20260311 04573100 North American Profile of ISO19115 2003 FALSE impaired_2020_draft_lakes 0.000 002 Projected GCS_North_American_1983 Linear Unit: Meter (1.000000) NAD_1983_UTM_Zone_15N <ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/10.4'><WKT>PROJCS[&quot;NAD_1983_UTM_Zone_15N&quot;,GEOGCS[&quot;GCS_North_American_1983&quot;,DATUM[&quot;D_North_American_1983&quot;,SPHEROID[&quot;GRS_1980&quot;,6378137.0,298.257222101]],PRIMEM[&quot;Greenwich&quot;,0.0],UNIT[&quot;Degree&quot;,0.0174532925199433]],PROJECTION[&quot;Transverse_Mercator&quot;],PARAMETER[&quot;False_Easting&quot;,500000.0],PARAMETER[&quot;False_Northing&quot;,0.0],PARAMETER[&quot;Central_Meridian&quot;,-93.0],PARAMETER[&quot;Scale_Factor&quot;,0.9996],PARAMETER[&quot;Latitude_Of_Origin&quot;,0.0],UNIT[&quot;Meter&quot;,1.0],AUTHORITY[&quot;EPSG&quot;,26915]]</WKT><XOrigin>-5120900</XOrigin><YOrigin>-9998100</YOrigin><XYScale>450445547.3910538</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>0.001</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>26915</WKID><LatestWKID>26915</LatestWKID></ProjectedCoordinateSystem> 1.0 20191106 16341800 20191106 16341800 dataset 20191106 Shapefile 0.000 Esri ArcGIS 10.4.1.5686 impaired_2020_draft_lakes 0 EPSG 6.13(3.0.1) impaired_2020_draft_lakes Feature Class 0 FID Internal feature number. Esri Sequential unique whole numbers that are automatically generated. FID OID 4 0 0 Shape Feature geometry. Esri Coordinates defining the features. Shape Geometry 0 0 0 auid auid String 12 0 0 CAT CAT String 4 0 0 CAT_DESC CAT_DESC String 254 0 0 NAME NAME String 100 0 0 REACH_DESC REACH_DESC String 120 0 0 USE_CLASS USE_CLASS String 15 0 0 AREA_ACRES AREA_ACRES Single 13 0 0 AFFECTED_U AFFECTED_U String 254 0 0 LIKE_MEET LIKE_MEET String 254 0 0 NON_POLL NON_POLL String 254 0 0 NAT_BACK NAT_BACK String 254 0 0 ADD_MON ADD_MON String 254 0 0 APPROVED APPROVED String 254 0 0 NEEDS_PLN NEEDS_PLN String 254 0 0 IMP_PARAM IMP_PARAM String 254 0 0 NEW_IMPAIR NEW_IMPAIR String 254 0 0 HUC_8 HUC_8 String 8 0 0 HUC_8_NAME HUC_8_NAME String 50 0 0 HUC_4 HUC_4 String 4 0 0 BASIN BASIN String 40 0 0 COUNTY COUNTY String 30 0 0 TRIBAL_INT TRIBAL_INT String 9 0 0 INDIAN_RES INDIAN_RES String 100 0 0 AMMONIA AMMONIA Single 13 0 0 AMM_DU AMM_DU String 4 0 0 CHLORIDE CHLORIDE Single 13 0 0 CHLOR_DU CHLOR_DU String 4 0 0 CLPYR CLPYR Single 13 0 0 CLPYR_DU CLPYR_DU String 4 0 0 FISHESBIO FISHESBIO Single 13 0 0 FISHES_DU FISHES_DU String 4 0 0 HG_F HG_F Single 13 0 0 HG_F_DU HG_F_DU String 4 0 0 HG_W HG_W Single 13 0 0 HG_W_DU HG_W_DU String 4 0 0 NUTRIENTS NUTRIENTS Single 13 0 0 NUTRI_DU NUTRI_DU String 4 0 0 PCB_F PCB_F Single 13 0 0 PCB_F_DU PCB_F_DU String 4 0 0 PFOS_F PFOS_F Single 13 0 0 PFOS_F_DU PFOS_F_DU String 4 0 0 Shape_Leng Shape_Leng Double 19 0 0 Shape_Area Area of feature in internal units squared. Esri Positive real numbers that are automatically generated. Shape_Area Double 19 0 0 All lakes contained in this shapefile are on the 2020 Impaired Waters list prepared by the Minnesota Pollution Control Agency. AUID: Assessment Unit ID, a waterbody identifer based on the MN DNR lake ID. This AUID constitutes a unique identifer for each lake in the dataset. CAT: EPA Consolidation Assessment and Listing Methodology [CALM] category, which integrates the 305(b) Report with the 303(d) TMDL List. The five categories in CALM are as follows: Category 1: all designated uses are meeting water quality standards Category 2: some uses are meeting water quality standards and there are insufficient data to assess other uses Category 3: there are insufficient data to assess any uses Category 4: at least one use is impaired, but a TMDL is not required. Category 5: at least one use is impaired and a TMDL is required. These become the List of impaired waters. A lake can only be placed into one Category. For example, if a lake is impaired for one pollutant but the other uses are being met, and a TMDL is required, that lake would be placed into Category 5. Furthermore, if the lake is impaired for more than one pollutant, the lake must stay in Category 5 until ALL pollutants have EPA-approved TMDL plans. For 'bookkeeping' purposes Category 4 can be sub-divided, and has the following five sub-categories: 4A: Impaired, but a TMDL study has been approved by EPA 4B: Impaired, but a TMDL study is not required because water quality standards are expected to be met in the near future 4C: Impaired, but a TMDL study is not required because the impairment is not caused by a pollutant 4D: An assessment unit is impaired or threatened but doesn't require a TMDL because the impairment is due to natural conditions with only insignificant anthropogenic influence. To be considered 'insignificant', the elimination of the anthropogenic influence would not lead to the attainment of water quality standards and it would not be included in formal pollution reduction goal-setting activities. A reach-specific water quality standard based on local natural conditions has yet to be determined. Upon determination, the assessment unit will be considered non-impaired for the natural conditions and re-categorized to an appropriate category. 