The info above just about covers it so I'll just add a few thoughts. To be honest, if you are desperate to dive or are looking for a cheap place to dive while family members enjoy the park then this is the place. It's certainly not as exciting as Dutch Springs below the water (another local dive spot) but the park is REALLY lovely and it's closer to NYC and it's cheaper than Dutch Springs. Plus, you can bike, hike, and fish if ya like. Great trails! About $7 per car I believe to get into the park. It's a great place to get used to chilly to cold water diving or to use new gear or check out gear before a long trip. Water temps vary drastically with the season and depth. Make sure to check in with the Ranger before you dive to get a permit and a map. C-card and buddy required and so is a dive flag. Watch the silt on the bottom. An underwater platform is located in the dive area for practice. No diving during some months in the winter and the park does have hours that change so be sure to contact the park before you go to be sure they will be open and that diving is allowed. Getting in and out couldn't be easier. Suit up at your car and walk to the water and in ya go. Visibility is surprisingly good.