USDA/ARS Kimberly, ID - Furrow Infiltration and Erosion Data, 1998 to 2016

The data are derived from the field monitoring of irrigated furrows from 1998 to 2016 at the research farm of the USDA/ARS-Northwest Irrigation and Water Research Laboratory in Kimberly, Idaho, USA (south-central Idaho). For each monitored furrow, irrigation inflow rates, outflow rates, and sediment concentrations were recorded periodically during the irrigation. A gated pipe conveyed irrigation water across the plots at the head, or inflow-end, of the furrows and adjustable spigots supplied water to each irrigated furrow. The methodology used to obtain the field data is described by Lentz and Sojka (2009). Inflows were measured by timing the filling rate of a known volume, and runoff were measured with long-throated, v-notch flumes. Outflows were measured and runoff samples collected at 30 min intervals during the first 1-3 hr of an irrigation, and every hour or two for the next 3 to 5 hr. If the set was continued for an additional 12 hr, two to four additional measurements were made. Immediately after each flume reading, sediment concentration in furrow streams were measured by collecting one-liter runoff samples from free-flowing flume discharge. The weight of sediment per liter of runoff was determined from the settled volume of sediment using the Imhoff-cone technique. Three Imhoff-cone sediment samples were collected from each treatment in each irrigation. These were filtered, and the papers dried and weighed. A calibration function relating the 30-min, settled-sediment volume to sediment mass-per-unit-volume of runoff was then calculated and used to convert settled sediment volume in cones to sediment mass.
The field data for each study or year were analyzed using the WASHOUT program (Lentz and Sojka, 1995). The WASHOUT program produces an output file (filename.out), which become components of this Ag Data Commons data set.
For many years and irrigations, furrows were monitored at one or more locations along the furrow, as well as at the end (bottom) of the furrow. In these cases, data for each position within the furrow are listed in the data set, labelled for example as "Top", "Middle", and "Bottom" (See Data Dictionary tab). For each furrow position the data represent the flow, infiltration, and runoff information for the length of furrow, which begins at its inflow end (top of the field) and ends at the defined furrow position. This distance is listed in the field data file for each furrow and irrigation.
An Irrigation Data Summary is included as a tab in the data set spreadsheet. This is a summary list of the studies and irrigations that are included in the data set. Also included is a PAM-Application-Codes tab that lists description of the polyacrylamide (PAM) treatments that were employed in some of the included studies.
Resources in this dataset:Resource Title: Furrow Infiltration and Erosion Data, 1998 to 2016. File Name: IrrigationData.xlsxResource Description: Furrow irrigation inflow, outflow, infiltration, and sediment load data
Summary of studies and irrigations included in the data
Data Dictionary
Description of specific polyacrylamide treatments included in some of the studiesResource Title: Data Dictionary - Kimberly, ID - Furrow Infiltration and Erosion Data, 1998 to 2016. File Name: Kimberly-ID-Furrow-Inf-Erosion-DataDictionary1998-2016.csv

本数据集源于美国爱达荷州凯里布利（Kimberly）的农业部（USDA）/ARS-西北灌溉与水研究实验室（Northwest Irrigation and Water Research Laboratory）自1998年至2016年期间对灌水沟的实地监测。对于每个监测的灌水沟，在灌溉期间定期记录了灌溉入流率、出流率和泥沙浓度。通过闸门管道将灌溉水输送至灌水沟的上端或入流端，可调节的龙头为每个灌水沟供水。获取实地数据的方法由Lentz和Sojka（2009年）所描述。入流率通过测量已知体积的填充速度来确定，而径流则使用长颈V型槽测量。在灌溉的前1-3小时内，每30分钟测量一次出流率并收集径流样品，接下来的3-5小时内每小时或两小时测量一次。如果灌溉持续超过12小时，则额外进行两到四次测量。在每个V型槽读数后，立即通过收集来自自由流动V型槽排放的一升径流样品来测量灌水沟中的泥沙浓度。使用Imhoff圆锥法从沉降的泥沙体积中确定每升径流的泥沙重量。每个处理在每次灌溉中收集三个Imhoff圆锥泥沙样品，这些样品被过滤、干燥并称重。然后计算出将30分钟沉降泥沙体积与单位体积径流的泥沙质量相关联的校准函数，并将其用于将圆锥中的沉降泥沙体积转换为泥沙质量。每个研究或年份的实地数据均使用WASHOUT程序（Lentz和Sojka，1995年）进行分析。WASHOUT程序生成一个输出文件（文件名为filename.out），该文件成为本Ag Data Commons数据集的组成部分。在多年的灌溉中，对灌水沟的一个或多个位置以及灌水沟的末端（底部）进行了监测。在这些情况下，数据集中列出了灌水沟内每个位置的数据，例如标记为“顶部”、“中部”和“底部”（见数据字典标签）。对于每个灌水沟位置，数据代表了从灌水沟的入流端（田地顶部）到定义的灌水沟位置的灌水沟长度内的流量、渗透和径流信息。此距离列在每个灌水沟和灌溉的实地数据文件中。数据集电子表格中包含一个灌溉数据摘要标签页，这是一个包含数据集中包含的研究和灌溉的总结列表。还包括一个PAM-Application-Codes标签页，其中列出了在部分研究中采用的多丙烯酰胺（PAM）处理的描述。