functions for 30 or more people.
Please email us to with your request in writing.
Cowwar Weir History and Operations
Cowwarr Weir is a concrete gravity structure with three steel vertical lift spillway gates for regulating water supply from the Thomson River to the MID.
During an exceptional flood in 1952, the Thomson River formed a breakaway course through a series of depressions beginning at the point where the river emerges from the foothills on to the river plains. The new course continues east to rejoin the original course near Heyfield. The distance of the new course between the breakaway and rejoining points is much less than that of the former course, while the fall between the two points remains the same.
In 1959 the Cowwarr Weir and diversion channel were constructed at the point where the breakaway course of the Rainbow Creek begins. The weir allows control of water flow along the breakaway and to divert water to the area south of the Thomson River along the Cowwarr Channel to supplement water from Lake Glenmaggie for irrigation in the Nambrok-Denison area.
Cowwarr Weir was built to service the Macalister Irrigation District (MID) in Gippsland.
Thomson River water is diverted via the Cowwarr Weir channel generally at the beginning of the spring months to irrigate the Nambrok-Denison Area. This enables water to be conserved in Lake Glenmaggie for as long as possible, thus maximising the water available to the irrigation district. Under normal conditions during the irrigation season the Cowwarr Weir Pool is maintained at or near the full supply level.
|Surface area||14.1 ha|
|Full supply level||40.50 m AHD|
|Full supply level||77.1 m AHD|
|Catchment area||1,942 km2|
|Maximum height||5 m|
|Crest length||120 m|
|Discharge capacity||500,000 ML per day|
Cowwarr Weir is located on Rainbow Creek, which is a breakaway section of the Thomson River near the Cowwarr township in Gippsland – Melway reference Map 82 C9.