It might be a hassle if you are in a very cold area where it could freeze easily.
13, I live in the tropics. Only ice we get is in the freezer.
Also, sand plant screening is not readily available down here. I will use round smooth solid bar for screening. 2 screens, one ahead of the other, for second attempt at deflecting debris, and, yes, outflow pipes will be to the side of the dam, to avoid most debris and flash flood debris.
PHOTOS
After I post these, y'all can ask questions. Wish I knew how to add arrows and circles onto the photos, before I post them. Lets see if I got something. I tried to outline in Yellow, the specific parts of each photo.
I see there is no spacing between photos, so, we have to study each photo a little.
1st photo shows approx dam height.
2nd shows the dam height with the channel cut through the hill for the outflow pipes.
3rd shows the actual dam location right below the bridge and just a couple feet upstream.
4th and 5th photos show location of the original dam I build for testing my theory, and the arrow? shows the location of the property line- fence in the 2nd photo, so, I am very limited to how much I can back up the water, so it doesn't flood my neighbor upstream.
6th and 7th show that same channel, but, it has caved in a little, so, will be cleaned out and about 8" lower than the photos show.
8th photo shows a place I skinned on a fence post, that is 12' below the channel on the outflow side, and, from there it drops another 14' or so to the last photo that is the turbine site, just before the stream exits my property. This allows the downstream neighbor to have access to the water, after it goes through the turbine, so, he can't complain, when the flow is not heavy enough to spill over the dam. My property is 50meters or 165' wide, approx.
SO< this is what I have to work with. It isn't much, but, at a 24 hour a day flow, I hope to get approx. 60-80 watts per hour, X 24 hours = 1.5 KWH per day ?? Even more on good rainy part of the year. Online calculators show approx. 36 KWH per month at 30GPM. I should be able to get around 45 GPM average during the rainy season, or more, depending on the rains being heavy or light. That would be approx. 56 KWH per month.
It's not much, BUT, I have already had to replace my computer twice, because of the crappy Power Co. system, so, at that cost, I can make this pay. I also have a backup plan, to catch all the runoff of rain from the front of my property down to the pond I dug, and let that run through a generator or, pipe it into the existing system, and drain down the pond, whenever it gets topped off. IT holds approx. 9800 Gallons or so. It measures 4' deep X 12' wide X 45' long.
I figure that would provide approx. 3.5 hours of draining, at 45 GPM. The head would be over 100'. That would add 1KW in a 3 hour session. That pond COULD refill within a week or less, sometimes.
I have photos showing the elevations of the area, and it measures, 50M or 165' wide X 65M or 214' long draining into the pond. I have seen this runoff try to cut ravines into my property, so, I have dug small channels to break up the runoff, into several small diversions. IF I run the runoff into lined channels, it's amazing how much water there is. Here, sometimes you can't see more than 100 yards through the rains.