Herbicide, nutrient, and suspended sediment data for streams in the Devils Icebox and Hunters Caves

The data set contains concentration, load, and daily discharge data for Devils Icebox Cave and Hunters Cave from 1999 to 2002. The data are available in Microsoft Excel 2010 format. Sheet 1 (Cave Streams Metadata) contains supporting information regarding the length of record, site locations, parameters measured, parameter units, method detection limits, describes the meaning of zero and blank cells, and briefly describes unit area load computations. Sheet 2 (Devils Icebox Concentration Data) contains concentration data from all samples collected from 1999 to 2002 at the Devils Icebox site for 12 analytes and two computed nutrient parameters. Sheet 3 (Devils Icebox SS Conc Data) contains 15-minute suspended sediment (SS) concentrations estimated from turbidity sensor data for the Devils Icebox site. Sheet 4 (Devils Icebox Load & Discharge Data) contains daily data for discharge, load, and unit area loads for the Devils Icebox site. Sheet 5 (Hunters Cave Concentration Data) contains concentration data from all samples collected from 1999 to 2002 at the Hunters Cave site for 12 analytes and two computed nutrient parameters. Sheet 6 (Hunters Cave SS Conc Data) contains 15-minute SS concentrations estimated from turbidity sensor data for the Hunters Cave site. Sheet 7 (Hunters Cave Load & Discharge Data) contains daily data for discharge, load, and unit area loads for the Hunters Cave site.

Atrazine concentrations in Goodwater Creek Experimental Watershed (GCEW) were shown to be among the very highest of any watershed in the United States based on comparisons using the national Watershed Regressions for Pesticides (WARP) model and by direct comparison with the 112 watersheds used in the development of WARP. The herbicide data collected in GCEW are documented at plot, field, and watershed scales. This 20-yr-long (1991-2010) effort was augmented with a spatially broad effort within the Central Mississippi River Basin encompassing 12 related claypan watersheds in the Salt River Basin, two cave streams on the fringe of the Central Claypan Areas in the Bonne Femme watershed, and 95 streams in northern Missouri and southern Iowa. The research effort on herbicide transport has highlighted the importance of restrictive soil layers with smectitic mineralogy to the risk of transport vulnerability. Near-surface soil features, such as claypans and argillic horizons, result in greater herbicide transport than soils with high saturated hydraulic conductivities and low smectitic clay content. Resources in this dataset:Resource Title: GeoData catalog record. File Name: Web Page, url: https://geodata.nal.usda.gov/geonetwork/srv/eng/catalog.search#/metadata/GoodwaterNutrient_jjm_2015-03-12_1533

该数据集收录了1999年至2002年间Devils Icebox Cave和Hunters Cave的浓度、负荷以及日排放数据。数据以Microsoft Excel 2010格式提供。第一页（Cave Streams Metadata）包含了关于记录长度、场地位置、测量参数、参数单位、检测限度的辅助信息，并对零值和空白单元格的含义进行了说明，同时简要描述了单位面积负荷的计算方法。第二页（Devils Icebox Concentration Data）包含了1999年至2002年在Devils Icebox场地收集的所有样本的浓度数据，涉及12种分析物和两种计算出的营养参数。第三页（Devils Icebox SS Conc Data）包含了从浑浊度传感器数据估计的Devils Icebox场地的15分钟悬浮固体（SS）浓度。第四页（Devils Icebox Load & Discharge Data）包含了Devils Icebox场地的日排放、负荷和单位面积负荷数据。第五页（Hunters Cave Concentration Data）包含了1999年至2002年在Hunters Cave场地收集的所有样本的浓度数据，涉及12种分析物和两种计算出的营养参数。第六页（Hunters Cave SS Conc Data）包含了从浑浊度传感器数据估计的Hunters Cave场地的15分钟SS浓度。第七页（Hunters Cave Load & Discharge Data）包含了Hunters Cave场地的日排放、负荷和单位面积负荷数据。
在Goodwater Creek Experimental Watershed（GCEW）中检测到的阿特拉津浓度，根据使用国家流域回归模型（WARP）进行的比较以及与用于WARP开发的112个流域的直接比较，均显示为美国任何流域中非常之高的水平。GCEW中收集的除草剂数据在地块、田地和流域尺度上进行了记录。这一为期20年的（1991-2010）研究工作，在密西西比河中游地区的空间广泛努力中得到了加强，该努力涵盖了盐河盆地中的12个相关粘土层流域、在Bonne Femme流域中央粘土区域边缘的2条洞穴溪流，以及密苏里州北部和爱荷华州南部的95条溪流。关于除草剂迁移的研究工作强调了具有滑石矿物学的限制性土壤层对迁移风险脆弱性的重要性。近地表土壤特征，如粘土盘和蒙脱石层，导致比具有高饱和水力传导率和低滑石粘土含量的土壤更大的除草剂迁移。本数据集中包含的资源：资源标题：GeoData目录记录。文件名：网页，网址：https://geodata.nal.usda.gov/geonetwork/srv/eng/catalog.search#/metadata/GoodwaterNutrient_jjm_2015-03-12_1533