Originally uploaded by big mike - montana.
West Bozeman has many irrigation ditches. Typically, grass and trees are allowed to grow uncut along the ditches as long as they don't interfere with the flow of water. An irrigation ditch is much more pleasant than a stormwater-runoff ditch.
When the sluice gates are open, the water flows pretty fast. This seems to scour the bottom, so I don't know if any fish or invertebrates live in these ditches.