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Description: Abstract: HYDROGRAPHY_HIGHRES_FLOWLINE_NHD_USGS.SHP is a line shapefile that contains streams, rivers, canals, ditches, artificial paths, coastlines, connectors and pipelines in watersheds in and around Indiana. HYDROGRAPHY_HIGHRES_FLOWLINE_NHD_USGS.SHP is derived from the high-resolution version of the National Hydrography Dataset (NHD), which was made available in 2008. The following is excerpted from metadata provided by the USGS for the high-resolution NHD: "The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water bodies. Reaches are also defined on waterbodies and the approximate shorelines of the Great Lakes, the Atlantic and Pacific Oceans and the Gulf of Mexico. The NHD also incorporates the National Spatial Data Infrastructure framework criteria established by the Federal Geographic Data Committee."
Copyright Text: Citation:
Citation_Information:
Originator: U.S. Geological Survey and the U.S. Environmental Protection Agency (Data author)
Originator: Indiana Geological Survey (Data processor)
Originator: Chris Dintaman (Data processor)
Originator: Denver Harper (Data processor)
Publication_Date: 20081218
Title:
HYDROGRAPHY_HIGHRES_FLOWLINE_NHD_USGS: Streams, Rivers, Canals, Ditches, Artificial Paths, Coastlines, Connectors,
and Pipelines in Watersheds of Indiana (U. S. Geological Survey, 1:24,000, Line Shapefile)
Edition: High-Resolution National Hydrography Dataset, 2008
Geospatial_Data_Presentation_Form: Vector digital data
Publication_Information:
Publication_Place: Indianapolis, Indiana
Publisher: United States Geological Survey
Other_Citation_Details:
HYDROGRAPHY_HIGHRES_FLOWLINE_NHD_USGS.SHP is derived from the feature class named "NHDFlowline" of the High-Resolution National Hydrography
Dataset (2008), created by the United States Geological Survey (USGS) and the United States Environmental Protection Agency (EPA).
Personnel of the USGS provided the Indiana Geological Survey an ESRI file geodatabase named NHD11015_IN.MDB. If users desire complete
geodatabases, with all event tables and other modeling resources available in the full data suite, it can be downloaded by subregion
(HUC04 level data) by either of the two Web links:
ftp://nhdftp.usgs.gov/SubRegions/
http://nhdgeo.usgs.gov/viewer.htm
HYDROGRAPHY_HIGHRES_FLOWLINE_NHD_USGS.SHP is intended to be used with three associated shapefiles named HYDROGRAPHY_HIGHRES_POINT_NHD_USGS.SHP,
HYDROGRAPHY_HIGHRES_WATERBODYLINEAR_NHD_USGS.SHP, and HYDROGRAPHY_HIGHRES_WATERBODYDISCRETE_NHD_USGS.SHP.
Description: The data layer "Best Available Flood Hazard Area" ("Best Available") is the Effective with additional studies that have been reviewed and approved by the Division of Water. While this data has not yet been submitted to FEMA for inclusion in the FIRMs or NFHL (DFIRMs), this data can be used for general planning, construction, and development purposes. However, Best Available cannot be used for flood insurance determinations. The majority of local jurisdictions have options for using best available data; however typically only the FEMA floodplain limits have been adopted into the local floodplain ordinance.The floodplain data shown in the Best Available layer is generally more recent than the official FEMA NHFL data in the Effective layer. However, while the Best Available layer has been approved by the Division of Water, this data not gone through the due process standards FEMA requires for publication in the NFHL.Where a floodway analysis has been completed, an "Approximate Floodway" is included in the Best Available layer. These floodways are based on non-detailed floodplain modeling (i. e. no bridges), but otherwise meet the guidelines for development of floodways in Indiana. These floodways are acceptable for general use in determining jurisdiction for the Indiana Flood Control Act, but should be used with caution. These floodways do not meet the requirements for publication in the FIRMs or NFHL.
Copyright Text: Indiana Department of Natural Resources, Division of Water
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Description: This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the United States and its Territories. These data delineate the areal extent of wetlands and surface waters as defined by Cowardin et al. (1979). The National Wetlands Inventory - Version 2, Surface Waters and Wetlands Inventory was derived by retaining the wetland and deepwater polygons that compose the NWI digital wetlands spatial data layer and reintroducing any linear wetland or surface water features that were orphaned from the original NWI hard copy maps by converting them to narrow polygonal features. Additionally, the data are supplemented with hydrography data, buffered to become polygonal features, as a secondary source for any single-line stream features not mapped by the NWI and to complete segmented connections. Wetland mapping conducted in WA, OR, CA, NV and ID after 2012 and most other projects mapped after 2015 were mapped to include all surface water features and are not derived data. The linear hydrography dataset used to derive Version 2 was the U.S. Geological Survey's National Hydrography Dataset (NHD). Specific information on the NHD version used to derive Version 2 and where Version 2 was mapped can be found in the 'comments' field of the Wetlands_Project_Metadata feature class. Certain wetland habitats are excluded from the National mapping program because of the limitations of aerial imagery as the primary data source used to detect wetlands. These habitats include seagrasses or submerged aquatic vegetation that are found in the intertidal and subtidal zones of estuaries and near shore coastal waters. Some deepwater reef communities (coral or tuberficid worm reefs) have also been excluded from the inventory. These habitats, because of their depth, go undetected by aerial imagery. By policy, the Service also excludes certain types of "farmed wetlands" as may be defined by the Food Security Act or that do not coincide with the Cowardin et al. definition. Contact the Service's Regional Wetland Coordinator for additional information on what types of farmed wetlands are included on wetland maps. This dataset should be used in conjunction with the Wetlands_Project_Metadata layer, which contains project specific wetlands mapping procedures and information on dates, scales and emulsion of imagery used to map the wetlands within specific project boundaries.
Description: This data set represents the extent and approximate location of historic wetland habitats in certain areas of the conterminous United States. The identification of these historic wetlands is limited by the methodology outlined in the associated Historic Wetlands Project Metadata and is not intended to be a comprehensive inventory of all historic wetlands. The U.S. Fish and Wildlife Service (Service) is the principal Federal agency that provides information to the public on the extent and status of the Nation's wetlands and provides stewardship for the wetlands data that comprise the Wetlands Layer of the National Spatial Data Infrastructure. In the formulation of this data layer, historic wetlands are defined as areas where there is evidence that a wetland once existed. This evidence can be from historical map information inventories of past wetland extent or other information collected that relate directly to data on wetland filling, drainage or other modifications. Historic wetlands have been identified using several different techniques depending on the availability and type of information used to locate these areas and user needs. For example, historical maps often provide information about past wetland extent or location and can be useful tools to identify historic wetlands. Historic wetlands have been identified as polygonal data. No linear features have been included. Historic wetland polygons are not classified as wetlands and have no wetland labels or attribution. Since these features no longer exist, boundary delineations are considered approximations based on topography, previously mapped information or indications of historic water levels.
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