Skip to main content

Hydrologic Derivatives for Modeling and Applications (HDMA) database


Publication Date
Time Period


Verdin, K.L., 2017, Hydrologic Derivatives for Modeling and Applications (HDMA) database: U.S. Geological Survey data release,


The Hydrologic Derivatives for Modeling and Analysis (HDMA) database provides comprehensive and consistent global coverage of raster and vector topographically derived layers. The HDMA includes five raster layers: digital elevation model (DEM) data, flow direction, flow accumulation, slope, and compound topographic index (CTI); and three vector layers: streams, catchment boundaries, and processing units. The coverage of the data is global (-180º, 180º, -90º, 90º) with the underlying DEM being a hybrid of three datasets: HydroSHEDS (Hydrological data and maps based on SHuttle Elevation Derivatives at multiple Scales), Global Multi-resolution Terrain Elevation Data 2010 (GMTED2010) and the Shuttle Radar Topography Mission (SRTM). For [...]

Child Items (7)


Point of Contact :
Kristine L Verdin
Originator :
Kristine L Verdin
Metadata Contact :
Kristine L Verdin
Distributor :
U.S. Geological Survey - ScienceBase
USGS Mission Area :
Water Resources
SDC Data Owner :
Colorado Water Science Center

Attached Files

Click on title to download individual files attached to this item.

overview.jpg thumbnail 324.47 KB image/jpeg


The HDMA dataset was developed to provide consistent, topographically-derived layers for use in continental-scale modeling effort. The Pfafstetter codes provide topological information that can be useful for upstream and downstream tracing. The HDMA database was developed by the U.S. Geological Survey in cooperation with NASA Goddard Space Flight Center.
Preview Image


Spatial Services

ScienceBase WMS


  • USGS Colorado Water Science Center
  • USGS Data Release Products



Data source
Input directly

Additional Information


Type Scheme Key
DOI doi:10.5066/F7S180ZP

Item Actions

View Item as ...

Save Item as ...

View Item...