State Park Lesson Plans - Tidal Conversion Figures

Tidal Conversion Figures

Park Designated Reference Station* Average Time Difference
(Hrs, Mins) from Sewell's Pt.,
Hampton Roads**

High Water Low Water

Chippokes Scotland (James River) +2.44 +3.15

First Landing/Seashore

Ches. Bay beach Cape Henry -0.52 -1.15

Broad Bay Lynnhaven Inlet -0.13 +0.01

York River Allmondsville (York River) +0.55 +0.57

Park Designated Reference Station* Average Time Difference
(Hrs, Mins) from Washington, DC**

High Water Low Water

Caledon Riverside, MD (Potomac River) +3.35 +4.19

Leesylvania Quantico Creek, VA (Potomac) -1.04 -1.59

Mason Neck High Point, Occoquan Bay, VA (Potomac) -1.02 -1.28

Westmoreland Colonial Beach, VA (Potomac) -5.27 -6.12

Park	Designated Reference Station*	Average Time Difference (Hrs, Mins) from Sewell's Pt., Hampton Roads**
High Water	Low Water
Chippokes	Scotland (James River)	+2.44	+3.15
First Landing/Seashore
Ches. Bay beach	Cape Henry	-0.52	-1.15
Broad Bay	Lynnhaven Inlet	-0.13	+0.01
York River	Allmondsville (York River)	+0.55	+0.57

Park	Designated Reference Station*	Average Time Difference (Hrs, Mins) from Washington, DC**
High Water	Low Water
Caledon	Riverside, MD (Potomac River)	+3.35	+4.19
Leesylvania	Quantico Creek, VA (Potomac)	-1.04	-1.59
Mason Neck	High Point, Occoquan Bay, VA (Potomac)	-1.02	-1.28
Westmoreland	Colonial Beach, VA (Potomac)	-5.27	-6.12

* Nearest landmark with published tides on which conversion figures are based; actual times of tides at parks may be slightly different.
** Hampton Roads times from Tide Graphs; Washington, DC times from TideLogs. Slight discrepancies may exist between the references.