Description: Basin Dry - an excavated area installed on, or adjacent to, tributaries of rivers, streams, lakes or bays to protect against flooding and, in some cases, downstream erosion by storing water for a limited period. You may also have dry basin adjacent to large subdivision areas or industrial areas. Digitized from terrain data at the upper inside edge of the embankment. Collected as tow lines if there is a double set of barriers.Basin Wet - an excavated area used to collect surface runoff and to improve the quality of water by natural processes. In comparison to dry basins (which hold runoff for a limited period of time and then release the stored water at once), retention basins constantly keep standing water, allowing the development of a new habitat. Digitized from terrain data at the upper inside edge of the embankment.
Description: Digitized from the terrain the centerline of the waterway and join cleanly with all other hydrology and/or drain features.Creek - non-navigable body of flowing hydro that is less than 5 feet wide.Creek Intermittent - non-navigable body of flowing hydro that is less than 5 feet wide and flows only in direct response to precipitation or to intermittent discharge of a spring; throughout the year it can be wet or dry.Creek Approximate - non-navigable body of flowing hydro that is less than 5 feet wide and partially hidden from view by dense vegetation.
Description: Culvert <20 feet - pipe drain under 20 feet in length, usually located under roads or driveways. Did not digitized culverts if cement headwalls were present. Digitized center from pipe end to pipe end.Culvert >20 feet - pipe drain over 20 feet in length, usually located under roads or driveways. Did not digitized culverts if cement headwalls were present. Digitized center from pipe end to pipe end.
Description: Line used to connect drainage features where culverts were not present to maintain a consistent hydrological network. Digitized from endpoint of drain to endpoint of drain.
Description: Concrete on the end of a transverse drain or box culvert. Digitized the centerline of headwalls, such as those on ditches or under driveways.
Description: Line used to connect linear hydrological features where no culvert is present to maintain a consistent hydrological network. Digitized from endpoint of feature to endpoint of feature. Hydro connector took precedence over drain connector where hydro joins drains.
Description: Breakwater - barrier built out into a body of water to protect a coast or harbor from the force of waves. Digitized the centerline of the structure.Sea Wall - a form of coastal defense constructed where the sea, and associated coastal processes, impact directly upon the landforms of the coast. Digitized the center of the seawall at the base.Non-Earthen Shore - a structure built of stone, brick, concrete, or other building materials that borders a body of water. Digitized the edge of the non-earthen shore.
Description: Digitized from the terrain both sides of the waterway and joined with all other hydrologic features.River - navigable flowing body of water that is greater than 20 feet wide.River Intermittent - navigable flowing body of water that is greater than 20 feet wide and flows only in direct response to precipitation or to intermittent discharge of a spring; throughout the year it can be wet or dry.River Approximate - navigable flowing body of water that is greater than 20 feet wide wet/dry and whose path is obscured from view by dense vegetation.
Description: Drainage opening beneath a curb and interrupting the gutter. Frequently curb inlets have a manhole directly above them. Digitized center of feature at the curb line.
Description: Digitized from the terrain both sides of the waterway and joined with all other hydrologic features.Stream - non-navigable flowing body of water that is greater than 10 feet wide and less than 20 feet wide.Stream Intermittent - non-navigable flowing body of water that is greater that is greater than 10 feet wide and less than 20 feet wide and flows only in direct response to precipitation or to intermittent discharge of a spring; throughout the year it can be wet or dry.Stream Approximate - non-navigable flowing body of water that is greater than 10 feet wide and less than 20 feet wide wet/dry and whose path is obscured from view by dense vegetation.
Description: Digitized from the terrain the centerline of the waterway and joined with all other hydrology and/or drain features.Stream - non-navigable flowing body of water that is greater than 5 feet wide and less than 10 feet wide.Stream Intermittent - non-navigable flowing body of water that is greater than 5 feet wide and less than 10 feet wide and flows only in direct response to precipitation or to intermittent discharge of a spring; throughout the year it can be wet or dry.Stream Approximate - non-navigable wet/dry stream that is greater than 5 feet wide and less than 10 feet wide wet/dry and whose path is obscured from view by dense vegetation.
Description: Lake - a large inland body of usually fresh water that is 5 acres or larger. Digitized shoreline from terrain and joined with any other hydrology and/or drain features.Pond - an inland body of usually fresh water that is less than 5 acres. Digitized shoreline from terrain and joined with any other hydrology and/or drain features.Reservoir - an enlarged natural or artificial lake, storage pond or impoundment created using a dam or lock to store water. Digitized shoreline from terrain and joined with any other hydrology and/or drain features.Restoration Pond - ponds that are created specifically for habitat restoration, including water treatment. Digitized shoreline from terrain and joined with any other hydrology and/or drain features.Swamp - area of spongy, wet ground, usually harboring vegetation. No distinction is made between a swamp, marsh, or inundated area. Digitized all hydrology features running through swamp.