1999 Index of Stream Condition Scores

The ISC1999_SCORES dataset represents the 1999 Index of Stream Condition (ISC) overall score and subindex scores for each ISC river reach in the state of Victoria. The first ISC assessment in 1999 provided a snapshot of river health for major rivers and streams in Victoria. The 1999 ISC provides scores for five components of stream condition: (i) hydrology (based on a measure of the gross change between natural and existing monthly flows, catchment permeability and the presence of hydroelectric power stations); (ii) physical form (based on bed and bank stability, influence of artificial barriers, and instream physical habitat); (iii) streamside zone (based on types of plants; spatial extent, width, and intactness of riparian vegetation; and condition of wetlands and billabongs); (iv) water quality (based on an assessment of phosphorus, turbidity, electrical conductivity and pH); and (v) aquatic life (based on number of families of macroinvertebrates). Further information available at: https://www.water.vic.gov.au/waterways-and-catchments/rivers-estuaries-and-waterways/monitoring

ISC1999_SCORES数据集涵盖了维多利亚州各ISC河段的1999年河流状况指数（Index of Stream Condition, ISC）总得分与分指数得分。1999年首次开展的ISC评估，为维多利亚州主要河流与溪流的健康状况提供了现状快照。1999年ISC从五大维度评估河流状况并给出对应得分：（i）水文状况：基于自然月均流量与现有月均流量的总体变化量、流域渗透性以及水电站分布情况进行测算；（ii）物理形态状况：基于河床与岸坡稳定性、人工障碍物的影响以及河道内物理栖息地条件进行评估；（iii）滨岸带状况：基于植物类型、河岸植被的空间范围、宽度与完整度，以及湿地与季节性水塘的健康状态进行评价；（iv）水质状况：基于磷含量、浊度、电导率与pH值的监测结果进行评估；（v）水生生物状况：基于大型无脊椎动物的科类数量进行测算。更多详细信息可参阅：https://www.water.vic.gov.au/waterways-and-catchments/rivers-estuaries-and-waterways/monitoring