Grind

Concerned Citizens of Montauk has warned people to avoid contact with the water in Fort Pond after samples taken at two sites on the pond earlier this week showed a certified harmful blue-green algal bloom, which can post a threat to human and animal health.

Due to heavy rainfall, the Suffolk County Department of Health Services has warned against bathing at Havens Beach in Sag Harbor based on the potential of high bacteria levels that exceed New York standards.

The Bridgehampton Carnival, which raises money for affordable housing in the Town of Southampton, starts Friday — it was supposed to begin on Thursday, but rain seems to have delayed the opening — and runs through Sunday, returning from July 24 through July 27.

In its latest round of water testing results for the week of July 15, Concerned Citizens of Montauk identified East Creek at the south end of Lake Montauk as an area of serious concern. Water sampled there showed the highest levels of the bacteria enterococcus of any of the more than two dozen sites monitored by C.C.O.M.

Tickets have gone on sale for the 15th annual East Hampton Library Authors Night on Aug. 10 starting at 5 p.m. under a tent in Amagansett.

Following reports that the Trump's administration was planning raids across the country to arrest undocumented immigrants, Gov. Andrew M. Cuomo's Office for New Americans offered tips earlier this week on what to do if federal immigration enforcement authorities arrive at people's homes or workplaces or approach them in public.

David M. Alpern, a reporter and senior editor at Newsweek magazine for 40 years, will play excerpts from his long tenure as a "Newsweek on Air" radio interviewer on Thursday at 5:30 p.m. at the Rogers Memorial Library in Southampton.

In solidarity with marches held across the country on Friday to support immigrant families and those seeking asylum at the border, local activists will gather in Sag Harbor on Sunday for the second annual East End Walk for Interdependence.

For those interested in learning what home schooling entails, an informational session called Homeschooling 101 will take place at the East Hampton Library on Sunday from 2 to 4 p.m. 

Teresa Loos, who leads Homeschooling 101 classes at libraries across Long Island, will give an introduction to the rules and regulations, paperwork, samples of learning materials and transcripts, programs, and resources. 

The Clamshell Foundation’s Great Bonac Fireworks Show will be set off over Three Mile Harbor at 9 on Saturday. 

Good spots to watch the show include the head of the harbor, Maidstone Park beach, Sammy’s Beach, Gann Road, or beaches on the west side of the harbor. Boaters head into the harbor early for a good viewing spot. 

The rain date is Sunday.

The earliest morning ferries operated by Shelter Island's North Ferry Company are departing even earlier now in a change that was made with commuters in mind, the general manager of the business said Friday.

The first boat now departs at 5 a.m., followed by a second at 5:30 a.m., according to the new schedule. Previously, the earliest ferry departure was 5:10 a.m. on Mondays during the summer and immediately following holidays, and 5:40 a.m. on weekdays otherwise.