Happy New Year!! Here are some data figures that Mae Kate and I came up with at the end of the semester from our research. All of the data is from Hydrostation 55. The baseflow vs. sediment graph is my favorite. If you want to see more from Hydrostation 55, you can check out the poster from my (and Zanna's) final GIS project.
I hope everyone is having an enjoyable winter term.
All the best,
Fig. 1 shows an inverse relationship between slope and intercept through all the data that suggest there is no systematic change over sediment rating curves over time.
Fig. 2 shows that there is no trend between the total amount of sediment delivered per year and time. It is interesting to note that there are 3 distinct peaks that gradually decrease over time (1970, 1974, 1979).
Figure 3: Plot of baseflow vs. sediment in log-log space by month. Within any given month there appears to be a log-linear increase in baseflow versus sediment. There appears to be hysteresis in this data; note the loop shape (like a donut with sprinkles!) formed by the points, clustered by month. In the winter months, there is less baseflow and less sediment being transported. In the summer months there is high contribution of underground flow and a lot of sediment being transported out.
Figure 4: Plot of total flow vs. sediment in log-log space. There does not appear to be a relationship between months, but within any given month there appears to be a log-linear increase in total flow versus sediment. Note there is an indication of hysteresis within this data.
Figure 5: Plot of stormflow vs. sediment in log-log space. There does not appear to be a relationship between months, but within any given month there appears to be a log-linear increase in stormflow versus sediment. There may be hysteresis here, but it is difficult to tell with the large amount of scatter.