Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Select Conservation Practices (CPRAC) for 2012

This metadata record describes 7 conservation practice based on information from the National Resource Conservation Service (NASS) (Michael Schwartz, USGS, written...本元数据记录基于美国自然资源保护服务（National Resource Conservation Service, NASS）的相关信息，阐述了7项保护实践，相关资料由美国地质调查局（United States Geological Survey, USGS）的迈克尔·施瓦茨撰写……