Water Management in Permaculture: Digging a Pond
Updated: Apr 12
Three things prompted us to dig a pond at Aanandaa. i) Our neighbour had taken over the village pond, and cut off our access to it. ii) A significant amount of water was still running off our property during the rains which we could harvest and store and iii) We thought it would be a pretty feature, that would provide a home to ducks, fish, birds and geese.
Having avoided getting an earthmover on the property all this while, we finally had to bring a JCB on site. We calculated, that an appropriate size of the pond would be about 100ft x 85 ft x 15 ft. The displaced earth would be used to fill in the ravine, which at the moment had general bushes harbouring snakes. And we would place a concrete overflow pipe for the water to leave the pond. The overflow would go into the village pond after running down a path planted with bananas, bamboos and grasses. Also we would need some sort of a liner for the pond to stabilise its slopes and establish the eco system.
We started with marking out the pond outline with lime markings, and the earthmover started digging and depositing the excavated soil into the ravine.
The trickiest part was placing the overflow pipe. If placed too high, we ran the risk of flooding our entire orchard and the inlet channel. If placed too low, the pond would start overflowing without hitting the 15 feet mark. Using the good old pipe filled with water we matched the levels of the inlet channel to the proposed overflow pipe. Then we dug out a channel into the berm area and placed 3 pipes one after the other in line and sealed them with cement. However, we would not know for sure, till it rained and the pond filled up completely, whether the overflow was at the right height or now.
We continued to dig the rest of the pond, and use the soil to