Notice: We are experiencing a wide spread communication outage affecting the availability of water level and meteorological data for some of our stations, as well as several critical bridge clearance measurements. We are diligently working to resolve this data outage. Please direct all questions to email@example.com or call (301) 713-2815.
DISCLAIMER: The air gap measurements have been updated to reflect the ongoing construction on the I-210 Bridge. The real-time air gap data displayed on CO-OPS' web page now represents the distance from the bottom of the Safespan scaffolding to the water surface, at the center of the navigation channel.