Name

Soil properties: Shrink-swell potential

Description

Some soils swell upon wetting and shrink when dried, which creates unstable foundations for engineering and farming activities. High shrink-swell potential indicates soils that severely shrink and swell with wetting-drying cycles, and thus they are problematic over the long-term in regards to construction. Moderate shrink-swell soils are not as problematic, but they can be sticky when wet, which makes cultivation and engineering activities difficult. Linear extensibility, a property describing the change in soil volume upon wetting and drying, was used to describe soil shrink-swell potential and was compiled from the SSURGO database. Shrink-swell classes from the National Soil Survey Handbook were used to describe shrink-swell potential of Hawai‘i soils (Low < 3.0, Moderate = 3.0-5.9, High = 6.0-8.9, and Very High ≥ 9.0%).

Source

Hawaii Soil Atlas

Link to download data from source

Soil properties: Shrink-swell potential

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808 Planner

The Oʻahu Resource Conservation and Development Council (ORCD) in collaboration with the City and County of Honolulu’s Office of Economic Revitalization (CCH-OER) present practical strategies for the agricultural and forestry sectors to adapt to climate change and extreme weather events.

We’ve developed the “808 Planner” tool to fulfill a part of our shared mission. This interactive map allows users to draw an area of interest and quickly obtain a summary of environmental characteristics, such as: administrative boundaries, climate, elevation, hazards, land use, and soils.

This tool aims to assist:

  • Agricultural Extension Services
  • Farmers
  • Landowners
  • Researchers
  • The General Public