What can I do with my back garden (on a slight slope down towards house) after all the rain, snow and ice has left it VERY marshy. There is already a French drain in garden (got job done in garden 6 months ago). Garden feels like a bog when we walk on it. I wouldn’t even be able to cut the grass until it has dried up a bit.
You need an outlet for land drains to a ditch or similar or you need to dig a soak-pit.
More information at: https://gardenie.wpengine.com/gerrycategory/drainage/?id=5414