Tap any pipe to follow the water: the route to its outfall is drawn in orange, and the pipes that feed it stay lit. Each color patch is one outfall's drainage area. Pipes 4 ft and larger get a dark outline. Storm drains carry untreated rainwater straight to streams and ponds. Routes follow the town's downstream pipe links, with pipe geometry used where links are missing; from each outfall the trace continues down the USGS stream network (NHDPlus HR) to the Connecticut River. Where an outfall feeds a small stream USGS doesn't map, the dotted line shows the nearest mapped stream that sits downhill of it, which is where that water most likely goes. Street names are the nearest street to each pipe. Snapshot of Town of Manchester GIS (UtilitySystem/Storm, water bodies, StreetName), pulled September 23, 2026. Streams: USGS NHDPlus HR.