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Introduction
Since 2011, one experimental watershed in UTCBF, UTHF, UTCF, ERI and ARI has been operated as Category I. The water level of the stilling pool of the weir is continuously measured for runoff calculations. Rainwater and stream water samples are collected monthly on a certain date of a month and shipped to designated laboratories. For stream water samples, acidity (pH), electrical conductivity (EC), and seven ion concentrations (Na+, K+, Mg2+, Ca2+, NH4+, Cl-, NO3- and SO42-) are analyzed. For rainwater samples, pH, EC, and the seven ions plus NH4+ concentrations are analyzed. Daily precipitation, runoff, and monthly water quality data have been published annually as data papers in the UTF journal, under "Miscellaneous Information, The University of Tokyo Forests" and this website. Experimental watersheds other than Category I are ranked as Category II, and are maintained by each regional forest. However, daily rainfall and runoff, and monthly rainwater and stream water quality can be published together with the Category I data if each regional forest transfers the calculated products from the Category II data to ERI. |
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How to Use
Use of data is limited to research and educational purposes only.We refuse to use it for other uses.When using these data, you must cite all data papers corresponding to those data. |
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Contact us
Hydrology and Water Quality Division, Fundamental Data Development Committee, The University of Tokyo Forests Graduate School of Agricultural and Life Sciences,The University of Tokyo 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657 JAPAN E-mail: kishou-suimon_rep「at sign」uf.a.u-tokyo.ac.jp |
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Observation Equipment
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◆Hydrological data
◆Rainwater quality data
◆Stream water quality data
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