Description: This parcel layer covers 8 counties in Central Ohio, including Delaware, Fayette, Franklin, Madison, Marion, Morrow, Pickaway, and Union within ODOT District 6 boundary. Parcels are acquired from each county auditor's office. The property lines are as of July 2018. Originally, the parcels are by each individual county. Eight counties are combined together for easy use, but the edges of each county are not completely matched. There are sliver and overlapping areas.
Description: The National Flood Hazard Layer (NFHL) data incorporates all Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Management Agency (FEMA), and any Letters of Map Revision (LOMRs) that have been issued against those databases since their publication date. It is updated on a monthly basis. The FIRM Database is the digital, geospatial version of the flood hazard information shown on the published paper FIRMs. The FIRM Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The FIRM Database is derived from Flood Insurance Studies (FISs), previously published FIRMs, flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by FEMA.The NFHL is available as State or US Territory data sets. Each State or Territory data set consists of all FIRM Databases and corresponding LOMRs available on the publication date of the data set. The specification for the horizontal control of FIRM Databases is consistent with those required for mapping at a scale of 1:12,000. This file is georeferenced to the Earth's surface using the Geographic Coordinate System (GCS) and North American Datum of 1983.County and ODOT District information has been added by OES via spatial join and may not be 100% accurate for features that cross county lines.Source: https://msc.fema.gov/portal/advanceSearch
Copyright Text: Federal Emergency Management Agency (FEMA)
Description: The Ohio Source Water Protection Program is intended to protect Ohio's streams, rivers, lakes, reservoirs, and ground waters used for public drinking water from future contamination. To protect drinking water supplies, a protection area is delineated based on the area that supplies water to the well or surface water intake. A Drinking Water Source Water Protection Area for a public water system using ground water is the surface and subsurface area surrounding a public water supply well(s) which will provide water from an aquifer to the well(s) within five years as delineated or endorsed by the agency under Ohio's Wellhead Protection and Source Water Assessment and Protection Programs. The Inner Management Zone is the surface and subsurface area surrounding a public water supply well(s) that will provide water to the well(s) within one year as delineated or endorsed by the agency under the wellhead protection program and the source water assessment and protection program. Several types of source water protection areas have been defined for surface water supplied water systems. The definiton and the method of delineation are based on the type of water body from which the system withdrawls water. The waterbody types are 1) interior lakes, rivers or streams, 2) the Ohio River or 3) Lake Erie. All of these areas are delineated or endorsed by Ohio EPA under Ohio's Source Water Assessment and Protection Program. For systems with intakes on interior lakes, rivers and streams, three types of areas are defined: 1) the Drinking Water Source Protection Area (DWSPA)- the drainage area upstream of the point where a public water system withdraws water from a surface source; 2) the Corridor Managment Zone (CMZ) - the surface and subsurface area where the potential for drinking water contamination warrants delineation, inventory, and management because of its proximity to a public water system intake; and 3) the Emergency Management Zone - the surface and subsurface area in the immediate vicinity of a public water system intake. For systems with intakes on Lake Erie, a Critical Area Zone (CAZ) is delineated. The size of the CAZ is based upon the sensitivity of the intake to contamination which is determined by its depth and distance from shore. The shape and extent of this area may be modified to take into account site specific conditions. Contaminants within this zone can quickly impact water quality at the intake. A Potential Influence Zone (PIZ) may also be delineated. The PIZ is the area along the lake shore and any contributing tributaries up to the point of known contaminant sources and the length of shoreline where pollutants may become a threat to the intake. Public water systems with intakes on the Ohio River have three zones defined. Zone 1, or the Zone of Critical Concern, extends one quarter mile below a water intake to 25 miles upstream in the Ohio River. Zone 2, the Zone of High Concern extends one quarter mile below a surface water intake, upstream, to one quarter mile below the next Ohio River intake. Major tributaries are incorporated within a 25 mile distance upstream from the intake. Zone 3 is the Source Water Area, or the entire portion of the Ohio River Basin upstream from the surface water intake.Source: http://data-oepa.opendata.arcgis.com/
Copyright Text: Ohio EPA Division of Drinking and Groundwaters
Description: This data set is a digital soil survey and generally is the most detailed level of soil geographic data developed by the National Cooperative Soil Survey. The information was prepared by digitizing maps, by compiling information onto a planimetric correct base and digitizing, or by revising digitized maps using remotely sensed and other information. This data set consists of georeferenced digital map data and computerized attribute data. The map data are in a soil survey area extent format and include a detailed, field verified inventory of soils and miscellaneous areas that normally occur in a repeatable pattern on the landscape and that can be cartographically shown at the scale mapped. A special soil features layer (point and line features) is optional. This layer displays the location of features too small to delineate at the mapping scale, but they are large enough and contrasting enough to significantly influence use and management. The soil map units are linked to attributes in the National Soil Information System relational database, which gives the proportionate extent of the component soils and their properties. Last update 08/2014.
