Not sure if this is something the community here has interest in.

A section of the creek bank has fallen away, revealing that all of the soil has been recently deposited (~ last few decades). The garbage inclusion likely spreads for dozens or maybe hundreds of cubic meters of earth. We don’t want to disturb the soil to clean this out so we’re limited to surface level cleaning.

On the flipside: it’s lots of deep fertile topsoil. The fast growing weeds, like lantana, absolutely love it.

  •  WaterWaiver   ( @WaterWaiver@aussie.zone ) OPEnglish
    0•10 months ago

    More info that I can ramble on about:

    • Predominantly sandstone area, so this depth of soil is only seen in the lowest areas of valleys. Otherwise the soil depths is typically 30cm or so.
    • Sewage infrastructure follows the creek, so where it overflows you see plants like tomatoes popping up.
    • Creek width and bigger floodplains developing in nearby bushland over the past 100 years (likely due to soil drainage lowering in surrounding areas).
    • Much of the creek is hand-paddle-boating only (no powered propulsion) because of fears of churning up the sediment from prior decades of polluting industry.