It would no doubt slow it down, but if you created an electrical charge inside of the water it would make a great natural defense until you could shoot it down.
Not certain how one would electrify a river...
Do what we were taught as kids not to do... put things in the river that will freeze a zombie in its tracks. A good stun gun shot to the river or an electrical current that is put in a river will suffice. Otherwise this is a poor defense option as zombies don't need to breathe and can travel underwater, potentially just wandering up onto the shore of your base, (according to Max Brooks.) Also according to Max Brooks, it takes twice the voltage to stun a zombie than it does a human, so any of our ideas would likely prove crappy. If you have any other suggestions, let me know.
it wouldn't work trust me i have 2 certifications in electronics and let me tell you electrify a small pool of water and a huge river which is there fir connected to all the water on earth are two completely different things. now first of electricity is always trying to find the easiest path to ground. now the higher the resistance of a material, how hard it is for a charge to push its way through it, the more energy it takes. now water has a fairly low resistance but the more of something there is the higher the resistance and thousands of gallons that would be in any certain point on that river its basically gonna act like an insulation. power lines fall in rivers and such all the time but unless your very close to it its not going to do any damage. and even if you could get enough energy to electrify it and were talking more then anyone could ever get their hands on in a grid down situation, the water would lead right to ground. where the electricity wants to go anyway. the only way it would flow through you is if you some how gave it an easier path to ground. think about a squirl running on a high tension power line. now if you or me on the ground were to touch that line we would die right away it would literally cook us. but why doesn't the squirl get fried. because its not giving the electricity a path to ground.
as for the river as a defense no one seams to have mentioned current. if its a fast moving river then a zombie with its limited motor function would be easily swept away. and even if it could walk along to bottom the bottoms or rivers and lakes and such are muddy, a zombie could easily get stuck. so i think it makes a pretty good barrier, not an impenetrable one mind you but it will give you fair to good protection. as long as you don't try to electrify it. .
Yes the swept away thing is sort of the point. I am thinking of putting the wife in a bathing suit on the opposite bank in the hopes that the zombies will attempt to cross. Let the people down stream worry about any that manage to make it out.
yes well that's the problem there is not guaranty it will be swept significantly don stream. of course a zombie cant maneuver its self to find shore, nor does it have the mental faculty to conceive of such an idea. but it may still get lucky and wind up only a little away from you. and if it can remember which way you are, and its not sidetrack by other food sources it will work tirelessly to reach you again. it short its a good barrier but be careful of zombies that might wash up on your side.
Certainly I have no suggestions, the idea of electrifying the river was yours. My thought was rather that a briskly moving water course over head deep is very difficult to cross without being swept down stream. Military teams usually secure a belay line across such an obstacle. link on to the line with a field expedient rappel seat with a snap link if they have the time, and pull themselves across hand to hand. I don't see zombies doing that. I don't know where Mr. Brooks lives but I live on White river in Indiana, and I promise you anything trying to walk across it unsecured is not going to be a concern to me where ever it ends up. I am only hoping zombies are sufficiently oblivious that they will make the attempt.
Good question. I think unless it actually saw food on the other side, it would see it as a barrier and move on to whatever path had the least resistance.
Well then we would have to assume they are able to make choices and act to preserve themselves, or at least evaluate obvious risks, rather than to proceed blindly forward.