Upper Washita River Experimental Watersheds: Nutrient Water Quality Data

Climate variability, changing land use and management, and dynamic policy environments are the main reasons why long-term water quality data sets are needed to understand and predict possible water quality outcomes to alternative future scenarios. Such data sets were acquired by the USDA-ARS in three watersheds in Oklahoma: the Southern Great Plains Research Watershed (SGPRW), the Little Washita River Experimental Watershed (LWREW), and the Fort Cobb Reservoir Experimental Watershed (FCREW). Water quality data collection in the SGPRW began in the 1960s and continued through 1978, while that in the LWREW covered the 1960s to 1990 period. Data collection began in the FCREW in 2004 and continues through the present.

The data were collected from streams, unit source watersheds, groundwater wells, and reservoirs. It should be noted that various forms of P—reactive P, total P, soluble P, water-soluble P, particulate P, bioavailable P, total water-soluble P—were measured and are described here as given in the original data sets. No effort was made to determine the similarity of these variables. 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/WashitaNutrient_jjm_2015-03-16_1025

气候变率、土地利用与管理模式的变迁以及动态的政策环境是长期水质数据集所需的主要动因，此类数据集对于理解与预测未来不同情景下可能的水质变化趋势至关重要。美国农业部农业研究服务局（USDA-ARS）在俄克拉荷马州的三个流域——南部大平原研究流域（SGPRW）、小瓦希塔河实验流域（LWREW）和福特科布水库实验流域（FCREW）——收集了此类数据集。SGPRW的水质数据收集始于20世纪60年代，持续至1978年；LWREW的数据收集覆盖了1960年至1990年期间；FCREW的数据收集则始于2004年，并持续至今。数据采集涵盖了溪流、单元源流域、地下水井和水库。值得注意的是，在此数据集中，对多种形式的磷（如活性磷、总磷、溶解性磷、水溶性磷、颗粒磷、生物可用磷、总水溶性磷）进行了测量，具体描述与原始数据集一致。未对变量的相似性进行评估。本数据集的资源包括：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/WashitaNutrient_jjm_2015-03-16_1025