4E: Impaired or threatened but existing data indicates a TMDL is not required because impairment is solely a result of natural sources; a final determination of Category 4D will be made in the next assessment cycle pending confirmation from additional information (i.e. water quality or land use). NAME: Name of the lake associated with the AUID. REACH_DESC: The description of the lake's location. USE_CLASS: Use class per MN Statute 7050.0470. AREA_ACRES: The area, in acres of the lake (assessment unit). AFFECTED_U(SE): Impaired Use(s) Possible Values: AQL: Aquatic Life AQR: Aquatic Recreation AQC: Aquatic Consumption DW: Drinking Water LRV: Limited Resource Value Impairment Fields The following 8 fields contain parameters for which the waterbody is impaired. A complete list of parameter abreviations and their associated pollutants can be found below, in the Year First Listed portion of the metadata document. LIKE_MEET: Parameter(s) not requiring a TMDL because they meet the requirements for CALM Category 4B, above. NON_POLL: Parameter(s) not requiring a TMDL because they meet the requirements for CALM Category 4C, above. NAT_BACK: Parameter(s) not requiring a TMDL because they meet the requirements for CALM Category 4D, above. ADD_MON: Parameter(s) not requiring a TMDL because they meet the requirements for CALM Category 4E, above. APPROVED: The parameter(s) for which TMDL plans have been approved (CALM Category 4A) . NEEDS_PLN: The pollutant(s) for which TMDL plans must be developed and approved. IMP_PARAM(ETERS): Parameters listed in APPROVED and NEEDS_PLN that cause the stream to be impaired. NEW_IMPAIR(MENTS): Parameters proposed to be listed for the first time in the reporting cycle of the dataset. Potential values for impairment parameters in the above fields: Amm-U: Ammonia, unionized As: Arsenic Cl-: Chloride FishesBio: Fishes bioassessments Hg-F: Mercury in fish tissue Hg-W: Mercury in water column Nutrients: Nutrient/eutrophication biological indicators PCB-F: PCB in fish tissue PFOS-F: Perfluorooctane Sulfonate (PFOS) in fish tissue HUC_8: The numeric code of the 8 digit Watershed Boundary Dataset (WBD) polygon that this waterbody is primarily associated with. HUC_8_NAME: The name of the DNR major watershed that this waterbody is primarily associated with. HUC_4: The numeric code of the 4 digit Watershed Boundary Dataset (WBD) polygon that this waterbody is primarily associated with. BASIN: The name of the basin (HUC4) in which this waterbody is located. COUNTY: The name of the county that the majority of this waterbody, or the sampling sites, intersects. TRIBAL_INT: Values include None, Partially, and Wholly. Depicts the intersection relationship between the waterbody and Indian reservations. INDIAN_RES: The name of the tribe who's land the waterbody intersects. AMMONIA: The first reporting cycle that the waterbody was declared impaired for unionized ammonia. AMM_DU: The designated use impacted by the ammonia impairment. CHLORIDE: The first reporting cycle that the waterbody was declared impaired for chloride. CHLOR_DU: The designated use impacted by the chloride impairment. CLPYR: The first reporting cycle that the waterbody was declared impaired for chlorpyrifos. CLPYR_DU: The designated use impacted by the chlorpyrifos impairment. FISHESBIO:The first reporting cycle that the waterbody was declared impaired for fish index of biological integrity, FISHES_DU: The designated use impacted by the fish IBI impairment. HG_F: The first reporting cycle that the waterbody was declared impaired for mercury in fish tissue HG_F_DU: The designated use impacted by the mercury in fish tissue impairment. HG_W: The first reporting cycle that the waterbody was declared impaired for mercury in the water column. HG_W_DU: The designated use impacted by the mercury in water column impairment. NUTRIENTS: The first reporting cycle that the waterbody was declared impaired for nutrient/eutrophication biological indicators. NUTRI_DU: The designated use impacted by the nutrient impairment. PCB_F: The first reporting cycle that the waterbody was declared impaired for polychlorinated biphenyl in fish tissue. PCB_F_DU: The designated use impacted by the PCB in fish tissue impairment. PFOS_F: The first reporting cycle that the waterbody was declared impaired for perfluorooctane sulfonate (PFOS) in Fish Tissue. PFOS_F_DU: The designated use impacted by the PFOS in fish tissue impairment.