Improving geospatial components of integrated stormwater management plans (ISMPs)

城市雨水径流中的污染物是城市水生态系统的主要压力源，并因不透水表面的增加而加剧。Kerr Wood Leidal Associates Ltd.的工业合作伙伴(KWL)定期为加拿大城市的雨水管理提供监测和建模建议，并在设计大都会温哥华的综合雨水管理计划（ISMP）中发挥了重要作用。我们的KWL合作伙伴报告说，几个常用的ISMP指标可能不足以进行监测。土地覆盖措施，如%不透水面积和%河岸森林完整性被用于ISMPs预测和跟踪城市水生系统的变化。到目前为止，粗略的spatialresolution数据描绘这样的功能是不够的映射精细尺度不透水表面和残留的河岸植被。该项目将改善与土地利用和土地覆盖有关的指标（例如，不透水的表面（包括河流植被），这是ISMP方法的基础。评估ISMP的有效性和局限性，并提出改进建议，是其持续实施的关键。

Pollutants in urban stormwater runoff from cities is a primary stressor on urban aquatic ecosystems andexacerbated by increased impervious surfaces. Our industrial partners at Kerr Wood Leidal Associates Ltd.(KWL) routinely provide monitoring and modelling advice for stormwater management in Canadian cities andhave been instrumental in designing Metro Vancouver's Integrated Stormwater Management Plans (ISMPs).Our KWL partners report that several commonly-used ISMP indicators are potentially inadequate formonitoring. Land cover measures such as % impervious area and % riparian forest integrity are used in ISMPsto predict and track changes in urban aquatic systems. To date, delineation of such features with coarse spatialresolution data is inadequate for mapping fine-scale impervious surfaces and remnant riparian vegetation. ThisENGAGE project will improve indicators related to land use and land cover (e.g., impervious surfaces andriparian stream vegetation) which underpin the ISMP approach. Assessing the effectiveness and limitations ofISMPs, and suggesting improvements, is the key to their continued implementation.