The traditional edge sloping may be chosen for safety (child, animal, etc)
There is probably no reason why the slope could not be 2/1 or 3/1 around the egde and then rapidly increase to 1/1... assuming the soil would allow such a slope.
Good point! The reason why slopes need to be 2:1 minimum is that the pond while filling will hold its shape.
The soil in PEI is red clay, very impressive color but its clay. Clay will become loose and settle at the bottom of the pond if the slopes are too steep.
That is basically work done for nothing. A good excavator would know that, the majority would not have clue as they do not know what is going on under the water once they left the job.
A good example is a pond built to be 15 feet deep should be a minimum of 60 feet across. If the pond is 15 feet deep at construction time and its only 40 feet across, the year after it is built, it will be likely be only 10 feet deep.
1:1 slopes work in bedrock of clay-boulder deposit.
2:1 is the rule
in sand 3:1 will be your maximum slope.
Using boulders to build submerged stones walls is a good way to create retaining slopes and fast dropping depth in this type of pond.
Good luck with you perfectly adequate trout pond Howabouttheiris
