Supporting Information: Estimating Discharge in Low-Order Rivers with High-Resolution Aerial Imagery

Introduction
This document provides an overview of the accompanying data files used in the production the accompanying manuscript. 
Text S1.
For each virtual gauging station, we have included:
1. NIR orthorectified mosaics for each flight
2. Low flow RGB orthorectified mosaic and DSMs
3. Shapefiles of the hydraulic model domains
4. HEC-RAS models
5. Total station channel surveys
6. In situ observations of wetted width and wetted widths extracted from imagery

WRR_GIS:
All of the imagery, digital surface models, and shapefiles for the hydraulic model domains (items 1-3 above) are included in the WRR_GIS folder. To view these data, launch the included ArcMap Map Document: KingEtAl_WRR_2017.mxd. Data reference paths are relative for inter computer fidelity. This map document was produced with ArcMap 10.3. The hydraulic domain shapefile data were used to produce the geometry files used in HEC-RAS with the HEC-GeoRAS toolkit.

WRR_HEC-RAS:
The HEC-RAS models (item 4 above), produced in HEC-RAS 5.0.3 are provided in the folder WRR_HEC-RAS. The project files for each virtual gauging station are located in WRR_HEC-RAS \ VGS# \ Projects where VGS# is virtual gauging station number of interest. These project files contain the information to run the open channel hydraulic models. Opening these files will prompt a warning message that some files were not found. These files were test runs that are not germane to the final results and were therefore not included in an attempt to minimize confusion. Note that HEC-RAS models follow our local naming convention and map onto the virtual gauging station naming convention as follows: VGS1 = Kup8US, VGS2 = Kup7DS, VGS3 = Kup5uus.

WRR_GroundTruthing:
The ground truthing data (items 5 and 6 above) are included in csv files within the WRR_GroundTruthing folder. Total station surveys are provided along with corresponding elevations extracted from the Digital Surface Models in csv files located at WRR_GroundTruthing \ ChannelSurveys \ VGS#TransectCompare.csv where VGS# is the virtual gauging station of interest. Observed wetted width and the corresponding wetted widths extracted from the NIR mosaics are provided in the csv file: WRR_GroundTruthing \ WettedWidths \ WettedWidthComparison.csv.

引言
本文件概述了配套研究论文撰写所使用的附属数据文件。
补充文本S1
针对每个虚拟测站（virtual gauging station），我们提供了以下数据：
1. 每次飞行任务的NIR（近红外）正射校正镶嵌影像
2. 枯水期RGB正射校正镶嵌影像及DSM（数字表面模型）
3. 水力模型域的Shapefile（形状文件）
4. HEC-RAS模型
5. 全站仪河道测量数据
6. 原位实测湿润宽度及从影像中提取的湿润宽度数据

WRR_GIS文件夹：
本文件夹包含上述第1至3项的所有影像、数字表面模型（DSM）及水力模型域Shapefile（形状文件）。如需查看这些数据，请启动附带的ArcMap地图文档：KingEtAl_WRR_2017.mxd。数据引用路径采用相对路径以保证跨计算机兼容性。该地图文档基于ArcMap 10.3制作。水力模型域Shapefile（形状文件）通过HEC-GeoRAS工具包生成HEC-RAS所需的几何文件。

WRR_HEC-RAS文件夹：
本文件夹包含上述第4项的HEC-RAS模型，该模型基于HEC-RAS 5.0.3版本制作。每个虚拟测站的项目文件位于WRR_HEC-RASVGS#Projects路径下，其中VGS#为目标虚拟测站编号。这些项目文件包含了明渠水力模型的运行所需信息。打开这些文件时会弹出警告，提示部分文件未找到——这些文件为与最终研究成果无关的测试运行文件，为避免混淆未纳入本次数据包。请注意，HEC-RAS模型遵循本研究的本地命名规范，与虚拟测站命名的对应关系如下：VGS1 = Kup8US，VGS2 = Kup7DS，VGS3 = Kup5uus。

WRR_GroundTruthing文件夹：
本文件夹包含上述第5、6项的地面验证数据，均以CSV（逗号分隔值）格式存储。全站仪测量数据及从数字表面模型（DSM）提取的对应高程数据存储于WRR_GroundTruthingChannelSurveysVGS#TransectCompare.csv路径下，其中VGS#为目标虚拟测站编号。实测湿润宽度及从NIR镶嵌影像中提取的对应湿润宽度数据存储于CSV文件：WRR_GroundTruthingWettedWidthsWettedWidthComparison.csv。