Today I introduced participants from a JICA irrigation and drainage course to the Takiya River field site. Our main exercise was to split into 4 teams and measure the discharge by different methods; (1) electromagnetic current meter with wading rod, (2) hand-held propellor meter, (3) bridge-suspended propellor meter, and (4) float method. The stage was 0.47 m, which is typical for the tail-end of the snowmelt season. Methods 1 and 4 gave a similar result of close to 1.32 m3/s, whereas the propellor meter methods gave somewhat higher estimates. Reasons for the differences are being investigated.
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| Hand-held propellor method |
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| Bridge-suspended propellor meter method |
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| Electromagnetic current meter method |
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| Float method |
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