• Placer County Planning Commission will have a public hearing on the Northstar Mountain Master Plan on June 26 at 10:20am at the North Tahoe Event Center in Kings Beach.

• Brenda Knox, a financial adviser with Waddell & Reed Inc., is putting on a retirement seminar for business owners on June 26 at 6pm, with wine and cheese reception at 5:30pm at Tahoe Mountain Labs, 1048 Ski Run Blvd., South Lake Tahoe. RSVP by June 25 to 775.827.0555 or bknox@wradvisors.com.

• Tahoe Donner’s fourth annual Waterpalooza is a two-day summer celebration of water-themed fun and games, a mega slip-n-slide and more. It all happens at Tahoe Donner’s driving range in Truckee on July 19-20 and Aug. 9-10, 11am-4pm. Cost is $15 for an unlimited wristband or $1 per ticket; food, games and ride ticket prices vary. For more information, call 530.587.9437.

• Tahoe Donner Public Utility District is having a garden party and seminar June 24 from 5-8pm at the Patricia S. Sutton Conservation Garden, 11570 Donner Pass Road, Truckee. For more info, call 530. 582.39391.

• The June 24 Water and the Squaw Valley Village Expansion panel discussion has been canceled.