Wessex Water Event Duration Monitoring Monthly 2026

The overall objective of this use case is to pro-actively publish data that is regularly requested via Environmental Information Regulation Requests (EIRRs). By supplying historic data about the activity of event duration monitors situated at storm overflows, we believe that we can reduce requests for localised storm overflow performance data. The data will detail a lower level of granularity and higher update frequency than the Environment Agency (EA) Annual returns, but a more accurate picture of storm overflow operations than is currently available in the National Storm Overflow Hub (NSOH). EDM records with latitude and longitude values of 0 are newly monitored; their locations will be updated in the coming months. Schema: Field Name DESCRIPTION DATA TYPE EXAMPLE DATA SiteId * Unique Identity of the Storm Overflow String ABC123 SiteName The name given to the Storm Overflow String Paris Road SO ReceivingWatercourse The name of the watercourse into which a discharge is directed String River Trent PermitReference The reference for the permit used String abc123 OutfallLatitude * Latitude of the outfall Float 52.21691 OutfallLongitude * Longitude of the outfall Float 0.14449 IsBathingWater An indication of whether the outfall meets a designated bathing water Boolean True BathingWaterName The name of the bathing water into which the outfall discharges String Spring Lake EventId The unique identifier assigned to this event String abc123 EventStart * Date and Time that the monitor indicated a discharge had started DateTime YYYY-MM-DDTHH:mm:ss EventEnd * Date and Time that the monitor indicated a discharge had ended DateTime YYYY-MM-DDTHH:mm:ss Duration The length of time between the event’s start and stop time Duration P3Y6M4DT12H30M5S EventVerified An indication of whether this event is verified at the time of it being published Boolean False *Mandatory **Requires a standard value本用例的总体目标为主动发布通过环境信息条例申请（Environmental Information Regulation Requests, EIRRs）频繁索取的数据。通过提供部署于暴雨溢流设施的事件时长监测器（Event Duration Monitor, EDM）的运行历史数据，我们期望能够减少针对本地化暴雨溢流性能数据的申请需求。相较于环境署（Environment Agency, EA）年度报告中的数据，本数据集的粒度更粗、更新频率更高，但相比当前国家暴雨溢流枢纽（National Storm Overflow Hub, NSOH）所提供的内容，能够更精准地展现暴雨溢流的运行状态。经纬度数值均为0的事件时长监测器记录为新增监测对象，其位置信息将在未来数月内完成更新。 数据集架构说明如下： | 字段名 | 字段说明 | 数据类型 | 示例数据 | | --- | --- | --- | --- | | SiteId * | 暴雨溢流设施的唯一标识符 | 字符串 | ABC123 | | SiteName | 暴雨溢流设施的命名 | 字符串 | Paris Road SO | | ReceivingWatercourse | 溢流排放所汇入的水道名称 | 字符串 | River Trent | | PermitReference | 所使用许可证的编号 | 字符串 | abc123 | | OutfallLatitude * | 排放口纬度 | 浮点型 | 52.21691 | | OutfallLongitude * | 排放口经度 | 浮点型 | 0.14449 | | IsBathingWater | 标识该排放口是否符合指定沐浴水域的要求 | 布尔型 | True | | BathingWaterName | 该排放口所汇入的沐浴水域名称 | 字符串 | Spring Lake | | EventId | 分配给该事件的唯一标识符 | 字符串 | abc123 | | EventStart * | 监测设备指示排放开始的日期与时间 | 日期时间型 | YYYY-MM-DDTHH:mm:ss | | EventEnd * | 监测设备指示排放结束的日期与时间 | 日期时间型 | YYYY-MM-DDTHH:mm:ss | | Duration | 事件起止时间间隔 | 时长类型 | P3Y6M4DT12H30M5S | | EventVerified | 标识该事件在发布时是否已完成核验 | 布尔型 | False | * 为必填字段；** 需采用标准取值。