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The original item was published from 4/29/2020 3:32:07 PM to 4/30/2020 12:00:04 AM.

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Economic Development Announcements

Posted on: April 29, 2020

[ARCHIVED] Potential Downtown Flooding - This Evening Into Friday Morning

Business located near the City Dock should be prepared for potential flooding.  

The Annapolis Office of Emergency Management (OEM) is monitoring the approaching heavy rainfall and extreme coastal flooding that may affect the Annapolis area later this evening into Friday morning.

Water level could remain at or above Moderate Flood stage for a number of hours on Thursday, before slowly subsiding on Friday. 

Minor coastal flooding occurred today during high tide at 10:40 AM and could also occur beginning around high tide at 10:50 PM this evening and potentially continue through early Friday. This means water levels will likely be above 2.6 ft above MLLW (even during low tide) throughout the day on Thursday. However, the biggest concern is during high tides with water levels expected to surge well into the Moderate Flood Stage (> 3.3 ft above MLLW). During tomorrow’s high tide around 11:35 AM, water levels between 4.0 and 4.5 ft above MLLW are forecasted. During the evening high tide at 11:56 PM, water levels between 3.3 and 3.6 ft above MLLW are forecasted. Given the anomalously high rainfall totals over the last 10 days, this could result in both aerial flooding and flash flooding. 

What does this mean? 

At 3.5 feet, water reaches the floor of the Maritime Museum in Annapolis, begins to cover Bowyer Road on the Naval Academy campus, and numerous businesses on Dock Street are flooded, along with the City Dock parking lot. At 4.2 feet, the boardwalk at Annapolis City Dock is underwater. Floodwaters also are affecting numerous roads in Annapolis and on the Naval Academy Campus, along with structures throughout the neighboring area. Higher levels of flooding may impact Compromise St and Newman St. There could be a possibility of temporary road closures and alternate traffic patterns in affected areas. The potentially coincident timing of the heavy rainfall and coastal flooding could create groundwater, runoff, and drainage issues. 

Please use caution in the area.

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