Merri Creek Management Committee

Site location mapYARRA BEND PARK, NORTHCOTE & COLLINGWOOD - MERRI CREEK/YARRA RIVER CONFLUENCE, DIGITATE DELTA

LOCATION: YARRA 5000/04.06 E23950 N16750

Immediately upstream of Dights Falls by the Eastern Freeway crossing of the Merri Creek.

ACCESS: Trennery Cr. and Merri Path.

OWNERSHIP & MUNICIPALITY: Public Land (Dights Falls Park) City of Collingwood (west/right bank), City of Northcote (east/left bank).

SITE DESCRIPTION: At the confluence of the Merri Creek and Yarra River, a deltaic deposit of clay, silt, sand and gravel has extended the course of the Merri Creek into the channel of the Yarra River just upstream of Dights Falls. The ponding of water by the falls reduced the velocity of the current of the Yarra River and deltaic growth occurred as the faster moving waters of Merri Creek slackened and sediment was deposited. The natural delta was of digitate form and consisted of parallel "silt jetties", with the eastern jetty" being a prominent narrow extending for about 300 metres. The delta has been substantially modified by road and bridgeworks of the Eastern Freeway. The meander of the Yarra River into which the Merri Creek debouched has been truncated by these works and the linear deltaic form has been lost. Much of the apparent "deltaic" deposit at the site is actually artificial fill although pebbles of basalt and Silurian mudstone and sandstone in the creek channel illustrate the hard rock geology of the catchment of the two streams.

SIGNIFICANCE RATING: LOCAL

This is a very disturbed site. Although a small deltaic form can still be discerned, the context of the site has been lost as a result of the Freeway engineering works.

SITE SENSITIVITY, THREATS, POTENTIAL UTILISATION

CLASS 3. This is only a partly natural site and the sensitive elements have been substantially altered due to channelisation of the creek and the road and bridgeworks. The major attribute of the site is that it forms a natural platform to view the outcrops of Silurian rock at Dights Falls.

REFERENCES: None are known.

Merri Creek digitate delta

Photograph 2. Merri Creek delta.

Merri Events Calendar

26 Mar 2017;
11:00AM - 05:00PM
Waterwatch stall at the Darebin Kite Festival

01 Apr 2017;
01:00PM - 03:00PM
MECCARG Site Maintenance

02 Apr 2017;
10:00AM - 12:00PM
Litter Clean Up – East Brunswick (Friends of Merri Creek)

02 Apr 2017;
02:00PM - 03:30PM
Streamteam Water Quality Testing (Friends of Merri Creek)

06 Apr 2017;
06:00PM - 07:30PM
Frogs of Edwardes Lake

09 Apr 2017;
10:00AM - 12:30PM
Friends of Merri Creek Weeding at Strettle Wetland