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This data layer contains streams in Newton. Streams are generally narrow enough bodies of water to be represented as single lines at most mapping scales. Most streams in Newton run through underground drainage pipes for much of their length. The underground segments mostly have corresponding drainage pipes in the Storm Drainage layer. The Charles River is wide enough to be represented as a polygon feature at most common mapping scales so it is part of the Surface Water layer.
Creation, History and Update Process:
Boston Edison provided the original version of this data layer. The streams were updated to include missing stream features from city’s conservation planner. LiDAR data and generated contours were used to more accurately map these in 2018. At this time culverts were also added using a combination of data from consultants, LiDAR and aerial photography to get the entry and exit points and drain easements to approximate the underground flow.
Streams that apparent on the most current aerial photos are updated as needed. Also changes between perennial and intermittent streams are sometimes suggested by the conservation planner.
Features and Attributes:
Lines have the following attributes: