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Tidal Station Locations and Ranges
Alaska Peninsula Mean Spring Mean Tide 
Range Range Level
Predictions Station Latitude Longitude (ft) (ft) (ft)
Predictions Nukshak Island, Shelikof Strait 58° 23.5' 153°57.5' 11.42 13.82 7.32
Predictions Kukak, Kukak Bay 58° 20' 154°7' 11.1 13.3 6.9
Predictions Aguchik Island, Kukak Bay 58° 17.4' 154°16.2' 11.35 13.76 7.27
Predictions Takli Island, Shelikof Strait 58° 03.8' 154°28.6' 10.95 13.59 7.18
Predictions Katmai Bay, Shelikof Strait 58° 0' 154°59' 10.5 12.8 6.6
Predictions Puale Bay 57° 42' 155°23' 9.8 12.1 6.4
Predictions Kanatak Lagoon, Portage Bay 57° 31' 156°4' 9.5 11.8 6.1
Predictions Lees Cabins, Wide Bay 57° 26' 156°18' 9.8 11.9 6.2
Predictions Kujulik Bay (North Shore) 56° 36.8' 157°59.0' 7.18 9.50 5.08
Predictions Unavikshak Island 56° 29.5' 157°44.4' 6.86 9.08 4.80
Predictions Nakchamik Island 56° 21.1' 157°48.7' 6.73 8.99 4.82
Predictions Chignik, Anchorage Bay 56° 17.8' 158°24.0' 6.77 8.96 4.78
Predictions Castle Bay, Northwest Arm 56° 13.9' 158°20.8' 6.58 8.82 4.72
Predictions Chankliut Island 56° 08.8' 158°06.4' 6.32 8.50 4.55
Predictions Chowiet Island, Semidi Island 56° 03.1' 156°41.9' 6.75 8.95 4.79
Predictions Three Star Point 55° 54' 159°10' 5.7 7.9 4.2
Predictions Chiachi Island (east side) 55° 51' 159°6' 5.6 7.8 4.2
Predictions Kupreanof Harbor, Paul Island 55° 47' 159°21' 5.6 7.8 4.2
Predictions Fox Bay, Kupreanof Peninsula 55° 38' 159°37' 5.5 7.6 4.0
Predictions Dent Point, Stepovak Bay 55° 47' 159°53' 5.5 7.6 4.0
Shumagin Islands
Predictions Korovin Island (east side) 55° 24' 160°9' 5.6 7.8 4.2
Predictions Sanborn Harbor, Nagai Island 55° 9' 159°59' 5.2 7.2 3.9
Predictions Mist Harbor, Nagai Island 55° 8' 159°51' 5.1 7.0 3.7
Predictions Pirate Cove, Popof Island 55° 22' 160°22' 5.4 7.4 4.0
Predictions SAND POINT, POPOF ISLAND 55° 20.2' 160°30.1' 5.19 7.23 3.93
Predictions Zachary Bay, Unga Island 55° 20' 160°37' 5.4 7.5 4.0
Predictions Albatross Anchorage, Balboa Bay 55° 35' 160°37' 5.5 7.6 4.1
Predictions Beaver Bay 55° 28' 160°50' 5.2 7.3 4.0
Predictions Seal Cape, Coal Bay 55° 22' 161°20' 5.0 7.0 3.9
Predictions Ukolnoi Island 55° 16' 161°32' 5.0 7.0 3.8
Predictions Dolgoi Harbor, Dolgoi Island 55° 7' 161°48' 4.7 6.7 3.6
Predictions Settlement Point, Pavlof Bay 55° 30' 161°28' 5.2 7.2 3.8
Predictions Canoe Bay, Pavlof Bay 55° 35' 161°16' 4.6 6.5 3.5
Predictions King Cove 55° 4' 162°19' 4.8 6.8 3.7
Predictions Lenard Harbor, Cold Bay 55° 7' 162°23' 5.1 7.2 3.8
Predictions Cold Bay 55° 12' 162°42' 5.2 7.1 3.8
Predictions Morzhovoi Bay 55° 1' 162°58' 4.7 6.8 3.6
Sanak Islands
Predictions Peterson Bay 54° 24' 162°38' 4.0 6.2 3.4
Predictions Sanak Harbor 54° 29' 162°49' 4.4 6.6 3.6
Aleutian Islands Mean Spring Mean Tide
Range Range Level
Predictions Station Latitude Longitude (ft) (ft) (ft)
Unimak Island
