Beach House Spectacular: Jersey's Dirty Waters
When the rain comes down like it has been on the East Coast, the ocean is likely to get a dump of sewage and other stormwater run-off. But it wouldn't be a Jersey Shore Summer if the beaches weren't closed because of excess fecal matter or elevated bacteria levels. (To be fair, this happens quite a lot in California too.)
You can check which beaches are closed at NJ Beaches. Today's report says:
Brown and York Avenue beaches in Spring Lake and The Terrace beach in Sea Girt are closed today as a precaution due to recent rainfall and the resulting stormwater discharge from Wreck Pond. All other lifeguarded ocean beaches are open.
If you want to learn more about what's in the water ("Know before you go") then Earth 911 is the official beach and water monitoring service for the Jersey Shore. There's even a nifty Google Mash-Up (pictured) for each monitoring station so you should always be informed.