Lets preface this article with the fact that snakes kill very few people in the US each year. We have our share of venomous snakes in the states but we also do a great job of managing them. Now, in a survival situation when you are rushing into woods or into areas of which you are unfamiliar things can get very risky. Suddenly, snakes that are rarely bothered by humans may see an increase in foot traffic. The instances of bites will go up in a survival scenario.
This article talks about how to ID the snake the bites you and what do when the venom is coursing through your veins. Though that venom may not be deadly it could hinder you in such a way that wilderness survival could become an impossibility. This article also offers info on how to shield your property against venomous copperheads.