What types of erosion control could I use under a solar array? I have a 10 panel setup and over this last spring runoff has washed away parts of my driveway. The property is located in the Arizona high desert in a Juniper Pine forest, no grasses, lots of large rock and clay. I'm considering installing a rain gutter under the panels and putting in a culvert to direct the water under the driveway. I would prefer to harvest or use the water in some way but can't think of any real options. Run off is on the Eastern side so I would be concerned about planting anything that could shade the panels. I've included a photo to give you a general idea of what the area looks like. Unfortunately this is the best photo I have. It's old and doesn't show the area as completed but the run off is in this exact location.
Linda I highly recommend you mulch with wood chips. They will help soak the water into the dirt rather than running off. You can also ditch and divert. Check out Brad Lancaster videos on YouTube and his website https://www.harvestingrainwater.com/ He's out of Tucson.
A few pictures of drains into a buried hugelkulture on our land. The black rock catches debris before it flows into the beds. You may also consider a ground cover of mint, it will hold soil well and need little to no care.
I removed a rain gutter on my house and noticed the dutch white clover really took off on the new drip line. The clover in my back yard has reached 12-18" but no taller. I'd suggest you find a ground cover suited for the site and plant that, and you can also try adding a little swale along contour to stop surface water flow down the slope. Some mulch to hold the dirt in place until the ground cover grows in should help too.
I'm not quite a lumberjack, but that's OK, I sleep all night and I dream all day; I'll coppice trees, I'll grow my food, and compost poo and pee! With a well and off-grid solar, it's a permies life for me! https://www.youtube.com/watch?v=FshU58nI0Ts
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