Available Tide Stations and Accepted Datums ---------------------------------------------------------------------------- 8637624 GLOUCESTER POINT, VA 37 14.8N 76 30.0W 8638610 HAMPTON ROADS, VA (Sewell's Point) - - 8638863 CHESAPEAKE BAY BRIDGE TUNNEL, VA 36 58.0N 76 6.8W 8635150 COLONIAL BEACH, POTOMAC RIVER, VA 38 15.1N 76 57.6W 8632200 KIPTOPEKE BEACH, VA 37 10.0N 75 59.3W 8635750 LEWISETTA, POTOMAC RIVER, VA 37 59.8N 76 27.8W ----------------------------------------------------------------------------- ACCEPTED STATION DATUMS FOR 1960-1978 Heights are in meters above Station Datum Station -- Unique seven character identifier for the station Highest -- Highest Water MHHW -- Mean Higher High Water MHW -- Mean High Water MSL -- Mean Sea Level MTL -- Mean Tide Level MLW -- Mean Low Water MLLW -- Mean Lower Low Water Lowest -- Lowest Water HWI -- Greenwich Mean High Water Interval in Hours LWI -- Greenwich Mean Low Water Interval in Hours Station Highest MHHW MHW MSL MTL MLW MLLW Lowest HWI LWI ------- ------- ------ ------ ------ ------ ------ ------ ------ ------ ------ 8631044 1.984 1.890 1.295 1.259 0.628 0.582 1.080 7.100 8638610 2.076 2.012 1.643 1.637 1.259 1.222 1.630 7.910 8637624 1.219 1.174 0.805 0.808 0.439 0.387 1.820 8.040 8638863 8.483 8.413 8.025 8.016 7.620 7.583 0.700 6.880 8635150 1.326 1.256 1.003 1.003 0.750 0.725 7.290 1.300 8635750 1.841 1.795 1.612 1.603 1.408 1.375 6.180 0.060 8632200 1.926 1.856 1.448 1.448 1.039 1.003 0.990 7.410