Looks like there's a major redevelopment project in the area and River Street is closed to traffic, so surveying would be difficult. https://www.dover.nh.gov/government/city-operations/planning/cochecho-waterfront-development/ https://www.dover.nh.gov/services/online-services/news-events/news-2024/river-street-to-be-closed-starting-next-month-through-summer.html