NorWeST Stream Temperatures 2080s (Feature Layer)

This layer represents modeled stream temperatures derived from the NorWeST point feature class (NorWest_TemperaturePoints). NorWeST summer stream temperature scenarios were developed for all rivers and streams in the western U.S. from the > 20,000 stream sites in the NorWeST database where mean August stream temperatures were recorded. The resulting dataset includes stream lines (NorWeST_PredictedStreams) and associated mid-points NorWest_TemperaturePoints) representing 1 kilometer intervals along the stream network. Stream lines were derived from the 1:100,000 scale NHDPlus dataset (USEPA and USGS 2010; McKay et al. 2012). Shapefile extents correspond to NorWeST processing units, which generally relate to 6 digit (3rd code) hydrologic unit codes (HUCs) or in some instances closely correspond to state borders. The line and point shapefiles contain identical modeled stream temperature results. The two feature classes are meant to complement one another for use in different applications. In addition, spatial and temporal covariates used to generate the modeled temperatures are included in the attribute tables at https://www.fs.usda.gov/rm/boise/AWAE/projects/NorWeST/ModeledStreamTemperatureScenarioMaps.shtml. The NorWeST NHDPlusV1 processing units include: Salmon, Clearwater, Spokoot, Missouri Headwaters, Snake-Bear, MidSnake, MidColumbia, Oregon Coast, South-Central Oregon, Upper Columbia-Yakima, Washington Coast, Upper Yellowstone-Bighorn, Upper Missouri-Marias, and Upper Green-North Platte. The NorWeST NHDPlusV2 processing units include: Lahontan Basin, Northern California-Coastal Klamath, Utah, Coastal California, Central California, Colorado, New Mexico, Arizona, and Black Hills.This record was taken from the USDA Enterprise Data Inventory that feeds into the https://data.gov catalog. Data for this record includes the following resources: ISO-19139 metadata ArcGIS Hub Dataset ArcGIS GeoService CSV Shapefile GeoJSON KML For complete information, please visit https://data.gov.本图层代表基于NorWeST点要素类（NorWest_TemperaturePoints）生成的模拟河流水温数据。NorWeST夏季河流水温情景面向美国西部所有河流与溪流构建，数据源自NorWeST数据库中超过20000个监测站点，这些站点均记录了8月平均河流水温。最终生成的数据集包含河流线（NorWeST_PredictedStreams）以及沿河网每1公里间隔布设的关联中点（NorWest_TemperaturePoints）。河流线源自比例尺为1:100000的NHDPlus数据集（美国环境保护署（USEPA）与美国地质调查局（USGS），2010年；McKay等，2012年）。Shapefile的空间覆盖范围与NorWeST处理单元保持一致，此类单元通常对应6位编码（第三位为分类码）的水文单元代码（HUCs），部分场景下则与州界高度匹配。线要素与点要素的Shapefile包含完全一致的模拟河流水温计算结果，两类要素类可互为补充，适配不同的应用需求。此外，用于生成模拟水温的空间与时间协变量已收录于以下链接对应的属性表中：https://www.fs.usda.gov/rm/boise/AWAE/projects/NorWeST/ModeledStreamTemperatureScenarioMaps.shtml。NorWeST的NHDPlusV1处理单元包括：萨蒙河、克利尔沃特河、斯波坎、密苏里河源头、斯内克-贝尔河、中斯内克河、中哥伦比亚河、俄勒冈海岸流域、俄勒冈中南部流域、上哥伦比亚-亚基马河流域、华盛顿海岸流域、上黄石-大角河流域、上密苏里-马里亚斯河流域以及上格林-北普拉特河流域。NorWeST的NHDPlusV2处理单元包括：拉洪坦盆地、北加州-海岸克拉马斯河流域、犹他州流域、加州海岸流域、加州中部流域、科罗拉多州流域、新墨西哥州流域、亚利桑那州流域以及布莱克希尔斯流域。本数据集记录源自美国农业部（USDA）企业数据清单，该清单同步至https://data.gov公开目录。本记录包含以下数据资源：ISO-19139元数据、ArcGIS Hub数据集、ArcGIS地理服务、CSV、Shapefile、GeoJSON、KML。如需获取完整信息，请访问https://data.gov。