The BLM OR Water Map Service represents area, flowline, point and waterbody features from the US Geologic Survey (USGS) High Resolution National Hydrography Dataset (NHD) within Oregon and Washington. NHD Area features show polygon representations of oceans, rivers, rapids, etc. NHD Flowline features are linear depictions of streams and centerlines of rivers. NHD point features include springs, seeps, wells, etc. NHD waterbody features include polygons depicting Lake/Ponds, swamp/marsh, estuaries, etc. Additional attributes have been added from the BLM Aquatic Resources Information Management System (ARIMS).

The BLM OR Water Map Service is a cached Map Service. Due to the infrequent updates to the base data, the cache will be refreshed as needed. The BLM OR Water Map Service is created from hydrography_publication.gdb\hyd_pub_point, hyd_pub_flowline, hyd_pub_waterbody, and hyd_pub_area. This map service has scale dependencies. Hydrographic Water Body Features are visible at a scale in beyond 1:300,001. Hydrographic Line Feature Periodicity and Hydrographic Point Features are visible at a scale in beyond 1:250,001. Hydrographic Polygon Feature Types are visible at all scales. Labels for Hydrographic Point Features are visible at a scale in beyond 1:200,001. Labels for Hydrographic Polygon Feature Types, Hydrographic Water Body Features, and Hydrographic Line Feature Periodicity are visible at a scale in beyond 1:125,001.

The BLM OR Water Map Service represents area, flowline, point and waterbody features from the US Geologic Survey (USGS) High Resolution National Hydrography Dataset (NHD) within Oregon and Washington. NHD Area features show polygon representations of oceans, rivers, rapids, etc. NHD Flowline features are linear depictions of streams and centerlines of rivers. NHD point features include springs, seeps, wells, etc. NHD waterbody features include polygons depicting Lake/Ponds, swamp/marsh, estuaries, etc. Additional attributes have been added from the BLM Aquatic Resources Information Management System (ARIMS).

The BLM OR Water Map Service is a cached Map Service. Due to the infrequent updates to the base data, the cache will be refreshed as needed. The BLM OR Water Map Service is created from hydrography_publication.gdb\hyd_pub_point, hyd_pub_flowline, hyd_pub_waterbody, and hyd_pub_area. This map service has scale dependencies. Hydrographic Water Body Features are visible at a scale in beyond 1:300,001. Hydrographic Line Feature Periodicity and Hydrographic Point Features are visible at a scale in beyond 1:250,001. Hydrographic Polygon Feature Types are visible at all scales. Labels for Hydrographic Point Features are visible at a scale in beyond 1:200,001. Labels for Hydrographic Polygon Feature Types, Hydrographic Water Body Features, and Hydrographic Line Feature Periodicity are visible at a scale in beyond 1:125,001.