Radar-based field measurements of surface velocity and discharge from 10 U.S. Geological Survey streamgages for various locations in the United States, 2002-19 (ver 2.0, January 2022).

Near-field remote sensing methods were used to collect Doppler velocity and pulsed stage radar data at 10 conventional U.S. Geological Survey (USGS) streamgages in river reaches with varying hydrologic and hydraulic characteristics. Basin sizes ranged from 381 to 66,200 square kilometers and included agricultural, desert, forest, mixed, and high-gradient mountain environments. During the siting and operational phases, radar-derived mean-channel (mean) velocity and discharge were computed using the Probability Concept (PC) and were compared against conventional instantaneous measurements and stage-discharge time series. During siting phase, radars were located, installed, and PC parameters computed. To test the efficacy of the remote-sensing methods, radars were deployed for extended periods of time to capture a range of hydraulic conditions. During operational phase, continuous time series of radar-derived surface velocity and discharge and stage-discharge were recorded, computed, and transmitted contemporaneously and continuously in real time every 5 to 15 minutes. Data are presented in two compressed (zipped) folders and one comma-separated value (CSV) file. One folder contains the radar-derived discharge values. One folder contains the stage-discharge values that were used to check the accuracy of radar-derived values. The CSV file contains siting and validation values used to derive the discharge values for the radar time series.
Version 2.0 contains an additional CSV file named "ST_Stage_Gunnison.csv" (in the folder "Radar_derived_Gunnison_stage_timeseries") with 15-minute radar-derived stage data from the Gunnison River site (USGS Site identification 09152500), which was not included in the original data release.
First posted - June 01, 2020
Revised – January XX, 2022 (version 2.0)

本数据集采用近场遥感方法，于美国地质调查局（U.S. Geological Survey, USGS）的10个常规河道水文监测站处，针对水文与水力特性各异的河段，采集了多普勒流速与脉冲水位雷达数据。流域面积范围为381至66200平方千米，涵盖农业、荒漠、森林、混合地貌以及高梯度山地等多种环境。在选址与运行两个阶段中，研究人员均采用概率概念（Probability Concept, PC）计算雷达反演得到的河道断面平均流速与流量，并将其与常规瞬时测量数据及水位-流量时序数据进行对比。其中选址阶段需完成雷达的选址、安装，并计算PC相关参数。为验证遥感方法的有效性，雷达会被长期部署以捕捉多样的水力工况。运行阶段中，雷达将以5至15分钟的实时更新间隔，同步连续地记录、计算并传输雷达反演的地表流速、流量以及水位-流量的连续时序数据。数据集包含两个压缩（ZIP）文件夹与一个逗号分隔值（Comma-Separated Values, CSV）文件。其中一个文件夹存储雷达反演得到的流量数据；另一个文件夹存储用于校验雷达反演数据精度的水位-流量数据；CSV文件则包含用于推导雷达时序流量数据的选址与验证值。2.0版本新增了一个名为"ST_Stage_Gunnison.csv"的CSV文件（位于"Radar_derived_Gunnison_stage_timeseries"文件夹中），该文件包含甘尼森河监测站点（美国地质调查局站点编号09152500）的15分钟间隔雷达反演水位数据，该内容未纳入原始数据发布包。本数据集首次发布于2020年6月1日，2022年1月XX日完成修订（版本2.0）。