Data Sources

HydroData Data Repositories

HydroData offers access to 17 data sources. Details can be found at the following:

Gridded Data

• The USDA Cropland Layer Dataset from 1997:2017 when/where available
• The USGS National Elevation Dataset (NED) elevation data at 1 and 1/3 arc-second
• The Daymet V3 gridded and point estimates of daily weather parameters
• The National Land Cover Database (NLCD) from 2001, 2006, and 2011
• The PRISM monthly and Annual Normal Datasets from Oregon State
• The Koppen Climate Classifation Dataset

Vector Data

• The USGS GAGESII dataset
• The USGS National Hydrography Flowline Network (NHD)
• The USGS National Hydrography Waterbody Network (NHD)
• The USGS Network-Linked Data Index
• The US Army Corps National Dam Inventory
• The Watershed Boundary Dataset at all levels from 2 to 12
• The TIGER road network dataset
• The USGS Water Use Dataset for 2005, 2010, and 2015

Observation Station Networks

• The USGS National Water Information System (NWIS) stream gages
• The Global Historical Climatology Network (GHCN),
• The SNOTEL station inventory
• The Openflights Airport Database
• The Applied Climate Information System
• The Automated Surface Observing System
• The NOAA Normals
• The U.S. Climate Reference Network