The Pittsburgh Parks Conservancy is holding a lecture about how water moves through Schenley Park. While I won't be at this lecture, lots of good people will be, and it should be extremely interesting. The lecture is on April 27 - click here for more info.
Meanwhile, in northwestern Vermont and northeastern New York State, Lake Champlain has risen above flood stage. A storm is going to bring more rain, and perhaps worse, wind that will whip up the lake and cause more erosion and flooding, especially on south-facing shorelines (of which there are not very many). The next week looks to be rainy so the lake will probably remain above flood stage for a while.