I built this water garden some 15 years or so ago, and it still is a continuing source of wonder and joy. At the time a junior family member was being a total shit--big time--and digging the BIG hole was so totally therapeutic. The physical labor was the outlet for my psychological frustrations.
(NOTE: the family member in question is a wonderful, responsible adult now, so all's well that ends well).
There actually is a connection to Ultrarunning. When I worked for the Defense Department before I retired, I often would have meetings at the Pentagon or at Crystal City nearby. When overnight stays were required, I would stay in Crystal City (adjacent to Reagan National Airport) and would run along the Mount Vernon Trail, which parallels the Potomac River. I would run upstream along the Mount Vernon Trail to Theodore Roosevelt Island opposite Rosslyn and Georgetown.
Once on the island, there are a number of trails to run on. One in particular is along the boggy lowlands near river level, and I vividly recall one spring seeing a ton of wild iris blooming, just like in my water garden.