Preliminary results of time-of-travel measurements on Wind/Bighorn River from Boysen Dam to Greybull, Wyoming

TL;DRAbstract

This report contains basic data regarding the traveltime and* dispersion characteristics of the Wind/Bighorn River, Wyoming, determined by dye-tracing techniques for two different river discharges. The study reach extended 112.7 river miles from Boysen Dam to Greybull. The discharge from Boysen Reservoir was 1,940 cfs (cubic feet per second) during the first measurement in March 1971 and 8,280 cfs during the second measurement in June 1971. A small quantity of a fluorescent dye, Rhodamine WT, was poured into the river downstream from Boysen Dam. The movement of the dye cloud was monitored by collecting water samples at frequent time intervals during passage of the dye at seven downstream sites. Traveltime of the peak dye concentration through the study reach was 56,00 hour" in March and 33.08 hours in June.

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