39-m Resolution Stream Power Index

Stream power index (SI) takes into account both a local slope geometry and site location in the landscape combining data on slope gradient and catchment area.

Stream power index can be used to describe potential flow erosion at the given point of the topographic surface. As catchment area and slope gradient increase, the amount of water contributed by upslope areas and the velocity of water flow increase, hence stream power index and erosion risk increase.

Stream power index controls potential erosive power of overland flows, thickness of soil horizons, organic matter, pH, silt and sand content, plant cover distribution.

Data and Resources

Field Value
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • ckan
  • geo
  • geoss
  • national
  • north-america
  • united-states
isopen False
license_id notspecified
license_title License not specified
maintainer NPS IRMA Help
maintainer_email irma@nps.gov
metadata_created 2025-11-30T06:11:39.370412
metadata_modified 2025-11-30T06:11:39.370417
notes Stream power index (SI) takes into account both a local slope geometry and site location in the landscape combining data on slope gradient and catchment area. Stream power index can be used to describe potential flow erosion at the given point of the topographic surface. As catchment area and slope gradient increase, the amount of water contributed by upslope areas and the velocity of water flow increase, hence stream power index and erosion risk increase. Stream power index controls potential erosive power of overland flows, thickness of soil horizons, organic matter, pH, silt and sand content, plant cover distribution.
num_resources 1
num_tags 8
title 39-m Resolution Stream Power Index