Environmental Damage - Native Fish
A collection of references | 23 June 2010
From NSW Government Primary Industries website
Barriers to Fish Passage
"In general, bridges and arch structures promote natural, unimpeded stream flow, allowing the free movement of fish underneath the structure during a wide range of hydrological conditions. However, bridges that are built too low, or whose piers and footings constrict the channel, can affect hydrological flows (e.g. excessive velocity and turbulence) and aquatic habitat conditions.
Culverts are waterway crossings with round or box-shaped cells, designed to convey flow beneath the roadway. Culverts can restrict fish passage by increasing flow velocities and turbulence and reducing flow depth through the structure...
You can read the whole article here
Note: Current plans in place for Collector Creek are a low-level box culvert, as referred to above
More about fish - from Riverina Environment Education Centre - NSW Department of Education and Training
Native fish species such as golden perch and Murray cod use the floodplains as a fish nursery where there is food and shelter for juveniles. The fish spawn during rising floodwaters...
You can read the whole article here
The low-level concrete culvert flies in the face of Government environmental plans...
"Identify and take action to improve fish passage on other structures that impede the two-way movement of native fish along streams or natural high-flow channels."
You can read the whole article here
Return to the Save Collector Creek home page here
(Click on image to enlarge)