Yes, it's $40 a year and good at all corps areas as well as other places
Yes, you can purchase an annual pass and I believe it is valid at all corps properties. The pass was $40 per year, good for 12 months from date of purchase, last time I got one, which was 2 years ago. You can check the Corps of Engineers website for up-to-date details. There is a senior discount as well.
Thanks! Your answer is awaiting moderation.