You may want to look into joining a mom's group in your area. I am a member of the Mother Connection based out of North Andover (I live in Haverhill) and it is a huge volunteer based organization that has stuff going on all summer long. Most free, some with a nominal fee. I know they have some sprayparks on their calendar this summer. It is a great way to come out and meet moms in your community. Let me know if you want more information. We are in the process of updating our website, but feel free to check it out:
themotherconnection.org
Good luck, welcome to the area and I hope you have a great summer!!
H. Z. (SAHM 5 1/2, 4 1/2, and 23 month old boys)