Nitrate Total Maximum Daily Loads (TMDLs) Watersheds
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The watersheds indicate approximate areas used for determination of the waste load (point sources) and load allocation (nonpoint sources) of each TMDL. Data are compiled by the State of Michigan Department of Environment, Great Lakes, and Energy (EGLE), Water Resources Division. At a minimum, this dataset is updated every two years after the approval of Michigan's Integrated Report (303d List). Features include a hyperlink to the applicable TMDL document, and the year of USEPA approval.Please direct questions to Molly Rippke,RippkeM@Michigan.gov. Version: November, 2020. Field Name Field Description TotalMaxiumumDailyLoadName Official name of Total Maximum Daily Load (TMDL) TMDLCategory Category of parameter being addressed by the TMDL Year Year the TMDL was issued and approved by EPA TMDLDocument Official TMDL Documentation TMDLID Official TMDL Identifier ImpairedDesignatedUse1 Primary designated use that is impaired and being addressed by the TMDL ImpairedDesignatedUse2 Additional designated use that is impaired and being addressed by the TMDL CauseOfImpairment1 Parameter causing the primary designated use impairment CauseOfImpairment2 Parameter causing the additional designated use impairment EPAID Official EPA TMDL Identifier UniqueID Unique identifier used to differentiate TMDLs within the same category Status EPA approval status of TMDL
流域范围用于表征各总最大日负荷（Total Maximum Daily Load, TMDL）的废物负荷（点源）与负荷分配（非点源）的估算区域。 本数据集由密歇根州环境、大湖与能源部（EGLE）水资源处汇编。 密歇根州综合报告（303(d)清单）获批后，本数据集至少每两年更新一次。 数据集包含指向对应TMDL文档的超链接，以及美国环境保护署（United States Environmental Protection Agency, USEPA）的批准年份。如有疑问，请联系Molly Rippke，邮箱：RippkeM@Michigan.gov。版本：2020年11月。 字段名 字段描述 TotalMaxiumumDailyLoadName 总最大日负荷名称：TMDL的官方名称 TMDLCategory TMDL类别：TMDL所针对的参数类别 Year 年份：TMDL发布并获美国环境保护署（United States Environmental Protection Agency, EPA）批准的年份 TMDLDocument TMDL文档：TMDL官方文档 TMDLID TMDL标识符：TMDL官方标识符 ImpairedDesignatedUse1 受损指定用途1：TMDL所针对的受损一级指定用途 ImpairedDesignatedUse2 受损指定用途2：TMDL所针对的其他受损指定用途 CauseOfImpairment1 受损原因1：导致一级指定用途受损的参数 CauseOfImpairment2 受损原因2：导致其他指定用途受损的参数 EPAID EPA标识符：EPA官方TMDL标识符 UniqueID 唯一标识符：用于区分同一类别下不同TMDL的唯一标识 Status 状态：TMDL的EPA批准状态
