How to build a beaver deceiver

So why would you want to build a Beaver Deceiver.  Beavers build dams.  Dams make ponds.   This can result in the flooding of something you don't want flooded or can wash away of a piece of road if they dam up a culvert.  If you go the 'human way' and kill or remove the   beavers, you will have a life time job.   Do the job right and build a beaver deceiver and you have solved the problem  You can now benefit from all the myriad  benefits that beaver ponds create.

So how do you build a simple beaver deceiver when your only aim is to limit the level of  the water in a beaver pond (ie - not to protect a culvert).  You start by getting a piece of that black corrugated pipe of a suitable diameter (big enough to take care of the flow of the stream during the spring melt).  It must be long enough to go from the deepest part of the pond, usually found a couple of meters away from the dam and to extend a little beyond the dam.  To install it, you cut away a little of the top of the beaver dam and lay the pipe in this notch.  Pound a couple of wooden stakes into the top of the dam, one on either side of the pipe and connect them with a board or similar which rests on top of the pipe.  That night the beavers will repair the damage you have done.

Now as shown in the diagram above, you must build some sort of a cage for the inflow end of the pipe.  It should have a mesh lid on it an set so that the top of the cage is below the water level.  In fact it is best if it is below the level that ice or any other floating object will reach.  The wire mesh that is used to reinforce concrete slabs is a good choice and myself, I prefer a round design rather than the rectangular one shown.  Cut off the cross (horizontal) bars from the bottom of the mesh so that the cage can be pounded into the bottom of the pond.

So how about protecting a culvert.  Proceed as above but make sure that the pipe is long enough to extend into the culvert.  Construct a cage over the rest of the culvert.  One more thing and you are finished.  You are in danger of siphoning down the pond and you don't want that.  Beaver pond complexes are a great tourist attraction besides all the good that they do.  Take a hole saw on a battery drill and make a few holes on the top of the pipe where the pipe leaves the dam plus a couple more.  This will break the siphon.

Now get some mesh and tie or weld it into a cylinder.  Use more mesh to put a top on it.  cut away one or two layers of cross pieces on the  bottom of the cylinder so that the cylinder can be pounded in the mud.  Set this cylinder over the input end of the