cito

You are totally right. Thank you for clearing me out those doubts.

You are totally right safetly should always come first. I guess I could probably build a fence around it and properly signalize it to avoid this kind of risks.

I think 18 inches per month would be pushing it a little. According to a study I read here http://www.imn.ac.cr/publicaciones/estudios/Reg_climaCR.pdf the region where I live receives around 1800mm(70.8661 inches) per year, that's 8.83 inches per month in 8 months if I'm not mistaken. One thing I didn't quite understand is how you calculated what I could expect in 8 months. I assume that the 8 and the 18 were for the months in the rainy season and average water per month respectively but the 1/4 and the 1/36 left me thinking. The silt trap is a great idea I would definitely take that in consideration. We have gutters and downspouts that empty in just one barrel but this one never gets full. Sounds interesting, I've never heard of buried plastic sponges before.

Hi studiot thank you for your reply I thought of a way of stop going it rancid or putrid by probably setting some sort of lid or cover that hermetacally seals the hole after the rain stops and a filter should also be set to avoid getting rocks and other kind of solids inside it. It is very important that the hole remains sealed, water stagnation could lead in a Dengue outbreak and that could be pretty bad. How I'm going to set this filter and cover up? I have no idea.. I was thinking probably with some PVC materials or something similar. And you are totally right I will be needing a pump to get the water back out. I'm wondering what kind of pump would work in this scenario, considering that the water is full with sediments and dirt, it would probably break pretty fast. You brought also a very good point regarding the cleaning that's something I guess that will have to occur almost at the end of the dry season. Hi Phi for All I do and that works really good, the grass that is directly to the house remains longer green compared to the rest of the property.

Hi everyone! My first post ! I hope I'm here right, here's my question: I live in a very dry and hot region of Costa Rica. It rains around 1800mm(around 70,86 in) per year. My property is around 1800 square meters with an elevation of I would say maybe 10 degrees. The house is on the top of the hill. In the dry season, which takes almost up to 6 months, it rains almost never, causing the grass, plants and trees to dry. In the rainy season it can happen that it rains a lot in one day causing some sort of flooding. So I was wandering if I could harvest the rainwater during the rainy season by making some sort of rectangular hole that covers the whole wide at the end of the property which is around 20m. The wide of the hole I was thinking maybe around 2m but what got me thinking was the depth of the hole. I don't know how much water volume i need to keep my property in the dry season green. I would be very much appreciate if anyone could help me deciphering the depth of the hole or has any suggestions regarding this matter. I know there are a lot of other aspects to take care of if I decide to proceed with the construction of the RWH, but I would just like some sort of raw estimation. Best regards, cito