During the second field visit, May 30th to June 2nd, Ashley installed a low-impact v-notch weir into the main spring above the soaking pools at Sloquet. The purpose of installing the weir is to collect data on water levels through time to calculate spring flow rates, as mentioned in section 3.1.4. The weir was constructed from a sheet of aluminum that was cut to the dimensions of the creek and the v-notch angle (θ) water determined through trial and error (Figure 6). The weir was installed ten separate times with θ values ranging from 30°- 50°. Angles under 50° seemed to create too much pooling in the creek that did not represent the natural system that existed prior to installation. To minimize seepage, pond liner was bolted and fastened to the sheet of aluminum with silicon sealant to fill small openings on the weir. Once finalized, the weir was installed into the creek with one Solinst levelogger and Thermochron iButton. Data will be collected once the system equilibrates to the installation and flow rates will be calculated.
0 Comments
Leave a Reply. |
Archives
November 2019
Categories |