SurfaceWaterSamplesResult.gdb

The data available through this portal represents laboratory data resulting from long-term surface water and groundwater quality monitoring programs conducted county-wide by the Miami Dade Department of Regulatory and Economic Resources, Division of Environmental Resources Management (DERM). DERM's water quality programs are intended to characterize county-wide, larger-scale patterns and temporal trends in water quality, and help determine background conditions and ranges of normal variability in water quality. The water quality programs are also designed to meet certain permit monitoring conditions (i.e., NPDES and Water Use Permit). The period of record for each program, and analyses conducted, varies. Updated: Weekly The data was created using: Projected Coordinate System: WGS_1984_Web_Mercator_Auxiliary_Sphere Projection: Mercator_Auxiliary_Sphere本门户提供的数据，系迈阿密-戴德县监管与经济资源部环境资源管理司（Division of Environmental Resources Management，缩写DERM）开展全县范围长期地表水与地下水水质监测项目所产生的实验室检测数据。该司的水质监测项目旨在刻画全县尺度下水质的宏观空间格局与时间变化趋势，辅助确定水质的背景基准值与正常波动区间。本水质监测项目同时也为满足特定许可监测要求而设立，涵盖国家污染物排放消除系统（National Pollutant Discharge Elimination System, NPDES）许可及用水许可（Water Use Permit）相关监测需求。各监测项目的记录周期及所开展的分析内容均存在差异。数据更新频率为每周一次。本数据集采用以下坐标系构建：投影坐标系：WGS_1984_Web_Mercator_Auxiliary_Sphere；投影方式：Mercator_Auxiliary_Sphere。