Supplementary material underlying the publication: From prediction to engagement: Using technical models to enhance consultation in water management

This supplementary material further describes the methods, data, and results of a water quality modeling project in the Brantas River basin, Indonesia. The model combines a rainfall-runoff model and a pollution fate and transport model to predict resultant water quality levels (in terms of biochemical oxygen demand) along segments of the river, based on estimation of pollution source contributions from crop agriculture, livestock, and domestic wastewater across the river basin. Data used in the model includes historical rainfall and flow data, pollution source data (estimations of BOD contributions based on numbers of cattle, crops, people, etc. and coverage of wastewater management technologies), and observed water quality data.

本补充材料进一步阐述了印度尼西亚布兰塔斯河（Brantas River）流域水质模拟项目的方法、数据与研究结果。该模型耦合降雨径流模型（rainfall-runoff model）与污染物归趋及迁移模型（pollution fate and transport model），基于对全流域内种植业、畜牧业及生活污水的污染贡献量估算，预测沿河各河段的水质水平（以生化需氧量（Biochemical Oxygen Demand，BOD）计）。模型所采用的数据包括历史降雨与径流数据、污染源数据（基于牛只存栏量、作物种植规模、人口数量等参数以及污水处理技术覆盖情况估算的生化需氧量贡献量），以及实测水质数据。