Clean, Green, Sustainable 2017-2031, Wildlife Conservation Partnership Program, Light up Brisbane and hang a bridge banner, Environmental nuisance complaints process, Aboriginal and Torres Strait Islander programs, Lesbian, gay, bisexual, transgender, intersex and queer, Connecting to Council's stormwater system - information for developers (PDF - 663kb), Connecting to Council's stormwater system - information for neighbours (PDF - 663kb), guidelines for using or closing a road or footway, Brisbane Metropolitan Touch Association maintenance shed upgrade - Camp Hill, Brisbane City Council Libraries Covid-19 Customer Registration Confirmation, natural ground seepage on private property, diverting or blocking the natural flow of water from landscaping, fences and walls or a small trench (except where water collects and becomes stagnant), are a lawful point of discharge (provided they are designed and constructed lawfully). We don’t get the diversity that we would have seen – it’s not pristine by any stretch – but it is not a dead system, either.” 2. “Australia has dodged that bullet, really.” However, toxic firefighting foam has killed fish in sections of the Bremer River and, in April last year, towards the mouth of the Brisbane River. Examples include soil, sand, silt, mud, building waste, concrete, paint, green waste, and car, roof or driveway cleaning runoff that are released either directly, or through roadside gutters and stormwater drains. Urban Utilities performs smoke testing. Two of Queensland’s leading river ecologists, Australian Rivers Institute director Stuart Bunn and Healthy Land and Water principal scientist Paul Maxwell, agree hard policy decisions need to be made. “Algae grows in the light if nutrients are prominent, if they drop then seagrass emerges. Pollution, flooding and nuisance issues from stormwater runoff can result in environmental harm, damage to property and distress to residents. During extreme floods, Professor Bunn said, sediment could flow from the Lockyer Creek to Moreton Bay in 48 hours, while in normal flow times it could take seven years. It is not a requirement of Council unless the site is redeveloped or the integrity of the 'grey line' is compromised and alternate drainage is sought. Too much phosphate in the Brisbane River can cause algae and weeds to choke waterways, further reducing the amount of oxygen in the river. That means less oxygen, more algae, a lot more sediment from more frequent storms, more expensive water and “potentially disastrous effects on aquatic ecosystems”. It is still there in the sediment. A remote-controlled underwater dredger was deployed to excavate and clean out a blocked stormwater drain that discharged into the Brisbane River. “We don’t discharge heavy metals any more but we have a lot of heavy metals in the sediments of the river, of course.” Dr Maxwell said the heavy metals would remain mostly inert until the next flood turned over the mud. Council investigates water pollution discharged to the city's waterways, catchments and bay. The Port of Brisbane reportedly spent $20 million after the 2011 flood dredging sediment from the river to keep the city's shipping channels open. There is now a new mangrove bed on the Brisbane River at Chelmer, where mangroves have grown since the 2011 flood. “So what I think has happened is that algae replaced seagrass from 1996 to 2009.”. That became reality in 2014, when oil tankers were blocked by silt. “Underneath the bridge at QUT we found a whole bunch of bream, a whole bunch of threadfin salmon and a mangrove jack about 45cm long,” Dr Maxwell said. In the mid-Brisbane River catchment around the city and western suburbs, nitrogen is higher than the maximum level in all 1190 tests.
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