Predictions Dora Harbor 54° 42' 163°16' 4.3 6.5 3.5
Predictions Ikatan Bay 54° 45' 163°19' 4.6 6.5 3.6
Predictions False Pass, Isanotski Strait 54° 52' 163°24' 2.1 4.1 2.4
Predictions St. Catherine Cove 55° 1' 163°30' 2.6 4.7 2.9
Predictions Cape Mordvinof 54° 56' 164°28' 4.3 6.4 3.7
Predictions Cape Sarichef 54° 36' 164°55' 3.2 5.0 3.1
Predictions Scotch Cap 54° 24' 164°44' 3.3 5.4 3.1
Predictions Tigalda Bay, Tigalda Island 54° 7' 164°59' 1.8 3.3 1.9
Predictions Trident Bay, 1262 Island 54° 8' 165°32' 2.5 4.1 2.1
Predictions 1262 Bay, 1262 Island 54° 14' 165°32' 1.6 3.0 1.9
Predictions Akutan Harbor, Akutan Island 54° 8' 165°48' 2.4 3.9 2.5
Predictions Malga Bay, Unalga Island 53° 59' 166°10' 1.8 3.3 2.0
Unalaska Island
Predictions English Bay 53° 56' 166°15' 1.8 3.0 1.8
Predictions Dutch Harbor, Amaknak Island 53° 54' 166°32' 2.2 3.7 2.3
Predictions UNALASKA 53° 52.8' 166°32.2' 2.39 3.60 2.12
Predictions Anderson Bay 53° 41' 166°50' 2.4 4.0 2.5
Predictions Skan Bay 53° 37' 167°3' 2.3 4.0 2.4
Predictions Kashega Bay 53° 28' 167°5' 2.3 4.0 2.5
Predictions Chernofski Harbor 53° 24' 167°32' 2.2 3.8 2.4
Predictions Kuliliak Bay 53° 28' 167°1' 3.5 5.6 3.2
Predictions Eagle Bay 53° 29' 166°56' 3.8 5.4 3.1
Predictions Raven Bay 53° 28' 166°52' 3.6 5.7 3.3
Predictions Usof Bay 53° 31' 166°48' 3.9 6.1 3.3
Predictions Udamat Bay, Sedanka Island 53° 50' 166°13' 3.3 5.1 2.9
Predictions Udagak Strait 53° 44' 166°18' 3.5 5.5 2.9
Predictions Kisselen Bay, Beaver Inlet 53° 43' 166°34' 3.5 5.2 3.0
Predictions Bogoslof Island 53° 55' 168°2' 2.4 3.9 2.5
Umnak Island
Predictions Otter Point 53° 24' 167°51' 1.9 3.4 2.0
Predictions Inanudak Bay 53° 18' 168°21' 2.2 3.7 2.2
Predictions Okee Bay 53° 1' 168°50' 2.1 3.7 2.3
Predictions Adugak Islands 52° 55' 169°10' 2.2 4.0 2.4
Predictions Cape Sagak 52° 50' 169°3' 2.9 4.9 2.6
Predictions Driftwood Bay 52° 57' 168°43' 3.3 5.3 2.9
Predictions Kigul Island 53° 3' 168°26' 3.2 5.5 3.1
Predictions Applegate Cove, Chuginadak Island 52° 52' 169°52' 2.2 4.2 2.6
Predictions Herbert Island, west side 52° 43' 170°9' 2.8 4.4 2.5
Yunaska Island
Predictions East Cove 52° 40' 170°34' 2.0 3.7 2.0
Predictions North side 52° 41' 170°42' 2.1 4.0 2.4
Predictions Amukta Island, north side 52° 31' 171°14' 1.9 3.6 2.2
Predictions Finch Cove, Seguam Island 52° 23' 172°24' - - 3.2 1.6
Atka Island
Predictions Martin Harbor, Korovin Bay 52° 14' 174°18' - - 3.2 1.6
Predictions Nazan Bay 52° 12' 174°11' - - 3.3 1.6
Predictions Cape Utalug (4 miles west of) 52° 7' 174°12' - - 4.4 2.2
Predictions Atka Pass, east end 52° 0' 175°19' - - 4.6 2.3
Predictions Sagchudak Island 52° 2' 174°29' - - 4.6 2.3
Predictions Explorer Bay 52° 4' 174°34' - - 4.6 2.3
Predictions Bechevin Bay 52° 2' 175°7' - - 3.5 1.7
Predictions Fenimore Pass 51° 58' 175°35' - - 3.3 1.6
Predictions Bugle Point, Great Sitkin Island 52° 2' 175°59' - - 3.3 1.6
