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Régions: North Slave Region, South Slave Region

étiquettes: physical sciences, water quality, hydrology

Description du projet: The hydrometric program for 2006 will be a continuation of the program from 2005, which focussed on wildlife and wildlife habitat surveys, water quality sampling and hydrological monitoring at Matthews Creek. The program will be based on four site visits over the summer. The stage-discharge observations will be conducted on a single creek transect that was established in 2005. The first site visit will occur shortly after spring thaw and will involve the re-installation of creek stage monitoring instrumentation, which will collect and store river stages at a frequency of four readings per hour. During this site visit, creek discharges measured by means of velocity area calculations in conjunction with creek stage elevations, will be collected at least twice per day. This data will be used to determine stage-discharge relationship. The spring thaw flows will likely be the highest flows recorded for the creek for the year and will produce data defining the high flow end of the stage-discharge relationship. When completed, this stage-discharge relationship enables the creek stage data, stored every 15 minutes by the data logger, to be converted to creek discharges, which allows for a chronology of flows to be plotted. It is estimated that two days on site will be sufficient time to complete the tasks for the first site visit. Two site visits during the summer will be conducted to collect further stage discharge data, which will fill in the middle range of discharges on the curve of the stage discharge relationship. The stage data logger will be downloaded and an inspection of the instrument will be conducted. It is estimated that two days on site will be sufficient time to complete the tasks for the second and third site visit. The fourth and final site visit for the year would occur in the fall just before the creek freezes. Low flow stage discharge data will be collected to complete the stage discharge curve relationship. The pressure transducer and data logger will be removed at this time to prevent damage to the instrumentation due to freezing conditions. Two days have been allotted for the completion of tasks for the fourth site visit. At the conclusion of the field program, a brief report will be submitted to the community organizations summarizing Matthews Creek flow stages and discharges, including creek discharge histories and the generated stage discharge curve. The study will be conducted at Matthews Creek (64° 6’10.6’’ 111° 15’ 32.8”) from June 5 to October 21, 2006.