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What is the FFPRI Forest Experimental Watershed Database?
  Part of the precipitation falling on forested areas moves into the atmosphere as evaporation from the leaves, branches and stems which catch rain or snow, or through transpiration via soil and roots. The other part passes through the surface and ground, flows into rivers, and the leaves the forest.The water balance between the water entering and leaving a forested watershed fluctuates over time, and is affected by forest conditions such as vegetation species and tree size, and by weather conditions.

  Therefore, the Forestry and Forest Products Research Institute (FFPRI) is continuing to monitor the water balance in five forested areas of Japan to clarify the relationship between forest conditions and water balance. The observation data has been published in print in a timely fashion, as well as utilized for research. This database provides the observation data already published in print as electronic files.

To use the data...

  • To use or download the data in the FFPRI Forest Experimental Watershed Database, the user must consent to the Terms of Use.
  • Please refer the Usage Guide page for information on how to download data.

Experimental watershed information

If you click on the name of an experimental watershed, you will jump to the page introducing that watershed.

Jozankei Kamabuchi Takaragawa Tatsunokuchi-yama Sarukawa