Predictions Sand Bay, Great Sitkin Island 51° 58' 176°5' - - 3.6 1.8
Predictions Cemetery Point, Kagalaska Island 51° 49' 176°16' - - 3.4 1.7
Predictions Laska Cove, Kagalaska Island 51° 50' 176°24' - - 3.6 1.8
Adak Island
Predictions Clam Lagoon, Kuluk Bay 51° 56' 176°36' - - 2.9 1.4
Predictions SWEEPER COVE, Kuluk Bay 51° 51.8' 176°37.9' 2.90 3.71 2.01
Predictions Finger Bay, Kuluk Bay 51° 50' 176°37' - - 3.7 1.8
Predictions Adak Bight 51° 46' 176°26' - - 3.7 1.8
Predictions Boot Bay 51° 43' 176°32' - - 3.6 1.8
Predictions Bay of Waterfalls 51° 39' 176°50' - - 3.5 1.7
Predictions Three Arm Bay 51° 45' 176°51' - - 3.7 1.8
Predictions Unalga Bight 51° 47' 176°48' - - 3.6 1.8
Predictions Andrew Bay 51° 59' 176°38' - - 3.6 1.8
Kanaga Island
Predictions Shoal Point 51° 52' 177°4' - - 3.2 1.6
Predictions Cape Chlanak 51° 43' 177°9' - - 3.4 1.7
Predictions Kanaga Bay 51° 43' 177°12' - - 3.9 1.9
Predictions Cape Chunu 51° 40' 177°38' - - 4.1 2.0
Tanaga Island
Predictions Gusty Bay 51° 52' 177°54' - - 3.3 1.6
Predictions Hot Springs Bay 51° 47' 177°48' - - 3.1 1.5
Predictions Tanaga Bay 51° 43' 178°0' - - 4.0 2.0
Predictions Lash Bay 51° 40' 178°3' - - 4.2 2.1
Delarof Islands
Predictions Ogliuga Island (east coast) 51° 36' 178°37' - - 3.5 1.7
Predictions Gareloi Island 51° 45' 178°48' - - 3.7 1.8
Predictions Ulak Island 51° 22' 178°59' - - 3.8 1.9
Rat Islands
Predictions South Bight, Amchitka Island 51° 23' 179°23' - - 3.5 1.7
Predictions Constantine Harbor, Amchitka Island 51° 25' 179°17' - - 2.8 1.4
Predictions Gertrude Cove, Kiska Island 51° 56' 177°27' - - 3.2 1.6
Predictions Kiska Harbor, Kiska Island 51° 59' 177°33' - - 3.6 1.8
Predictions Alcan Harbor, Shemya Island 52° 44' 174°4' - - 3.4 1.7
Predictions Otkriti Bay, Agattu Island 52° 23' 173°38' - - 3.4 1.7
Attu Island
Predictions MASSACRE BAY 52° 50' 173°12' - - 3.3 1.6
Predictions Chichagof Harbor 52° 56' 173°14' - - 3.6 1.8
Predictions Holtz Bay 52° 56' 173°10' - - 3.7 1.8
Predictions Steller Cove 52° 59' 172°54' - - 3.7 1.8
Predictions Etienne Bay 52° 56' 172°37' - - 3.7 1.8
Bristol Bay Mean Spring Mean Tide
Range Range Level
Predictions Station Latitude Longitude (ft) (ft) (ft)
Predictions Amak Island 55° 25' 163°7' 5.2 7.7 4.7
Predictions Grant Point, Izembek Lagoon 55° 16' 162°54' 3.2 4.5 2.6
Predictions Port Moller (Entrance Point) 55° 59' 160°34' 7.6 10.8 6.2
Predictions Port Heiden 56° 56' 158°44' 8.5 12.3 6.9
Egegik River
Predictions Entrance 58° 14' 157°30' 13.8 18.2 9.4
Predictions Egegik 58° 13' 157°22' 10.8 13.3 6.2
Predictions Middle Bluff, Kvichak Bay 58° 27' 157°30' 15.2 19.6 10.1
Naknek River
Predictions Entrance 58° 43' 157°3' 18.5 22.6 11.4
Predictions Morakas Point 58° 44' 156°56' 15.1 17.8 8.4
Predictions Omakstalia Point 58° 42' 156°45' 6.3 8.1 3.4
Predictions King Salmon Airport 58° 40' 156°39' 2.1 3.2 1.2
Kvichak River
Predictions Nakeen 58° 56' 157°2' 15.4 17.9 8.4
