National Lakes Assessment Project (NLAP)
In 2007, the U.S. Environmental Protection Agency led a survey of the nation's lakes in conjunction with the states. A total of 909 lakes are included in this survey.
Minnesota's NLAP effort was headed by the MPCA and Minnesota Department of Natural Resources. Minnesota initially drew 41 lakes as a part of this statistically based national survey effort, and added nine lakes to allow for state-based assessment. Communication with various groups around the state led to these enhancements that were added to the base-level program:
- collaboration with U.S. Forest Service in sampling the Boundary Waters Canoe Area Wilderness;
- near-shore assessments that included macrophyte identification and determination of maximum rooting depth of plants;
- sampling in support of lake IBI development;
- measurement of mercury in the water;
- measurement of water pesticides in conjunction with an ongoing Minnesota Department of Agriculture Program;
- measurement of sediment contaminants to provide improved baseline and spatial data; and
- a region-wide assessment of the Prairie Pothole Region conducted in conjunction with North Dakota, South Dakota, Montana and Iowa.
For additional information about this project, please contact Steve Heiskary at 651-757-2419, or toll-free at 800-657-3864.
This report series will examine statewide patterns in various chemical, physical and biological parameters based on data collected during the NLAP survey.
- Microcystin Concentrations in Minnesota Lakes
- Aquatic Macrophytes in Minnesota Lakes
- Water Mercury Concentrations in Minnesota Lakes
- Fish-based Index of Biotic Integrity (IBI) for Minnesota Lakes
- Pesticides in Minnesota Lakes (Minn. Dept. of Agriculture)
- An overview of water chemistry in Minnesota lakes
These lake information sheets contain a brief description of each lake sampled for the Environmental Protection Agency National Lake Assessment Program: general information about lake area and depth, watershed area and land use composition, lake dissolved oxygen and temperature profiles, and water quality data from the survey. The typical range of water quality values for each ecoregion is provided as a basis for comparison. Data tables will be periodically updated as more data becomes available.
|Blue Earth||Eagle (North)|
|Crow Wing||Crow Wing|
|Itasca||Long (Main Bay)|
|Le Sueur||Upper Sakatah|
|Otter Tail||West Leaf|
|Otter Tail||Maine (Round)|