Sunday, June 20, 2010

Storm Aftermath

Over the first week of June, as mentioned in the previous post, there were heavy rains around Pittsburgh. Over 3 inches fell between June 1 and June 5, with most of that in a few hours in two big thunderstorms. After the storms had passed, I went to Schenley Park to check out the effects of the heavy rains of the last week. There had been some fairly dramatic runoff and flooding during this time.

Delta After Storm
I took a picture of this 'delta' into Panther Hollow Lake before the storms and again after. It looks smaller in the second picture because the lake level is higher. The lake had filled up well beyond its banks and almost overflowed.

Muddy Lake
When I was at the lake, the water level had dropped to near normal but was still extremely muddy. These photos are a clear demonstration of one of the problems facing this small park watershed - upstream erosion causing siltation in this lake. At some point rather soon, the lake will either have to be dredged, which is expensive, or will stop being a lake, which means people won't be able to enjoy it anymore.

Eroded Bridge
This bridge was washed out before this storm, but additional noticeable erosion had occurred during the rains.

Building From Park
The park is pretty!

Another item of note: the atmosphere may be transitioning from El Nino to La Nina conditions. This could mean that next winter in Vermont will be much colder and icier than last winter (it may actually snow less - last winter was pretty snowy - but the snow is more likely to stick around). This would also mean a likelihood of a drier than average rainfall season in much of California. We'll see!

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