TUESDAY

Porter Preserve Hike, 10 a.m. in Boothbay

The Boothbay Region Land Trust leads a nature hike every Tuesday from 10 to 11 a.m. Discover preserves throughout the year and meet some fellow hikers. This event is free. No registration is required. Meet at the trailhead parking lot on Kimballtown Road on Barters Island. For more information, email [email protected] or call 633-4818.

WEDNESDAY

Whitewater Regatta through July 10, Old Town

The Penobscot River Whitewater Nationals Regatta, hosted by the Penobscot Nation, returns to Old Town, Bradley, Orono, Veazie and Eddington on the Penobscot River. The regatta features canoe and kayak racing. Four race courses will offer Class I, II and III rapids with plenty of places to see the races from the shore. For more information, call 852-0680. Sign up at paddleguru.com.

ONGOING

Volunteers needed in Scarborough

At the Scarborough Marsh Audubon Center, volunteers can assist with bird monitoring in July and August, help with canoe rentals and lead nature tours. In addition, the nature center needs volunteers for special events such as Snowy Egret Day. No experience is necessary. Training will be provided. Email [email protected] or call 883-5100 to learn more.

Send event listings to [email protected]