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Oxygen isn’t important only for air-breathing land animals; fish and other in-water residents need sufficient oxygen in the water—“dissolved oxygen”—to survive.

The upper Chesapeake Bay experienced record-low salinity levels following near-record discharge from the Susquehanna River this spring.

Good news for buoy data users! The Susquehanna and Patapsco CBIBS buoys have been redeployed for the summer season and are once again reporting data from their locations off Havre de Grace, Maryland, near Susquehanna Flats and at the mouth of the Patapsco River near Baltimore.

Thanks to the U.S. Coast Guard Baltimore Aids to Navigation Team for making the redeployment happen!

Buoy updates: The Upper Potomac and Potomac/Point Lookout buoys are back on station and reporting data. The Annapolis buoy's computer received an update and should be reporting extreme (high and low) wind speeds more accurately. And finally, the water-quality sensor on the Dominion Gooses Reef buoy is back up and reporting.

Early spring is usually when the CBIBS buoys that have been pulled for the winter (to avoid ice damage) are redeployed. But this year, for now, NOAA has put these redeployments—and the planned deployment of a new tenth buoy at the mouth of the Bay—on hold.

Near Washington, D.C., and want to talk buoys and other observing systems? Join CBIBS project manager Doug Wilson in the "Scientist Is In" program at the Smithsonian's Sant Ocean Hall this Wednesday, April 20, 1-3 p.m. Stop on by to talk about how buoys and other observing systems work, and how all that data is transmitted and used. Hope you can join us!

NCBO’s educational “Build-a-Buoy” project was featured on FOX 5 DC the morning of Monday, February 7, as part of their coverage of NOAA Heritage Week.

Roughly 2 million fish have turned up dead in the middle part of the Bay, and state of Maryland scientists are investigating. Their working theory is that the fish died due to cold water stress.

CBIBS buoys are built to withstand high winds and big waves—but some forces of nature are too much for the sensors attached to the buoys. Ice can damage these sensors, and large ice floes can even "relocate" buoys.

The Dominion Gooses Reef CBIBS buoy is the first location in the system to also include the capability to monitor water quality at the Bay bottom.