We got over an inch and a half of rain in about thirty minutes today. The rain poured off the roof through the channel we asked the roofers to provide last summer. The torrent went into the basin, which is also a biological filter, and then into the stream and ponds. By the waterfall, rocks on the patio hide a slot in the stream wall. In the video, the water that looks like it is pooling up on the patio is actually headed into the stream through that slot. Soon, the bottom pond overflowed into the rain garden, where the rich soil and roots soaked it up as planned.