Thursday, 15 April 2021

Re: {Tidal Potomac Fly Rodders} I don't know much about tides...

This was probably obvious to most, but it took me a few years to figure out that at Fletchers, a high and incoming tide makes for a more gentle river, and a lower outgoing tide means faster flow.  

My mind kept connecting with higher tide = more water = faster river...but of course, the tide and the river are separate things at Fletchers.  The incoming high tide meets the outgoing river flow and they mix together and the opposing forces calm things down - which is why you can sometimes float up river when the tide is high.  During a low/outgoing tide, everything is flowing the same direction - towards the bay - so the river at low tide can be very fast and hard to paddle upstream.

On Thu, Apr 15, 2021 at 1:51 PM Kevin Brugman <klb6910@gmail.com> wrote:
I find it interesting to compare Tidal charts.  Following are 3 different sites for the Potomac in Washington DC and the Rappahannock in Fredericksburg.  All for morning High tide on 15 April

Tideschart.com
Washington DC - 10:57am
Fredericksburg VA -11:45am

Tide-Forcast.com
Washington DC - 11:22am
Fredericksburg VA -10:09am

Tideanddate.com
Washington DC - 11:00am
Fredericksburg VA -10:24am

Granted, these were slightly different locations, for example in DC one was Fletchers Boathouse, one was in Arlington and the other at Key Bridge.  I double checked the times, dates and locations for all three sites. 

I was surprised to see the large fluctuations as well as the difference in time between the Potomac and the Rappahannock.  I would have thought that they would have been closer.

Kevin

On 4/15/2021 12:45 PM, namfos wrote:
This site might help out when it counts when fishing...anywhere. 

This one's for Fletchers:

Mark
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