Best Practices in Hydrography Extraction from Lidar: Status Update

Community-led hydrography update projects have continued in the past years throughout the US. In parallel, a Dec 2014 call by USGS management for the development of integrated Elevation-Hydrography
data initiated a few pilot tasks to explore production issues in hydrography extraction from lidar. This talk explores the creation of a distribution facility for Best Practice resources, pointing to benefits in
efficiency and quality for any upcoming update project.
Consideration of the characteristics of such a facility in several areas are covered: Tool development and availability. Workflow protocol review, vetting and distribution. Data model constraints and capability domain. Community participation in Quality Control.
The talk takes as it’s foundation Best Practices Recommendations gathered by the practitioner community and presented at the AWRA 2014 Conference. These were part of the input that led to recent USGS
efforts.

Presentation at 2018 AWRA Spring Specialty Conference: Geographic Information Systems (GIS) and Water Resources X, Orlando, Florida, April 23-25, http://awra.org/meetings/Orlando2018/

近年来，美国各地持续开展了由社区引领的 hydrography（水系）更新项目。与此同时，美国地质调查局管理团队于2014年12月发起的关于开发集成高程-水系数据的呼吁，启动了若干试点任务，旨在探索从 lidar（激光雷达）数据中提取水系的生产问题。本次演讲探讨了创建最佳实践资源分发设施的可能性，并指出这对于即将到来的更新项目在效率和质量上均具有显著益处。
在多个领域对这类设施的特点进行了考虑：工具的开发与可用性。工作流程协议的审查、验证与分发。数据模型约束与能力域。社区参与质量监控。
本次演讲以由从业者社区收集并在2014年AWRA会议（美国水资源协会）上展示的最佳实践推荐为基础。这些推荐构成了美国地质调查局近期努力的输入。
在2018年AWRA春季专题会议上进行展示：地理信息系统（GIS）与水资源X，佛罗里达州奥兰多，4月23-25日，http://awra.org/meetings/Orlando2018/。