Data Distribution
We would like to announce that the Mississippi One-Call System, Inc. (Mississippi 811) map data is now available through MARIS (What is MARIS). The data will be available to organizations that will be using the data in house without intent to distribute or sell. Data distribution will be based on a signed agreement. The agreement can be downloaded from the MARIS web site. The signed agreement should be returned to Mr. Steve Walker at swalker@ihl.state.ms.us or faxed to (601) 432-6893. Once an organization is approved to use the Mississippi 811 data, it will be distributed through the MARIS WEB or FTP sites.
Available Layers:
- Airports – Airport property boundaries
- Places – City limits boundaries
- Highways – County and city highway centerlines
- Institutions – Points of Interest
- Parks – Park property boundaries
- Railroads – Railroad centerlines
- Streets – County roads and city street centerlines
Data Accuracy:
Highways, Institutions and Streets have been collected using a combination of 1-meter aerial imagery and 1 to 5 meter GPS units. All other layers are collected using a combination of 1-meter aerial imagery and paper maps.
Data Format:
The data will be available for the entire state of Mississippi by county in ESRI shape file format in WGS84 Lat/Long projection. Metadata is contained within the attribute table for each layer. Each county will be updated at least once yearly. High growth counties will be updated twice yearly. Updates will be sent to MARIS as they are completed.
Feedback:
We would greatly appreciate any feedback pertaining to the Mississippi 811 data and would like to have a copy of any changes or corrections made to the data. This will help us keep our data as up to date as possible. We would also like to hear from any organizations that might be collecting GPS point addresses. This is something our call center could use to pin point an excavation site more accurately. We know that some data is restricted such as name and phone numbers, we only need the address number and geometry for each address. Feedback, data or questions can be sent to Amanda Russell (Fax 601-981-9027 or Phone 601-368-1150).
