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OC Inlet, Assawoman Bay tides.

post #1 of 9
Thread Starter 
I've been reading some tide charts and there's a +2hr difference from the inlet hi to the bay high. This has always confused me over the few years I've been fishing there. Why a 2 hour delay to fill the bay? Where in the bay are they measuring.

According to a topo map I have the bay at it's deepest is only 6ft?
post #2 of 9
cant say where they measure it....but theres definately some much mdeeper parts than 6 feet. the channel gets much deeper than that. The delay is because it takes a while for all that water to get into the bay and raise the water levels while it has already crossed the inlet measuring point....and when its a receding / outgoing tide it takes a while for the bay to unload all its water...so it stays higher longer than the oceanfront....so its always behind the ocean and inlet measurements.
post #3 of 9
NOAA has 4 listed for OC

Station ID: 8570280 PUBLICATION DATE: 06/13/2003
Name: OCEAN CITY, FISHING PIER
MARYLAND
NOAA Chart: 12211 Latitude: 38° 19.6' N
USGS Quad: OCEAN CITY Longitude: 75° 5.0' W


To reach the tidal bench marks from the junction of the east end of the U.S.
Highway 50 bridge and Philadelphia Avenue in Ocean City, proceed south on
Philadelphia Avenue for 0.3 km (0.2 mi) to Wicomico Street, turn left onto
Wicomico Street and continue east to the Ocean City Fishing Pier. The bench
marks are near the pier, on Dorchester Street, and at the U.S. Coast Guard
Station. The tide gage and electric tape gage were at the offshore end of the
pier.

Station ID: 8570283 PUBLICATION DATE: 06/29/2011
Name: OCEAN CITY INLET
MARYLAND
NOAA Chart: 12211 Latitude: 38° 19.7' N
USGS Quad: OCEAN CITY Longitude: 75° 5.5' W


To reach the tidal bench marks from the east end of the US Highway 50 bridge and
Philadelphia Avenue in Ocean City, proceed south on Philadelphia Avenue for 0.5
km (0.3 mi) to the intersection with Worchester Street, turn right on Worchester
Street, then left into the US Coast Guard Station. The bench marks are located
on the grounds of the station. The tide gage was located on the westernmost
pier at the boat basin.

Station ID: 8570282 PUBLICATION DATE: 11/07/2003
Name: OCEAN CITY, ISLE OF WIGHT
MARYLAND
NOAA Chart: 12211 Latitude: 38° 19.9' N
USGS Quad: OCEAN CITY Longitude: 75° 5.4' W


To reach the tidal bench marks from the intersection of the Route 50 Bridge
(continued) and Philadelphia Avenue proceed south along Philadelphia Avenue to
Talbot Street then east (turn right) along Talbot Street to Isle of Wright Bay.
The bench marks are located in the vacinity of Talbot Bunting Marina. The tide
gage and staff were located at the Talbot Bunting Marina on the pier closest to
the south side of Talbot Street on Isle of Wright Bay.

Station ID: 8570255 SUPERCEDED DATE: 04/21/2003
Name: 9TH STREET, OCEAN CITY, ISLE OF WIGHT BAY
MARYLAND
NOAA Chart: 12211 Latitude: 38° 20.5' N
USGS Quad: OCEAN CITY Longitude: 75° 5.1' W


To reach the tidal bench marks in Ocean City from the intersection of Route 50
and Philadelphia Avenue, proceed north on Philadelphia Avenue to the
intersection of Philadelphia Avenue and 9th Street, turn left (east) onto 9th
Street to the intersection of 9th Street and Edgewater Avenue. The tide gage
and staff were located on the most southerly wooden pier on the western edge of
the property at 901 Edgewater Avenue, just north of 9th Street.

I know thats sorta not what you asked, but I thought I'd throw that out there. As you get further from the ocean the longer it takes for the tide to swing. There is alot of water all moving at once, and while it may be slack tide in the ocean it won't be in the bay until all that water stops and changes direction. Often times the tide has actually changed and the water level may still be doing the opposite of what the tide should be. Sometimes its still coming in but yet the water level is dropping. Sometimes depending on how fast the water is moving it might be slack on the top and near the bottom its still moving in or out.
post #4 of 9
Quote:
Originally Posted by Paranoid View Post

I've been reading some tide charts and there's a +2hr difference from the inlet hi to the bay high. This has always confused me over the few years I've been fishing there. Why a 2 hour delay to fill the bay? Where in the bay are they measuring.

According to a topo map I have the bay at it's deepest is only 6ft?

What the others said is accurate. Basically, if it says "Ocean City Fishing Pier", that's the pier that sticks out into the ocean. If it says "Ocean City Inlet", that's the inlet. If it says anything "bay", that's The Rt. 50 bridge and north (and south) and it takes a little more than two hours the further you go.

There are depths of 30+ feet in some spots, but there are no real vast channels or anything where the depth is more than 20 or 30 feet for any great distance. The East Channel is the longest strip of deep water.
post #5 of 9
;[quote ...... As you get further from the ocean the longer it takes for the tide to swing. There is alot of water all moving at once, and while it may be slack tide in the ocean it won't be in the bay until all that water stops and changes direction. Often times the tide has actually changed and the water level may still be doing the opposite of what the tide should be. Sometimes its still coming in but yet the water level is dropping. Sometimes depending on how fast the water is moving it might be slack on the top and near the bottom its still moving in or out.

[/quote]


......FWIW and just to add my .02 worth to this and to the qoute above and all everyone alse said, add to all that the effects of wind and moon phases on the tides and current.... and best of luck to us all tryng to predict exaclty what tidal flow will be doing in any given half hour to full hour period in any given location in the OC bay/inlet area. After hundreds of flounder and striper boat (mostly headboat) excusions over the last 10-15 years around OC, and being aware of the predicted tides, I've about given up on trying to "time" the tidal flow other than very generally following the tide charts. Can't ignore the predicted tides of course, but IMO, just when you think you've got it figured out, the tides/current will do things you did not expect. And I say that not as an expert on the issue, but as someone who has gone out with and talked to a lot of very exprerienced OC captains who as good as they are, can be perplexed by the tides more often than you might think.

Tide charts are a great tool, and should be considered as part of planning any tidal water fishing trip, but they aint perfect, and you need to be as flexible as possible to change fishing locations based upon what you experience when you get out there, especially for drift fishing for flounder for example.

That said, I have not exactly been bailing the flatties this year.....so what do I know...maybe next week I'll catch a few....boss finally gave me a few days off!! wink.gif
Edited by Beachfish - 7/20/11 at 8:24pm
post #6 of 9
I find that if I add three hours to the times in the Coastal Fisherman tide tables, it gets me to when the current stops, and changes direction.

That is for the OC inlet.
post #7 of 9
are you talking about the oc inlet derrick identified near the coast guard station? 3 hours seems like a lot since they call for two hours at rt 50 bridge. you all would certainly know better than us part timers. just asking because ive not watched a tide change from the cg station
Edited by wvbud22 - 7/23/11 at 9:00pm
post #8 of 9
I am talking about the current stopping, and starting back the other direction.
The tide might be at its highest, or lowest before that, but the water does not start flowing for 3 hours after the published time.
Tide is the vertical movement of the water.
Current is the horizontal movement of the water.
post #9 of 9
i see. thought they both happened together but it makes sense since you explained it. thanks
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