Download .zipThe Ohio Wetlands Inventory is based on analysis of satellite data by Bruce R. Motsch and Gary M. Schaal and is intended solely as an indicator of wetland sites for which field review should be conducted. The satellite data reflect conditions during the specific year and season the data was acquired and all wetlands may not be indicated. Statistics generated from the inventory are intended solely as an approximation.

The Ohio Wetland Inventory for Ashtabula County was produced from May 1987 Landsat Thematic mapper data (cell size 30 meters by 30 meters) using ERDAS Image processing software. The raster data has been converted to ARC/INFO format and exported to an interchange file.

The data was originally georeferenced to UTM zone 17 coordinates NAD 27 and is also available in this coordinate system in ERDAS Imagine format.

The class of woods on hydric soils, wet meadow and farmed wetland fall on hydric soils when digital soils data is available for the county.

Original coverage data was converted from the .e00 file to a more standard ESRI shapefile(s) in November 2014.Contact Information:GIS Support, ODNR GIS ServicesOhio Department of Natural ResourcesReal Estate & Land ManagementReal Estate and Lands Management2045 Morse Rd, Bldg I-2Columbus, OH, 43229Telephone: 614-265-6462Email: gis.support@dnr.ohio.gov

Download .zipThis ground water resources map shows an estimate of sustainable yield available from aquifers in the area. Individual well yields may vary.

This coverage was digitized in vector format from a county map, at a scale of 1:63360.

Original coverage data was converted from the .e00 file to a more standard ESRI shapefile(s) in November 2014.Contact Information:GIS Support, ODNR GIS ServicesOhio Department of Natural ResourcesReal Estate & Land ManagementReal Estate and Lands Management2045 Morse Rd, Bldg I-2Columbus, OH, 43229Telephone: 614-265-6462Email: gis.support@dnr.ohio.gov

Geospatial data about Ashtabula County, Ohio Addresses. Export to CAD, GIS, PDF, CSV and access via API.

Download .zipMaps and data associated with oil-and-gas wells represent one of the largest datasets at the Ohio Department of Natural Resources. This GIS data layer contains all the locatable oil-and-gas wells in Ohio. The feature is derived from coordinates obtained from the Division of Oil and Gas Resources Management (DOGRM) oil and gas well database – Risk Based Data Management System (RBDMS). The RBDMS database has a long history and is a comprehensive collection of well data from historic pre-1980 paper well records (digitized by the Division of Geological Survey (DGS)) to post-1980 DOGRM database solutions.Since 1860, it is estimated that more than 267,000 oil-and-gas wells have been drilled in Ohio. The compressed file also includes a feature used to connect the surface location to the bottom location of a well that has been drilled directionally or horizontally. This feature is NOT the actual wellbore path, it is simply a graphical representation indicating the relationship between the two well points.Contact Information:GIS Support, ODNR GIS ServicesOhio Department of Natural ResourcesDivision of Oil & Gas ResourcesOil and Gas Resources Management2045 Morse Road Bldg F-2Columbus, OH, 43229-6693Telephone: 614-265-6462Email: gis.support@dnr.ohio.gov

Download .zipA soil mapping unit designates a specific type of soil which has unique characteristics including texture, slope, and erosion class.

This coverage was developed from a modernization of the original soil survey on a mylar USGS quarter quadrangle based overlay at 1:12000 in UTM NAD 83. This modernization was completed by soil scientists with the USDA, Natural Resources Conservation Service in cooperation with the ODNR, Division of Soil and Water Conservation. The soils were scanned by a commercial data conversion firm at a density of 500 dots per inch and then converted to ARC Grid format. The GRID files for each quadrangle were then converted to ARC/INFO coverages and editted through various software routines and manual heads-up digitizing. Quarter quadrangle coverages were converted into UTM NAD 83, edgematched, and then joined into a final county coverage for use by the USDA, Natural Resources Conservation Service for compliance with SSURGO standards. The coverage was reprojected to State Plane Coordinates, NAD 27 for consistency with other county coverages maintained by the state. SSURGO review has not yet begun on this coverage. During the review process some changes in soil names and/or boundaries may be made.

Original coverage data was converted from the .e00 file to a more standard ESRI shapefile(s) in November 2014.Contact Information:GIS Support, ODNR GIS ServicesOhio Department of Natural ResourcesReal Estate & Land ManagementReal Estate and Lands Management2045 Morse Rd, Bldg I-2Columbus, OH, 43229Telephone: 614-265-6462Email: gis.support@dnr.ohio.gov

Download .zipGroundwater Vulnerability is an evaluatation of an area’s vulnerability to groundwater contamination based upon its hydrogeologic, topographic, and soil media characteristics.Contact Information:Geological Survey, Customer ServiceOhio Department of Natural ResourcesDivision of Geological SurveyGeologic Records2045 Morse RoadColumbus, OH, 43229-6693Telephone: 614-265-6576Email: geo.survey@dnr.ohio.gov

Download .zipThis map combines slope, glacial geology, ground water availability, depth to bedrock, bedrock geology, and flooding potential to determine the limitations for sanitary landfill development. Categories are arranged in order of severity, with slope as the least limiting factor and flooding potential as the most limiting factor. This map is designed for general planning purpose and is not meant to take the place of detailed site investigations.

