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FAQ: Environmental maps and open data
FAQ: Environmental maps and open data
Here at EGLE, we gather data and create ways to visualize data to make informed decisions in the work that we do.
We strive to innovate the ways we use powerful location-based tools to support EGLE's mission of protecting Michigan's environment and public health.
Every single division in the department uses GIS, which stands for Geographic Information Systems. GIS provides a way to map, analyze, and collect data that has a spatial component (like an address or coordinates).
Using GIS tools, we can visualize a location on a map and then we can layer many different types of locations on the same map. If we combine this location data with information about the location, GIS helps us better understand spatial patterns. GIS allows us to connect "where things are" with "what things are".
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What is open data?
EGLE Open Data provides direct access to GIS datasets that are available to be shared with the public.
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What type of data is available?
Open Data contains spatial layers related to the work done by EGLE. You can download this data in various formats; including Shapefiles (.shp), KMZ, or spreadsheets (.xls, .csv)
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How frequently is the data updated?
This depends on the dataset. Some items are fairly static while others are updated on more frequent cycles. The EGLE data through this site is the most current available. Note: Many of EGLE’s open data layers are updated on a daily, weekly, monthly, or regular basis through live data integrations and these changes are not reflected in the last updated date on this website. Please refer to the individual data layers' metadate, which will have true update frequency detailed.
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The data I want isn't listed. What do I do?
If you can not find something you are looking for, please contact EGLE-Maps@Michigan.gov to see if it is available. Please note that only data that is created or maintained by EGLE is available through our Open Data Portal. There are several other Michigan Open Data Portals (including for MDOT and DNR) that you can check out for this information. You can find their links at the bottom of this page under "Explore Michigan".
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How can I know when new data / maps / apps are published to this page?
Subscribe to our EGLE Maps & Data Updates GovDelivery list to get an email straight to your inbox when we publish new datasets or mapping applications to this page.
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What are the terms of use for the content on this site?
The application and datasets, along with any maps, data, content and other information contained within it and all output from the application (together the “Information”), are provided as a public service, and there are no restrictions on the use, reproduction, or distribution of the Information. It is your responsibility to use the Information for a legally permissible purpose. This Information is provided “AS IS” and on an “AS AVAILABLE” basis. The State of Michigan (“State”) makes no warranties, express or implied, regarding the accuracy, adequacy, reliability, timeliness, or completeness of this Information. THE STATE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS INFORMATION, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NONINFRINGEMENT OF PROPRIETARY RIGHTS. THE STATE WILL NOT BE LIABLE, REGARDLESS OF THE FORM OF ACTION, WHETHER IN CONTRACT, TORT, NEGLIGENCE, STRICT LIABILITY OR BY STATUTE OR OTHERWISE, FOR ANY CLAIM FOR CONSEQUENTIAL, INCIDENTAL, INDIRECT, OR SPECIAL DAMAGES, INCLUDING WITHOUT LIMITATION LOST PROFITS AND LOST BUSINESS OPPORTUNITIES, RELATED TO THE ACCESS OR USE OF THIS INFORMATION. IN NO EVENT WILL THE STATE BE LIABLE FOR ANY AMOUNTS THAT MAY RESULT FROM THE ACCESS OR USE OF THIS INFORMATION, REGARDLESS OF THE FORM OF ACTION, WHETHER IN CONTRACT, TORT, NEGLIGENCE, STRICT LIABILITY, OR BY STATUTE OR OTHERWISE. By accessing or using this Information, you agree that you will not make any claims against the State or any of its departments, divisions, officers, or employees related to your use of the Information. These terms are governed by and interpreted under the laws of the State of Michigan without regard to conflict of laws provisions. Nothing in these terms is meant to impact or replace any existing rights or licenses, such as copyright, trademark, or patent protections, in materials or content that may be located on the site or portal containing the Information.
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Who should I contact if the site isn't working or I'm having trouble?
Contact EGLE-Maps@Michigan.gov and we will respond as quickly as possible.