We have a big beaver problem at our country place. Their idea of landscaping does not fit with our idea of landscaping. Our first option was blowing everything up. It did not work because when we went back to the city for the work week the beavers started theirs. When we came back on Friday it was all fixed. It may have been successsful if we kept it up and never let them build a head of water but we did not have the time or the money for that option.
Even though it did not work it was my favourite option. I had visions of Bill Murray in Caddyshack. Be prepared, without blast mats to direct the blast your going to make a huge, stinking mess. The water once realeased enmass will do alot of damage downstream. If you have neighbours that your blasting actions affect, better let then know what your doing, or better yet, invite them to participate. We learned this the hard way when our blasting actions ruined the farmers water hole he used for his cattle. We helped him for a few weekends after that to make him happy. Haying at 40 years old is not a good weekend spent! Haying is for younger men.
We used a multy-shot charge as the dam was almost 80 feet long and at least 5 feet high. Another big mistake. The wall of water that came out of the holes did more damage than the beaver was doing.
The next option and the best one in my mind is to have someone trap them. This way the land is not destroyed, the beaver pelt gets used and even the meat if the trapper has a dog.
We had beaver free years when the local trapper was given permission to use the land for a trap line. When the local trapper retired and no one was available to take his place we resorted to guns. We dont collect the fur so we use a centrefire rifle in 30-06 or 308. Smaller stuff will work if you have a good opportunity to aim at the right place but the big guns take all the guess work out of the equation. He may swim away with a 22 in him but he wont with a body shot from a 30-06 or 308.
We had one take a full load of 00 Buckshot and still make it to the shore trying to get under the bank. Since using the 308 they all die, right away.
One problem with guns is still time. You have to get them all or the damage continues. Even taking out the local population is a short term solution. The next generation is soon to come waddling down stream or up stream to find your pond and tender trees.
Good luck, be safe and take lots of pictures.
Threemorewishes