Extreme Water Level Stations

Extreme Water Level Stations This feature layer, utilizing National Geospatial Data Asset (NGDA) data from the National Oceanic and Atmospheric Administration, displays the Center for Operational Oceanographic Products and Services (CO-OPS) locations and values of extreme water levels at the 1%, 10%, 50%, and 99% probabilities at CO-OPS water level stations. According to NOAA, "Exceedance probability, the likelihood that water levels will exceed a given elevation, is based on a statistical analysis of historic values. This product provides annual exceedance probability levels for select CO-OPS water level stations with at least 30 years of data." Yakutat, Yakutat Bay (ID: 9453220) & Sitka (9451600) Data currency: This cached Esri federal service is checked weekly for updates from its enterprise federal source (Extreme Waterlevel Stations) and will support mapping, analysis, data exports and OGC API – Feature access. NGDAID: 178 (Sea Level Trends: Sea Level Variations of the United States Derived from National Water Level Observation Network Stations) OGC API Features Link: (Extreme Water Level Stations - OGC Features) copy this link to embed it in OGC Compliant viewers For more information: Extreme Water Levels; Tides & Currents Products For feedback please contact: [e-mail] NGDA Data Set This data set is part of the NGDA Water - Oceans & Coast Theme Community. Per the Federal Geospatial Data Committee (FGDC), Water - Oceans & Coast is defined as "features and characteristics of salt water bodies (i.e. tides, tidal waves, coastal information, reefs) and features and characteristics that represent the intersection of the land with the water surface (i.e. shorelines), the lines from which the territorial sea and other maritime zones are measured (i.e. baseline maritime) and lands covered by water at any stage of the tide (i.e. Outer Continental Shelf ), as distinguished from tidelands, which are attached to the mainland or an island and cover and uncover with the tide." For other NGDA Content: Esri Federal Datasets极端水位站（Extreme Water Level Stations） 本要素图层采用美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration，缩写NOAA）的国家地理空间数据资产（National Geospatial Data Asset，缩写NGDA）数据，展示了美国海洋产品与服务运营中心（Center for Operational Oceanographic Products and Services，缩写CO-OPS）所辖水位站的位置，以及对应1%、10%、50%、99%超越概率下的极端水位数值。 据NOAA官方说明，超越概率指水位超过某一给定高程的可能性，其计算基于历史水位数据的统计分析。本数据集为至少拥有30年观测数据的筛选后CO-OPS水位站提供年度超越概率水位值。 亚库塔特湾亚库塔特站（ID：9453220）与锡特卡站（ID：9451600） 数据时效性：本缓存的Esri联邦服务每周会从其企业级联邦数据源（Extreme Waterlevel Stations）检查更新，支持制图、分析、数据导出以及OGC要素服务API（OGC API – Feature）访问。 NGDA编号：178（海平面趋势：基于美国国家水位观测网站点得出的美国海平面变化） OGC要素服务API链接：（极端水位站-OGC要素服务），请复制该链接以嵌入至兼容OGC标准的可视化工具中。 更多信息：极端水位；潮汐与海流产品 如需反馈，请联系：[e-mail] 本数据集隶属于NGDA水体-海洋与海岸主题社区。根据美国联邦地理数据委员会（Federal Geospatial Data Committee，缩写FGDC）的定义，水体-海洋与海岸范畴涵盖：咸水水体的要素与特征（如潮汐、潮波、海岸信息、珊瑚礁），以及陆地与水面交界面的要素与特征（如海岸线、用于测量领海及其他海洋区域的海洋基线，以及任何潮汐阶段被海水覆盖的陆地（即外大陆架）），该范畴与依附于大陆或岛屿、随潮汐周期性露出与淹没的潮间带相区别。 其他NGDA相关内容：Esri联邦数据集