In his pdc videos, Geoff Lawton talks about some banana circles he built that filled with water and overflowed. He dumped in mulch like normal and just kept digging more connected banana circles as they overflowed. Finally, when he reached the lower boundary of the property, he put in a swale to direct the flow back into the main stream. More water is an asset, not a liability. Maybe this can remain a tiny water feature instead of a mulch pit. A water ecosystem is very active.
Earthworks are the skeleton; the plants and animals flesh out the design.