Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This data shows stormwater structures for the City of Tumwater (catch basins, manholes, treatment structures, outlets, etc...). Most of the structures are owned and maintained by the City. There are some private storm facilitieis shown in this layer and they are labeled as private. This layer is in development and any information shown on it should be field verified as needed. Please note that some of the data fields are not filled out and that has been done on purpose. Those fields will likely be removed in the near future.</SPAN></P><P><SPAN>Most of the structures in this layer were mapped with a GPS in the field. Structures mapped in 2014 or later were mapped with a Trimble GeoXH 6000 series GPS unit and all data collected with this unit was post-processed in Trimble's Pathfinder Office software using the Tumwater GPS base station for corrections. Most of the storm structures are mapped to a horizontal accuracy of roughly 1-2 ft. </SPAN><SPAN>Any Rim Elevations shot with the Trimble GeoXH 6000 should only be considered a close estimate. The Rim Elevations could be off by 1-2 feet. Structures mapped before 2014 were mapped with survey grade Trimble GPS unit.</SPAN></P><P><SPAN>In February 2016 the stormwater data from Thurston County was imported / integrated into this layer. Most of the County's data was mapped to survey grade accuracy by Tetra Tech in 2011-2014.</SPAN></P><P><SPAN /></P></DIV></DIV></DIV>
Service Item Id: 1b19bd00f44c4842b8049420f8306dc7
Copyright Text: City of Tumwater Public Works Department