Boaters using Indian Lake, New york, are being urged to slow down and leave plenty of room around a marked work area as a dive crew continues removing Eurasian watermilfoil, or EWM, by hand through the end of July. While the work may cause a temporary inconvenience for lake users, it is intended to protect the long-term health of a place residents and visitors rely on for recreation, according to NNY360. What's happening? Invasive weed removal i…