CLEANUP TIME: The Canoe Cruisers Association sponsors its 13th annual Seneca Creek cleanup on Saturday. Volunteers will clear fallen trees and debris and pick up trash from Clopper Road down to the Potomac. Picnic follows. Leader is Jim Finucane, 301-365-3485.

BALDY: Maryland's bald eagle nesting survey turned up record numbers again this year. Researchers counted 260 nesting pairs, up from the previous record of 232 last year, and at least 368 young nestlings. The top county was Dorchester, as usual, with 58 pairs; Charles County was next with 37 and folks in Frederick County saw the first nesting pair there since 1967. There were only 41 nesting pairs in 1977, when the Natural Resources Department started its surveys. Scientists blamed the pesticide DDT for the decline.

THEY'RE OFF: On Saturday, 59 race boats began the venerable, 475-mile Annapolis-to-Newport Race, the East Coast's premier offshore long-distance sailing race. The top contenders include Baltimore's George Collins in a 70-foot Chessie Racing; Jim Muldoon of the District in a 72-foot Donnybrook; Larry Bulman of Bethesda in an 80-foot Javelin and veteran Northern Virginia racer Al Van Metre in Rima, a chartered 60-footer.

RIVER RATS: The Anacostia Watershed Society is sponsoring a 120-mile sea kayak trip from Washington to the mouth of the Potomac River June 28 to July 3. Participants depart from Bladensburg and finish at Point Lookout. For information, check the Web site www.anacostiaws.org or call 301-699-6204.

SHORT-TIMERS: Boat Bums, an Eastern Shore charity, sponsors the 11th annual Cardboard Boat Race on Saturday at The Strand on the Tred Avon River in Oxford, Md. Registration is at 9 a.m., racing starts at 11 a.m. The entry fee is $10, proceeds benefit the Special Olympics. Call 410-820-4104 for rules.

FLYRODDERS: Saltwater flyfishing expert Joe Bruce will give a talk on "tactics for flyfishing and light tackle on Chesapeake Bay" at the Coastal Conservation Association of Maryland's meeting from 7 to 9 p.m. Thursday at Bethesda Regional Library, 7400 Arlington Rd.

BIRDERS: The Audubon Naturalist Society plans a half-day float trip on the Patuxent River at Jug Bay on Saturday to look for shorebirds, followed by a hike through deciduous forests and river marshes to look for nesting songbirds, marsh and waterbirds. Participants may see least bitterns. Reservations required; call John Bjerke, 301-963-8525.

FOR THE YOUNG: The Kidship Sailing School in Annapolis offers free 20-minute sailboat rides for youngsters today at the Annapolis Waterfront Arts Festival at St. John's College. Hours are 10 a.m. to 6 p.m. Admission to the show is $6 for adults, $3 for kids 12 and under.

OLD-TIMERS: Today is the final day of the 11th annual Antique and Classic Boat Festival at the Chesapeake Bay Maritime Museum in St. Michaels, Md., with more than 100 Chris Craft, Hacker, Gar Wood and other old speedboats on display. The 8th annual Woodenboat Show follows June 25-27, with sail and power boats up to 80 feet in length on display. Call 410-745-2916.