ARNHA, the American River Natural History Association, is a non-profit, volunteer organization that has operated the Effie Yeaw Nature Center since July 4, 2010, when ARNHA took over financial responsibility for the Center from Sacramento County. ARNHA and the Nature Center rely on funds from memberships, donations and grants. We appreciate your support. To join online, please complete the form below. You can also join by phone by calling the Effie Yeaw Nature Center at 916-489-4918.
There are a number of membership levels, with various benefits, including free admission to Ancil Hoffman Park when visiting the Nature Center, complimentary books from ARNHA, discounts at the bookstore and much more. The benefits for the different membership levels are outlined here.
Join ARNHA by completing the online form below, where you can pay by Paypal or a credit card. Choose your membership level, insert your name in the box, and click on Buy Now to be taken to the secure payment site.
Bringing people to nature and nature to people for over 30 years
