River and creek network for the middle section (Washtenaw County) of the Huron River watershed. The network is topologically linked. It combines stream data from five sources, identified in the source field. The primary base link source is the National Hydrography Dataset (NHD). Stream lines were visually inspected using ESRI aerial imagery and 2-foot resolution contours to identify the best link paths. This network includes stream data from all 5 sources for the middle set (Ann Arbor-Ypsilanti area) of the middle section only, with the rest added from NHD.