Name: 2024 Impaired Lakes (MPCA)

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Description: This is a set of the impaired lakes as determined by MPCA's surface water quality assessment process, submitted for the 2022 reporting cycle to the US Environmental Protection Agency (EPA). Lakes declared impaired prior to 2022 are also included in this dataset unless they have been delisted or corrected. Note that for the purpose of submitting the impaired waters list to EPA, waterbodies partially or wholly within Indian reservation boundaries are published in separate datasets. The MPCA still considers these waters impaired and has an interest in restoring them. The MPCA respectfully requests that the waters partially or wholly within Indian reservations be symbolized differently on map products so that viewers can differentiate them from waters not intersecting Indian reservations. These lakes are a subset and enhancement of the 1:24,000 scale National Hydrography Dataset (NHD). In cases where the NHD does not include lakes that MPCA has assessed, additional lakes from the MN Department of Natural Resources (DNR) Division of Waters lakes database are added. Since the impaired lakes are a small subset of the NHD and DNR lakes, only that subset is included in the dataset. This dataset includes impaired lakes which have not yet had a TMDL plan approved by the US EPA, those that have a US EPA approved TMDL plan as well as those lakes that do not need a TMDL plan. To be notified of updates to this shapefile, please send an email to kristofor.parson@state.mn.us

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