Really glad you posted your micro hydro system. I have a similar project started. I hand dug a 30,000 gallon pond and have the vinyl liner waiting for me in Florida. I have a 100-120' elevation change, depending on where I place the turbine.
My difference is, the spring fed creek is at the bottom of the elevation, so, almost useless. I replaced the galv roofing on the house this year and want to put up gutters to collect all the rain we get, and pipe it downhill into the pond I dug. I calculated I can get 300 watts of power for 10 hours if I drain down the pond from full, which will take 7" of rain at a time, if I catch all the rain from guttering the house and the workshop. Also, I can lay heavy plastic sheeting among the trees and catch a lot more rain without hurting the trees.
Problem I have is separating the leaves and twigs from the collection pond. HOWEVER, I believe you have provided the cure for my problem. I can get a 350 gallon plastic "tote" and dig it in the ground right below the outflow pipes from the pond, and, use a piece of that screening you used, to filter off all the leaves and stuff that will come out of the pond. Everything from the foot of the pond is downhill, so, I won't lose but 3' of head by doing this, and, I can easily clean up the trash from the screen with a rake every few days or whatever.
Also, I have pontoons from an old gold dredge that I have built 2 motorcycle wheel waterwheels using 4" PVC pipe sections capped off, and, I bought an old piston shallow well water pump, that once I finish rebuilding, I will put down in the creek and have that running 24/7/365, pumping water up to the pond.
Yes, there is a lot of expense in piping and wiring, but, it will alleviate the power surges, burning up of computers, tv's and fridges, courtesy of the local power co. I currently have most of the house running LED lighting and the computer and tv is battery fed. Just have to use the UPS to keep the batteries charged, but, not for much longer.
Feb I'm off the Florida to buy another Chevy Volt Battery and ship most of it and the vinyl liner down, so, maybe by June, I will be well along in this project.
Thanks for posting your system and hope I didn't hijack you too badly.