You've probably seen the multi-layered, interactive map the National Oceanic and Atmospheric Administration developed for information about the oil spill at http://www.geoplatform.gov/gulfresponse/.
This morning, the Mississippi Department of Environmental Quality announced an interactive map on its web site. This map shows MDEQ water sampling results and locations. My link embed function doesn't want to work today, so here's the URL: http://opcgis.deq.state.ms.us/oilspillmap/
All the samples I clicked on said, "Oil range organics not detected."
The samples include regular monitoring and also results from reports of suspicious substances.
Oil was reported Sunday in the Bay of St. Louis, but an MDEQ spokesperson told me today that test results are not back. I can not understand why it would take 24 hours to tell if a substance is oil, but they say it does. Sure looked like oil in our Sun Herald photos.