Copyright Text: The U.S. Department of Agriculture, Natural Resources Conservation Service. This data set is not designed for use as a primary regulatory tool in permitting or citing decisions, but may be used as a reference source. This is public information and may be interpreted by organizations, agencies, units of government, or others based on needs; however, they are responsible for the appropriate application. Federal, State, or local regulatory bodies are not to reassign to the Natural Resources Conservation Service any authority for the decisions that they make. The Natural Resources Conservation Service will not perform any evaluations of these maps for purposes related solely to State or local regulatory programs. Photographic or digital enlargement of these maps to scales greater than at which they were originally mapped can cause misinterpretation of the data. If enlarged, maps do not show the small areas of contrasting soils that could have been shown at a larger scale. The depicted soil boundaries, interpretations, and analysis derived from them do not eliminate the need for onsite sampling, testing, and detailed study of specific sites for intensive uses. Thus, these data and their interpretations are intended for planning purposes only. Digital data files are periodically updated. Files are dated, and users are responsible for obtaining the latest version of the data. 8/20/14
Description: The Watershed Boundary Dataset (WBD) is a comprehensive aggregated collection of hydrologic unit data consistent with the national criteria for delineation and resolution. It defines the areal extent of surface water drainage to a point except in coastal or lake front areas where there could be multiple outlets as stated by the "Federal Standards and Procedures for the National Watershed Boundary Dataset (WBD)" “Standard” (http://pubs.usgs.gov/tm/11/a3/). Watershed boundaries are determined solely upon science-based hydrologic principles, not favoring any administrative boundaries or special projects, nor particular program or agency. This dataset represents the hydrologic unit boundaries to the 12-digit (6th level) for the entire United States. Some areas may also include additional subdivisions representing the 14- and 16-digit hydrologic unit (HU). At a minimum, the HUs are delineated at 1:24,000-scale in the conterminous United States, 1:25,000-scale in Hawaii, Pacific basin and the Caribbean, and 1:63,360-scale in Alaska, meeting the National Map Accuracy Standards (NMAS). Higher resolution boundaries are being developed where partners and data exist and will be incorporated back into the WBD. WBD data are delivered as a dataset of polygons and corresponding lines that define the boundary of the polygon. WBD polygon attributes include hydrologic unit codes (HUC), size (in the form of acres and square kilometers), name, downstream hydrologic unit code, type of watershed, non-contributing areas, and flow modifications. The HUC describes where the unit is in the country and the level of the unit. WBD line attributes contain the highest level of hydrologic unit for each boundary, line source information and flow modifications. Additional information: https://www.nrcs.usda.gov/wps/portal/nrcs/detail/oh/water/watersheds/?cid=nrcs144p2_029588
Copyright Text: Funding for the Watershed Boundary Dataset (WBD) was provided by the USDA-NRCS, USGS and EPA along with other federal, state and local agencies. Representatives from many agencies contributed a substantial amount of time and salary towards quality review and updating of the dataset in order to meet the WBD Standards. Acknowledgment of the originating agencies would be appreciated in products derived from these data.
Description: This data set represents the extent, status, and location of National Wetland Inventory wetland mapping projects for NWI Version 2, Surface Waters and Wetlands. Each project polygon contains information on the type and date of imagery used to map the wetlands and a link to a document about specific mapping techniques and habitat information for that project.County and ODOT District information has been added by OES via spatial join and may not be 100% accurate for features that cross county lines.Source: https://www.fws.gov/wetlands/data/State-Downloads.html
Copyright Text: U.S. Fish and Wildlife Service (USFWS) and the National Wetlands Inventory (NWI)