This is an example of an annual hydrograph, that is the mean (average) daily discharge flowing past the station each day at Schoharie Creek for the 1940 water year (Oct 1, 1939 – Sept. 30 1940). Each day of the year (on the x-axis) is numbered 1-365, Oct 1 is 1 and Sept 30 is 365. For each day the average discharge (measured in cubic metres per second, m3/s) is plotted as a bar. There are 1000 L in 1 m3 , and a litre (L) is about the size of most water bottles – Sigs, Nalgenes, etc.. If flow is 1 m3/s, that’s the same as all the water in 1000 Sig-type water bottles going past a point in ONE second! Looking at the hydrograph for 1940 on the Schoharie Creek, we see that the highest average flow for any given day was 549 m3/s. We can work out the total volume of water flowing past the station on that day by multiplying the average flow in a day by the number of seconds in a day (60 seconds/minute * 60 minutes/hour * 24 hours/day = 86,400 seconds → 47, 433, 600 m3 in one day!
Image 36350 is a 502 by 627 pixel WebP
Uploaded:
Dec13 12
