Photo from U.S. Geological Fact Sheet 168-97
Figure 3. Water speed from the dam to Lees Ferry has been measured at three dam releases and downstream from Lees Ferry at two releases. Water moves a little more slowly upstream from Lees Ferry than downstream. We can use the results to estimate the average water speed for a range of constant discharges. For example, the data indicate that at 30,000 ft3/s water would flow downstream from Lees Ferry at a little more than 3 mph. |