Saylorville: A ticking time bomb?
I'm not a hydrologist or meteorologist -- or even and engineer, but I can read a chart and I see an unusual and scary trend.
The river basins that feed Midwest rivers received up to 400% of normal precipitation throughout the fall and winter months. Couple that with below average temperatures, particularly in February, the stored water potential remained stagnate until the spring melt, and that contributed to record water levels in the Rock Island District. Water at the Saylorville Reservoir has elevated to levels far above those recorded in 2008 for the same period, and heading into the spring shower season.
In 2008, Saylorville had reached 840 ft by mid-March and had begun to fall. This year, we see reservoir levels 25-30 feet higher at mid-month and continue rising throughout the month, with an expected volume to reach capacity -- leaving no room for additional precipitation in the watershed without overwhelming flood control systems.
In both 2008 and 1993, Sayorville was a lot lower than it is today, yet we still saw record flooding in those years. In fact, the lake hasn't been anywhere near this high in the 33 years of historical data on the corps' website. Most years right where they like it, at about 836 ft.
That has to have local officials at least a little nervous. But I haven't heard anyone ask the question that begs asking: what will Saylorville look like in June if it reaches capacity by the end of March?
