Contours_East

10 foot interval, elevation contours of the Napa River non-watershed area. The area covered by this data is referred to as the non-watershed Area because it lies outside the Napa River Watershed. The contours were mapped at a scale of 1"=400ft and meet National Map Accuracy standards at this scale. The vertical datum for the contours is NAVD88. Produced during the 2002/2003 Orthophotography Project.本数据集为等高距10英尺的纳帕河非流域区域高程等高线。该数据覆盖的区域被称为非流域区域，因其地处纳帕河流域范围之外。此等高线以1英寸=400英尺的比例尺测绘，并符合该比例尺下的国家地图精度标准（National Map Accuracy Standards）。该等高线采用的垂直基准面为NAVD88。本数据集于2002/2003年正射摄影项目期间制作完成。