Predictions Kvichak 58° 58' 156°57' 13.9 16.5 7.8
Predictions Levelock 59° 7' 156°50' 8.2 10.3 4.6
Nushagak Bay
Predictions Protection Point 58° 30' 158°42' 12.7 16.9 8.8
Predictions NUSHAGAK BAY (Clarks Point) 58° 51' 158°33' 15.3 19.5 10.1
Predictions Snag Point 59° 2' 158°27' 15.9 19.8 10.0
Predictions Black Rock, Walrus Islands 58° 42' 160°11' 5.9 9.5 4.7
Kuskokwim Bay and River Mean Spring Mean Tide
Range Range Level
Predictions Station Latitude Longitude (ft) (ft) (ft)
Predictions Goodnews Bay entrance 59° 3' 161°49' 6.2 8.9 3.7
Predictions Carter Spit 59° 19' 161°57' 8.0 10.7 4.7
Predictions Eek Channel, off Quinhagak 59° 45' 162°15' 9.7 12.3 5.3
Predictions Warehouse Creek entrance 59° 56' 162°5' 10.0 12.6 5.5
Predictions Kuskokwak Creek entrance 60° 2' 162°10' 9.6 12.2 5.3
Predictions Popokamute 60° 4' 162°25' 8.3 10.9 4.6
Predictions Apokak Creek entrance 60° 8' 162°10' 9.4 12.0 5.2
Predictions Bethel 60° 48' 161°45' 2.3 4.0 1.5
Bering Sea Mean Spring Mean Tide
Range Range Level
Predictions Station Latitude Longitude (ft) (ft) (ft)
Predictions Zapadni Bay, St. George Island 56° 34' 169°41' - - 3.3 1.7
Predictions Village Cove, St. Paul Island 57° 7' 170°16' 2.0 3.2 2.0
Predictions St. Matthew Island 60° 22' 172°43' 1.3 2.1 1.2
St. Lawrence Island
Predictions Northeast Cape 63° 17' 168°44' 1.9 2.4 1.1
Predictions Fossil River entrance 63° 28' 170°2' 1.3 1.7 0.8
Predictions Niyrakpak Lagoon entrance 63° 37' 171°23' 0.9 1.2 0.6
Predictions Moghoweyik River entrance 63° 28' 171°50' 1.3 1.7 0.8
Predictions Powooiliak Point 63° 21' 171°16' 1.8 2.4 1.2
Predictions Maknik Lagoon entrance 63° 7' 169°25' 1.5 1.9 0.9
Predictions Tachikuga Bay, Nunivak Island 60° 4' 167°14' 3.1 4.3 2.3
Predictions Kokechik Bay 61° 42' 166°0' 4.8 6.5 3.4
Predictions Cape Romanzof 61° 49' 166°5' 5.2 6.8 3.3
Predictions Black, Black River 62° 20' 165°19' 3.8 5.0 2.5
Predictions Kwikluak Pass, Yukon River 62° 37' 164°51' 1.4 2.3 0.8
Predictions Kawanak Pass entrance, Yukon River 63° 2' 164°28' 1.5 2.7 0.9
Norton Sound Mean Spring Mean Tide
Range Range Level
Predictions Station Latitude Longitude (ft) (ft) (ft)
Predictions Apoon Mouth, Yukon River 63° 3' 163°23' - - 4.0 2.0
Predictions Pikmiktalik River entrance 63° 16' 162°36' - - 4.2 2.1
Predictions ST. MICHAEL 63° 29' 162°2' - - 3.9 2.0
Predictions North Bay, Stuart Island 63° 37' 162°30' - - 2.8 1.4
Predictions Carolyn Island, Golovnin Bay 64° 27' 162°52' - - 1.8 0.9
Predictions NOME 64° 30.0' 165°25.8' 1.04 1.54 0.83
Bering Straits Mean Spring Mean Tide
Range Range Level
Predictions Station Latitude Longitude (ft) (ft) (ft)
Predictions Kiwalik, Kotzebue Sound 66° 8' 161°52' 2.1 2.7 1.3
Predictions Point Barrow 71° 22' 156°22' 0.3 0.4 0.2
Predictions PRUDHOE BAY 70° 24.0' 148°31.6' 0.51 0.69 0.33
Predictions Flaxman Island 70° 11' 145°50' 0.5 0.7 0.3
Revised: 14 December 2007