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We have a channel leading from our small backyard patio (where the rain barrel and downspout are) to a dry-bed (which hasn't been dry lately!).

Anyway, I haven't lined anything yet (was planning on doing so with landscape fabric), we just finished digging it out last weekend, but the channel is now a mini-Grand Canyon.

The one in the front that I dug out last year doesn't have such a channel, so I haven't had erosion problems, but now I am thinking this new channel will have some.

The channel is about 14 feet long - do you think that landscape fabric and fist-sized rocks on top will be enough to contain the erosion? If not, what else could I do?

Thanks,

Jennifer
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An easy (and cheap!) solution would be to slit a few heavy-duty black plastic trash bags, fold them double lengthwise and use the to line the channel, overlapping by about a quarter their length. Then, cover them with rocks and you're all set.

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It should..... the bigger rip rap rocks you can get the better, I'd say. Over a few years it's gonna start filling in with silt and you will have to weed it out but the fabric should help for the first year or so.
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