Water Body Status Classification Lower Trent and Erewash

Water body status classification data indicates the quality or status of water bodies across a range of different parameters known as quality elements. This dataset includes the classification history of all water bodies in the Lower Trent and Erewash catchment. Data may be flagged as 'Cycle 1' if the classification uses the rules initiated in 2009 when the first cycle of river basin planning began. These data end in 2015. Or the data may be flagged as 'Cycle 2' if the classification uses the latest rules used in the updated river basin plans. These data begin in 2013 and will end in 2021. For surface water bodies status classification is grouped into ecological and chemical status and for groundwater bodies they are grouped into chemical and quantitative status. This data supports the Water Framework Directive river basin management plans that can be found here: https://www.gov.uk/government/collections/river-basin-management-plans-2015 and is available to view interactively here: http://environment.data.gov.uk/catchment-planning/ManagementCatchment/3052 Attribution statement: © Environment Agency copyright and/or database right 2016. All rights reserved.水体状态分类数据，是依托一系列被定义为**水质要素（quality elements）**的不同参数，对各类水体的质量或状态进行表征与划分的数据集。本数据集涵盖特伦特河下游与埃雷沃什流域（Lower Trent and Erewash catchment）内所有水体的分类历史。 若分类采用2009年首次流域规划周期启动时确立的规则，则该类数据将被标记为**周期1（Cycle 1）**，数据时限至2015年终止。若分类采用更新后的流域规划中所使用的最新规则，则数据将被标记为**周期2（Cycle 2）**，此类数据始于2013年，至2021年结束。 其中，地表水体的状态分类可划分为生态状态与化学状态两类；地下水体的状态分类则分为化学状态与水量状态两类。 本数据支撑《水框架指令（Water Framework Directive）》项下的流域管理规划，相关规划可通过以下链接查阅：https://www.gov.uk/government/collections/river-basin-management-plans-2015；交互式浏览入口为：http://environment.data.gov.uk/catchment-planning/ManagementCatchment/3052 归属声明：© 环境署（Environment Agency）2016年版权及/或数据库权益，保留所有权利。