County Atlas - Regional Assessment Program

Jan Falteisek, Supervisor, (651) 259-5665

This program creates maps and reports depicting the characteristics and pollution sensitivity of Minnesota's ground-water resources.

 

Description | County Geologic Atlas | Regional Hydrogeologic Assessment | Maps, Reports, and Data | Funding and Local Partnerships | Staff

Purpose

The County Atlas - Regional Assessment Program exists to develop County Geologic Atlases and Regional Hydrogeologic Assessments. It is a joint program with the Minnesota Geological Survey (MGS).

Description

Together with MGS, the County Atlas - Regional Assessment Program prepares map-based reports of counties (County Geologic Atlases) and multicounty regions (Regional Hydrogeologic Assessments) to convey geologic and hydrogeologic information and interpretations to governmental units at all levels, but particularly to local governments. This information and these interpretations contribute to sound planning and management of the state's land and water resources.

DNR Waters, working with MGS, focuses on the following tasks:

  • Utilize the geologic data, maps, and reports prepared by MGS to characterize an area's ground-water hydrology and determine its geologic sensitivity to pollution.
  • Gather information describing the presence, direction of flow, and natural quality of ground water in relation to geology so that ground-water resources can be managed effectively.
  • Produce databases and maps in digital ARC/INFO format so that geographic information system (GIS) tools can be used to update the databases and conduct further analyses.
  • Delineate ground-water resource areas of greater or lesser pollution sensitivity based on time of travel criteria and geologic factors.
  • Conduct training and education programs so that the data and maps are used appropriately and effectively to manage and protect ground-water resources.
  • With MGS, provide the geologic and hydrogeologic data, concepts, and interpretations fundamental to ecosystem-based management.

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County Geologic Atlas.

A County Geologic Atlas is a systematic study of a county's geologic and ground-water resources. Geologic studies include both near-surface deposits and bedrock. Ground-water studies include flow systems, aquifer capacity, ground-water chemistry, and sensitivity to pollution . In some areas sand and gravel deposits, sinkholes, or other features are studied. The information is organized, analyzed, and displayed using GIS technology.

Atlas information is used in planning and environmental protection efforts at all levels of government. Source water protection and well sealing programs are examples of local programs that need geologic and ground-water information. Other typical uses include providing information for permit applications and plans and emergency response to contaminant releases. The information is also used by businesses and the general public.

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Regional Hydrogeologic Assessment

A Regional Hydrogeologic Assessment is similar to an atlas in that both geology and ground water are studied. However, a regional assessment covers a larger area--typically four to nine counties--in less detail. A regional assessment emphasizes near-surface geology, ground-water properties, and sensitivity to pollution.

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Maps, Reports, and Data

Each atlas or assessment report is intended to present practical information in an understandable and accessible format that is useful to both the general user and technical professionals. Reports include maps and interpretive reports of geology; ground water; pollution sensitivity; and, in some cases, special studies. Most projects also provide separate Geographic Information System (GIS) files of the geology and ground water maps. To check if your county has a report available, see mapped areas.

To order published reports:

Minnesota Geological Survey
Map and Publication Sales
2642 University Avenue
St. Paul, MN 55114-1057
tel. (612) 627-4782

To request GIS coverages:

See the mapped areas page for information about the progress of atlases and assessments. Instructions for downloading or ordering GIS data for specific projects are given. Most, but not all, atlases and assessments have GIS data available.

To request Part B atlas or assessment chemistry data:

Additional data may also be available on request. Selected chemistry and isotope data of water samples analyzed for Part B projects is available by downloading project GIS data files. More complete data is available on request by contacting Todd Petersen, DNR Waters, (651)259-5698, todd.petersen@dnr.state.mn.us; or call (651) 259-5700.

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Funding and Local Partnerships

Program funding comes from the DNR Waters budget as appropriated by the legislature. Projects may also be supplemented by other funding sources that support geologic mapping at the MGS. Since 2007, additional funding from the Environment and Natural Resources Trust Fund as recommended by the Legislative-Citizen Commission on Minnesota Resources has supported new atlas projects at the MGS. For a county atlas project, the state contributes from 80% to 85% of the project's total cost. The county supplements the state funding by contributing to the MGS an amount based on the individual county's ability to pay. The maximum contribution from any participating county is $108,000. It is also possible for a county to make arrangements to contribute local services in lieu of some, or all, of the cash payment.

Both atlases and assessments are done to meet local needs for geologic, ground water, and related information. Local committees help define the scope and products of each atlas project. Local groups provide input on project planning and have sponsored field trips and workshops.

Training and Education

Training workshops and field trips are among the efforts to introduce the public to the conditions in the project area. Project staff instruct local staff and the public in how to use the maps and files at workshops that include practical problem-solving exercises.


 

User Assistance

Questions on the content or use of atlas or assessment reports may contact:  

  • Geology and applications (Part A). Contact the MGS at (612) 627-4780.
  • Ground water and pollution sensitivity (Part B). Contact DNR Waters staff listed below.

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DNR Waters Staff

Central Office in St. Paul:

Southeastern Minnesota:




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