Assessment Units 2024 - Great Lakes Shorelines

The 2024 Integrated Report is a biennial publication on the quality of Michigan’s water resources.The Clean Water Act (CWA) requires Michigan to prepare a biennial report on the quality of its water resources as the principal means of conveying water quality protection/monitoring information to the United States Environmental Protection Agency (USEPA) and the United States Congress. The Integrated Report satisfies the listing requirements of Section 303(d) and the reporting requirements of Section 305(b) and 314 of the CWA. The Section 303(d) list includes Michigan water bodies that are not attaining one or more designated use and require the establishment of Total Maximum Daily Loads (TMDLs) to meet and maintain Water Quality Standards. It should be noted that these comprehensive datasets include assessment units throughout the state of Michigan and are not limited to those on the Section 303d list. The 303d status of an assessment unit is indicated in the EPA303dImpairment field, with 0 as not listed and 1 as listed. Further information, including a comprehensive 303(d) list, can be found on EGLE’s Integrated Report webpage. Field Name Description AUID Assessment Unit Identification number includes the corresponding HUC12 of the hydrographic feature, followed by a unique numeric identifier. This field is used to identify assessment units and submit water quality information to EPA. It should be used to reference assessments described in EGLE’s biannual integrated report and EPA’s How’s My Waterway information system Assessment Unit Name Waterbody name derived from authoritative sources or local knowledge. Description A basic location description of the hydrographic features contained in an AUID. HowsMyWaterwayLink Link to how’s my waterway, an EPA data hub that displays additional information about AUIDs EPAIRCategory Environmental Protection Agency Integrated Report Category for an individual AUID. These categories indicate whether a waterbody is supporting designated uses or not. More information can be found here. PartialBodyContactAttainment This field indicates the attainment status of AUIDs in respect to the Partial Body Contact designated use. This refers to the use of a surface water that may cause the human body to come into direct contact with the water, but normally not to the point of complete submergence, such as wading or boating. Water bodies are evaluated for the Total Body Contact (TBC) and Partial Body Contact (PBC) recreation using E. coli bacteria as an indicator for other harmful pathogens. TotalBodyContactAttainment This field indicates the attainment status of AUIDs in respect to the Total Body Contact designated use. This refers to the use of a surface water for swimming or other recreational activity that causes the human body to come into direct contact with the water to the point of complete submergence. Water bodies are evaluated for the Total Body Contact (TBC) and Partial Body Contact (PBC) recreation using E. coli bacteria as an indicator for other harmful pathogens. ColdWaterFisheryAttainment This field indicates the attainment status of AUIDs in respect to the Cold Water Fishery designated use. This use includes the protection of waters where the dominant species under natural conditions would be temperature intolerant indigenous species. Examples include members of the following families: Salmon, Trout, Cod, Whitefish. WarmWaterFisheryAttainment This