California river classification field survey protocols

A river classification was developed for major regions of the State of California USA using a field surveying protocol that can now be used to collect data at additional sites. The field protocols provide a framework for systematically collecting a variety of physical geomorphic data using uniform sampling, including channel slope, cross-sectional morphology, sediment composition, and longitudinal depth and width variability. The standard sampling layout consists of a stream length 15 times the active channel width (measured along the thalweg) divided into 10 equidistant transects that are arranged perpendicular to the stream channel. Details of the river classification of the Sacramento Basin region are available in Byrne et al (2020).

This resource contains the field surveying protocols and field data collection template.

本研究针对美国加利福尼亚州主要区域开发了一套河流分类体系，其采用的野外勘测规程现已可用于新增点位的数据采集工作。该野外规程提供了标准化采样框架，可系统采集各类物理地貌数据，涵盖河道坡度、横断面形态、沉积物组成以及沿程水深与宽度变化特征。标准采样布局为：沿河道深泓线（thalweg）测量的活动河道宽度的15倍河段，被划分为10条等距断面，且所有断面均垂直于河道走向。萨克拉门托盆地（Sacramento Basin）区域的河流分类细节可参见Byrne等人（2020）的研究成果。本数据集包含上述野外勘测规程以及野外数据采集模板。