Monday, April 10, 2006

Where's The Water Come From

The lake is technically a retention pond for run-off that originates along Clifton, Idlewild, Roberta and a few other streets as well, plus about a mile long stretch of Nebraska. Fortunately, nothing too gross seems to come off of Nebraska anymore thanks to the installation of a cylone system. This separates solid stuff... wood, most trash, bodies, car parts, etc from the flow of water arriving to float our ducks. About 10 years ago the City installed concrete ramps to minimize bank erosion associated with water flows which can really get going during a good storm. Recently the separator came online and began functioning. It is now the main discharge for flow from Nebraska into the lake. It's been turned over to Tampa Stormwater now and everyone has high hopes this thing does a great job. We might actually be getting a second one on the East side of the lake in the future. Erosion and/or water flow pertaining to residential lots is a problem Stormwater seems to be dealing with now.

Given the velocity of the water flow from Nebraska during heavy storms the City installed a barrier known as Rip Rap. This is often used with varying results to control erosion associated with water for river banks, beaches and stormwater pipes. Unfortunately, as you can see the last heavy storm blasted our rip rap apart. Basically the plan is you put down some cloth and cover it with rocks. The trick is getting the amount and size of the rocks correct. We are going to need a bit of an adjustment to our rock collection before the rains get too heavy or this is going to be demolished. You can read about rip rap and beavers here.

Once the lake fills to full the excess goes out the overflow into the Hillsborough River. Hopefully that is, otherwise we could flood. This is the outflow in the SW corner of the lake. It's pretty old
and in rough shape. This is where the grate needs to be installed to keep the alien mutant carp possessed in the lake. We don't want them to escape because even though they cannot reproduce, they might scare people by trying to mow their lawns for them when they get hungry. This actually looks more like a fireplace than a stormwater overflow to me, but what do I know. This advice is worth what you paid for it.

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