field indicates the attainment status of AUIDs in respect to the Warm Water Fishery designated use. This use includes the protection of waters where the dominant species under natural conditions would be temperature tolerant indigenous non- salmonid species. Examples include members of the following families: Pearch, Panfish, Bowfin, Bass, Catfish, Pike. OtherIndigenousAquaticLifeAttainment This field indicates the attainment status of AUIDs in respect to the Other Indigenous Aquatic Life designated use. This use includes the protection of waters for macroinvertebrate and aquatic plant communities. Macroinvertebrate examples include mayflies, stoneflies, and caddisflies. FishConsumptionAttainment This field indicates the attainment status of AUIDs in respect to the Fish Consumption designated use. This use includes the protection of aquatic communities and human health related to. consumption of fish and shellfish. In other words, this use means that not only can fish and shellfish thrive in a waterbody, but when caught, can also be safely eaten by humans. PublicWaterSupplyAttainment This field indicates the attainment status of AUIDs in respect to the Public Water Supply designated use. This use includes waters that are the source for drinking water supplies and often includes waters for food processing. Waters for drinking water may require treatment prior to distribution in public water systems. EPA303dImpairment This field indicates whether an AUID is listed as impaired, or not supporting a designated use, in the corresponding integrated report. 1 = Impaired, 0 = not Impaired《2024年综合报告》是一份关于密歇根州水资源质量的双年度出版物。《清洁水法》（Clean Water Act, CWA）要求密歇根州编制水资源质量双年度报告，作为向美国环境保护署（United States Environmental Protection Agency, USEPA）和美国国会传递水质保护/监测信息的核心途径。本综合报告符合《清洁水法》第303(d)条的名录编制要求及第305(b)、314条的报告要求。第303(d)条名录涵盖了未达到一项或多项指定用途、需建立最大日负荷总量（Total Maximum Daily Loads, TMDLs）以达成并维持水质标准的密歇根州水体。需特别说明的是，本综合数据集覆盖密歇根州全境的所有评估单元，并非仅局限于第303(d)条名录收录的水体。评估单元的303(d)状态可通过EPA303dImpairment字段体现，其中0代表未被列入名录，1代表已被列入。更多信息（含完整的第303(d)条名录）可查阅密歇根环境与能源部（EGLE）的综合报告官方网页。 ### 字段说明 1. AUID：评估单元标识号，包含对应水文特征的12位水文单元代码（Hydrologic Unit Code 12, HUC12），后跟唯一数字标识符。该字段用于识别评估单元并向美国环境保护署提交水质信息，可用于引用EGLE双年度综合报告及美国环境保护署《我的水道状况》信息系统中记载的评估结果。 2. Assessment Unit Name：源自权威来源或本地调研的水体名称。 3. Description：对AUID所涵盖水文特征的基本位置描述。 4. HowsMyWaterwayLink：指向《我的水道状况》平台的链接，该平台为美国环境保护署的数据枢纽，可展示有关AUID的更多详细信息。 5. EPAIRCategory：美国环境保护署针对单个AUID的综合报告分类，此类分类用于表明水体是否支持其指定用途，更多相关信息可查阅指定页面。 6. PartialBodyContactAttainment：该字段用于体现评估单元在「部分身体接触」指定用途方面的达标状态。此处指可能导致人体与水体直接接触，但通常不会完全浸没的地表水使用场景，例如涉水或划船。针对「全身接触（Total Body Contact, TBC）」和「部分身体接触（Partial Body Contact, PBC）」两类休闲用水场景，将以大肠杆菌作为其他有害病原体的指示菌开展水质评估。 7. TotalBodyContactAttainment：该字段用于体现评估单元在「全身接触」指定用途方面的达标状态。此处指以游泳或其他会导致人体完全浸没于水体的休闲活动为目的的地表水使用场景。针对「全身接触」和「部分身体接触」两类休闲用水场景，将以大肠杆菌作为其他有害病原体的指示菌开展水质评估。 8. ColdWaterFisheryAttainment：该字段用于体现评估单元在「冷水渔业」指定用途方面的达标状态。该用途旨在保护自然条件下优势物种为耐低温本土物种的水域，示例包括鲑科、鳟科、鳕科、白鲑科等物种所属类群。 9. WarmWaterFisheryAttainment：该字段用于体现评估单元在「暖水渔业」指定用途方面的达标状态。该用途旨在保护自然条件下优势物种为耐高温本土非鲑科物种的水域，示例包括鲈科、鲳科、弓鳍鱼科、鲶科、狗鱼科等物种所属类群。 10. OtherIndigenousAquaticLifeAttainment：该字段用于体现评估单元在「其他本土水生生物」指定用途方面的达标状态。该用途旨在保护大型无脊椎动物和水生植物群落，大型无脊椎动物的示例包括蜉蝣、石蝇、石蛾等。 11. FishConsumptionAttainment：该字段用于体现评估单元在「鱼类消费」指定用途方面的达标状态。该用途旨在保护水生生物群落及与鱼类和贝类消费相关的人体健康。换言之，该用途意味着水体不仅可支撑鱼类和贝类繁衍存续，且其捕获物可安全供人类食用。 12. PublicWaterSupplyAttainment：该字段用于体现评估单元在「公共供水」指定用途方面的达标状态。该用途涵盖作为饮用水供水水源的水域，通常也包括用于食品加工的水域。饮用水源水域在通过公共供水系统配送前通常需进行净化处理。 13. EPA303dImpairment：该字段用于表明评估单元是否在对应综合报告中被列为受损水体（即未达到指定用途要求），其中1代表受损，0代表未受损。