Geographic Information Systems
A Geographic Information System (GIS) is a computer-based tool for mapping and analyzing features in the environment. GIS staff in the Division of Surface Water (DSW) provide geo-referenced data, geographical analysis, and map products to the Division. GIS staff support a wide range of activities including water quality modeling, watershed planning, and wetlands permitting and mitigation. GIS staff continually seek to improve the effectiveness of the Division through the use of geographic information resources.
Interactive Maps
The following interactive maps are available to view:
Data for Download
The following data are available for download:
| Layer Name |
Layer Description |
Last Update |
Download |
| Integrated Water Quality Monitoring and Assessment Report |
This geodatabase contains a summary of the large river assessment unit and watershed assessment unit results from the 2010 Ohio Integrated Water Quality Monitoring and Assessment Report. |
7/8/2010 |
Geodatabase |
|
Individual NPDES Pemits
|
This layer represents the location of facilities holding individual NPDES permits. |
8/18/2011 |
Shapefile |
| Beneficial Use Designations |
This layer represents the beneficial use designations promulgated in Ohio Administrative Code 3745-1-08 to 3745-1-30. |
3/5/2010 |
Shapefile1 |
| Superior High Quality Waters |
This layer represents the Superior High Quality Waters described in Table 5-4 of OAC 3745-1-05. |
2/2/2010 |
Shapefile1 |
| Outstanding State Waters |
This layer represents the Outstanding State Waters described in Table 5-5 and Table 5-6 of OAC 3745-1-05. |
2/2/2010 |
Shapefile1 |
| Primary Contact Recreation Class "A" Streams |
This layer represents the Primary Contact Recreation Class "A" streams described in Table 7-16 of OAC 3745-1-07. |
1/20/2010 |
Shapefile1 |
| River Mile Maps |
Scanned and georeferenced JPEGs of Ohio EPA's river mile maps. |
9/24/2009 |
Web Page |
1By downloading these data you recognize they are not the official version of the law. Discrepancies may exist between the law and these data.
Other GIS Data
DSW distributes GIS data it develops and maintains. DSW does not distribute GIS data published by other organizations. The following is a list of GIS data frequently requested of, but not distributed by, the Ohio EPA. The list includes links to sites where the data can be obtained, or where more information is available.
Additional GIS data is available from various local, state, and federal entities. A good starting place to find data is the Ohio Metadata Explorer. The Ohio Metadata Explorer is a state-wide index of GIS data, providing product details, contact information, and in some cases download instructions.
A wealth of GIS data is available from the Ohio Department of Natural Resources Geographic Information Management System (GIMS) Program. The GIMS Website is a portal for the download of administrative, geologic, soil, topographic, and many other types of data.