数据集 - California Open Data

National Hydrography Data - NHD and 3DHP

The USGS National Hydrography Dataset (NHD) Downloadable Data Collection from The National Map (TNM) is a comprehensive set of digital spatial data that encodes information...
- PDF
- ZIP
- Website
- ArcGIS GeoServices REST API
- CSV

您也可以使用应用程式界面 (看 API文献)注册.