Original coverage data was converted from the .e00 file to a more standard ESRI shapefile(s) in November 2014.Contact Information:GIS Support, ODNR GIS ServicesOhio Department of Natural ResourcesReal Estate & Land ManagementReal Estate and Lands Management2045 Morse Rd, Bldg I-2Columbus, OH, 43229Telephone: 614-265-6462Email: gis.support@dnr.ohio.gov

Download .zipA potentiometric surface map is a contour map that represents the top of the ground water surface in an aquifer. The contour lines illustrate the potentiometric surface much like the contour lines of a topographic map represent a visual model of the ground surface. A potentiometric surface map is very similar to a water table map in that both show the horizontal direction and gradient of ground water flow.Contact Information:GIS Support, ODNR GIS ServicesOhio Department of Natural ResourcesDivision of Geological Survey2045 Morse Rd, Bldg I-2Columbus, OH, 43229Telephone: 614-265-6693Email: gis.support@dnr.ohio.gov

Download .zipThis coverage land represents an interpretation of land use and land cover types done from aerial photography by the ODNR GIS Services, Division of Real Estate and Land Management. For an explanation of categories see Ohio Land Use/ Cover Classifications System, Misc. Report 17 available upon request, or at http://apps.ohiodnr.gov/geodata/documents/Ohio_LULC_Misc_Report17.pdf .

Land use/ land cover was simultaneously interpreted and digitized into an ArcView shapefile for each 7.5 minute quadrangle in the county using the Digital Transfer Scope Extension. Background reference themes of roads, railroads hydrography and political boundaries from the USGS 1:24000 DLG's were used as an aid to interpretation. Photos were registered to the background layers as closely as possible. The background themes were then warped to fit the photos. A minimum of four control points were used in each photo. After interpretation the lines were unwarped back to the proper coordinates. Using several Arc/Info programs and software routines the shapefiles were converted into Arc/Info coverages, edgematched, and joined into a county coverage. A more detailed description ot the entire process is available upon request.

Original coverage data was converted from the .e00 file to a more standard ESRI shapefile(s) in November 2014.Contact Information:GIS Support, ODNR GIS ServicesOhio Department of Natural ResourcesReal Estate & Land ManagementReal Estate and Lands Management2045 Morse Rd, Bldg I-2Columbus, OH, 43229Telephone: 614-265-6462Email: gis.support@dnr.ohio.gov

Download .zipThis coverage was extracted from the 1994 statewide land cover inventory of Ohio.

The land cover inventory for the State of Ohio was produced by the digital image processing of Landsat Thematic Mapper Data. The Thematic Mapper is a multi-spectral scanner that collects electromagnetic radiation reflected from the earth's surface in the visible, near infrared and mid-infrared wavelength bands. The resolution of the Thematic Mapper data is a 30 meter by 30 meter cell. The computer analysis of the data isolates unique spectral classes that relate to land cover characteristics.

The land cover inventory was produced from Thematic Mapper data acquired in September and October 1994. The data was classified into the general land cover categories of urban, agriculture/open urban areas, shrub/scrub, wooded, open water, non-forested wetlands and barren.

The land cover information reflects the conditions of the satellite data during the specific year and season the data was acquired. The Thematic Mapper data was processed using ERDAS image processing software. The data was originally created in raster format and georeferenced to Universal Transverse Mercator (UTM) zone 17 coordinates NAD27. The data can be combined with other georeferenced digital data layers.

The data is also available in its original ERDAS image format.

Original coverage data was converted from the .e00 file to a more standard ESRI shapefile(s) in November 2014.Contact Information:GIS Support, ODNR GIS ServicesOhio Department of Natural ResourcesReal Estate & Land ManagementReal Estate and Lands Management2045 Morse Rd, Bldg I-2Columbus, OH, 43229Telephone: 614-265-6462Email: gis.support@dnr.ohio.gov

The U.S Fish and Wildlife Services (USFWS) Lower Great Lakes Fish and Wildlife Conservation Office (LGLFWCO) Aquatic Invasive Species (AIS) program conducts Eurasian Ruffe (Gymnocephalus cernua) bottom trawl surveys annually. Dedicated Ruffe surveillance occurs across harbors and ports of the Great Lakes with the intent of detecting Ruffe range expansions. The LGLFWCO began conducting Ruffe surveys in 1994 and continue this effort to present day, excluding 2020 due to COVID-19 restrictions which prevented sampling for that year. LGLFWCO Ruffe sampling focuses on harbors and ports of the lower Great Lakes (Erie and Ontario) and has included the following locations: Toledo (Ohio), Sandusky (Ohio), Cleveland (Ohio), Ashtabula (Ohio), Conneaut (Ohio), Erie (Pennsylvania), Buffalo (New York), and Rochester (New York).All LGLFWCO Ruffe sampling is conducted using bottom trawls (4.9 m headrope) and intends to sample the benthic fish community. Sampling locations are visited biannually (spring and fall) and trawls occur at historical trawling transects denoted for each port or harbor. Although each location is sampled biannually, there is some variability in the seasonality of surveys - this can be made apparent in the water temperatures collected during sampling events. Although the primary objective of these surveys is to search for Ruffe, many native and non-native (i.e. Round Goby) species are collected. Similar to our Early Detection and Monitoring (EDM) program, all fish collected during the trawls are counted and identified to species in the field using taxonomic keys. If an identification cannot be made in the field, the specimen or some of its tissue is preserved using 95% ethanol (EtOH) and identifications are made in the laboratory either taxonomically or genetically (recent survey years; Northeast Fishery Center). A subset of individuals from each species are measured (total length; mm) in the field. Any significant AIS detections are reported to partners following an internal communications protocol. The information within this dataset is geospatial in nature and documents Ruffe trawling sampling events. Both abiotic and biotic data is collected for each individual trawling event. It is possible that over time, variations in the trawling protocol (duration, speed, warp length, etc.) have been modified which could influence the effectiveness of the trawl. Also, although infrequent, some fish identifications within this data set may be inaccurate and without photographs or preservation of the individual to confirm identification, those records will remain within this data set unless otherwise detected and removed.