 Damming of the Canning caused dramatic flow reductions that significantly altered downstream aquatic macroinvertebrate communities . The lack of water flow has also resulted in a poor flushing effect below the dam wall . An excessive amount of nutrients from fertilizers and animal waste has caused algal blooms and eutrophication . 
 Damming of the Canning caused dramatic flow reductions <a href='null_relcl' title='1'><mark>that</mark></a>significantly altered downstream aquatic macroinvertebrate communities . The lack of water flow <a href='been_done' title='2'><mark>has</mark></a> also resulted in a poor flushing effect below the dam wall . An excessive amount of nutrients from fertilizers and animal waste <a href='been_done' title='3'><mark>has</mark></a> caused algal blooms and eutrophication . 
Damming of da Canning caused petty flow reductions significantly altered downstream aquatic macroinvertebrate communities . The lack of water flow done also resulted in a poor flushing effect below the dam wall . An excessive amount of nutrients from fertilizers and animal waste done caused algal blooms and eutrophication .