Conventional stormwater drainage has been identified as a primary driver of the commonly observed, severe degradation of stream ecosystems in urban catchments (Walsh et al 2010; Wenger et al 2009) cited in Walsh et al 2012 | Conventional stormwater drainage has been identified as a primary driver of the commonly observed, severe degradation of stream ecosystems in urban catchments (Walsh et al 2010; Wenger et al 2009) cited in Walsh et al 2012 |