NorWeST Stream Temperatures 1993-2011 (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 OGC WMS CSV Shapefile GeoJSON KML For complete information, please visit https://data.gov.

本层表示由 NorWeST 点要素类（NorWest_TemperaturePoints）推导出的模拟河流水温。NorWeST 夏季河流水温情景涵盖了美国西部所有河流与溪流，基于 NorWeST 数据库中超过 20,000 个记录了平均八月河流水温的点位。所生成的数据集包含了河流线（NorWeST_PredictedStreams）及其相关中点（NorWest_TemperaturePoints），它们代表沿河流网络 1 公里间隔的位置。河流线来源于 1:100,000 比例尺的 NHDPlus 数据集（USEPA 和 USGS 2010；McKay 等人，2012）。Shapefile 的范围与 NorWeST 处理单元相对应，通常与六位数的（第三级）水文单元代码（HUCs）相关联，或在某些情况下与州边界紧密对应。线要素和点要素 Shapefile 包含了相同的模拟河流水温结果。这两个要素类旨在相互补充，以适应不同的应用场景。此外，用于生成模拟水温的空间和时间协变量已包含在属性表中，可通过 https://www.fs.usda.gov/rm/boise/AWAE/projects/NorWeST/ModeledStreamTemperatureScenarioMaps.shtml 访问。NorWeST NHDPlusV1 处理单元包括：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 和 Upper Green-North Platte。NorWeST NHDPlusV2 处理单元包括：Lahontan 盆地、北加利福尼亚-沿海 Klamath、犹他州、沿海加利福尼亚、加利福尼亚中部、科罗拉多州、新墨西哥州、亚利桑那州和黑山。本记录源自 USDA 企业数据目录，该目录输入至 https://data.gov 目录。本记录的数据包括以下资源：ISO-19139 元数据、ArcGIS Hub 数据集、ArcGIS GeoService、OGC WMS、CSV、Shapefile、GeoJSON 和 KML。欲获取完整信息，请访问 https://data.gov。