Rain's Plenty

It is an absolutely gorgeous day. It started out muggy and sweaty and sticky, but then it started sprinkling. Within a half hour, it was a wonderful downpour. So far, we've gotten just over a half inch.

During that time, I was out playing, er, I mean *working* on the irrigation ditches I've got set up to take water away from the garage, and then also into the lower part of the side yard. Now that I'm back inside, out of my drippy clothes and enjoying watching it rain, I decided to make some calculations as only a nerd who likes to play in th rain can do...

There are 231 cubic inches in every US gallon. So, estimating the run-off from the one part of the roof and the portion of the driveway that I have draining into the side yard, I channel almost 200 gallons per 1/2" of rain. I'm also allowing another 200 gallons to be absorbed by a maple tree's drip line, rather than sitting on the garage foundation by having a trench dug to spread the water out.

Both of these ditches, with 1 having 2 branches to spread the wealth even more, means I'll have healthier perennials and far less run-off into town storm drains. It's free water! Why not use it?