Saturday, May 3, 2008

Huge Drop-Off In Volume

Things seem to have came to a screeching halt on Sunday, April 27th.

If you look at the spreadsheet with the numbers for the run [the link at the right at 'Monitor the progress of the run'], you'll see that the counts at Mill Pond Station dropped from 100's a day to almost none, and then with a small pickup in volume a couple of days later.

This could be due heavy rainfall and cool temps we've had. I've been looking at historical patterns on these points to see if there is any correlation to that and this year volumes and in prior years as well. If you're interested, the site Weather Underground maintains some very detailed statistics - see Cape Cod Airfield's numbers.

I've also done some work on the velocity of the water traveling through the pipe under Route 28. The students at Barnstable Horace Mann Charter School did some work on this last year and the concern is that this could be an impediment to the migration. This velocity increases significantly during periods of heavy precipitation.

We'll see what the next few days tell us...

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