Magnetic Field Observatories
The USGS gathers data from a world wide
network of stations which monitor the earth’s magnetic field, including declination,
on a continuous basis. Data from these stations is used to update declination data files
and is used by USGS to produce isogonic charts.
The following is a list of some of the
observatories in the U.S. and Canada with their locations and their codes. Note that
longitude is measured to the East not West as normally done in the US.
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NAME CODE LAT ELONG
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ADAK ADA US 51.87 183.36
AGINCOURT AGN CA 43.78 280.73
ALERT ALE CA 82.50 297.50
ANCHORAGE AMU US 61.24 210.13
ANDREWS AFB AWS US 038.82 283.13
ARCTIC VILLAGE AVI US 068.13 214.43
BACK BKC CA 057.68 265.77
BAKER LAKE BLC CA 64.33 263.97
BALDWIN BAL US 38.78 264.83
BARROW BRW US 71.30 203.25
BARTER ISLAND BTI US 70.13 216.02
BAY ST LOUIS BSL US 30.40 270.60
BELOIT BLT US 39.48 261.87
BIG DELTA BDE US 64.00 214.27
BOULDER BOU US 40.14 254.76
BURLINGTON BRT US 39.38 257.73
CAMBRIDGE BAY CBB CA 69.20 255.00
CAPE PARRY CPY CA 070.17 235.28
CARROLLTON CAX US 39.37 266.47
CASPER CSR US 42.83 253.63
CASTLE ROCK CRC US 37.24 237.87
CHELTENHAM CLH US 38.73 283.16
CHESTERFIELD INLCFI CA 063.33 269.28
CLIMAX CLI US 039.37 253.82
COLLEGE CMO US 64.85 212.17
CONTWOYTO LAKE COW CA 065.73 248.75
DALLAS DAL US 32.99 263.25
DAWSON CITY DWC CA 064.07 220.58
DEL RIO DLR US 029.49 259.08
EIELSON AFB ENB US 064.67 212.92
ESKIMO POINT EKP CA 061.10 265.93
ESPANOLA EPN US 35.98 253.95
FORT CHURCHILL FCC CA 58.77 265.90
FORT MCMURRAY FMM CA 056.73 248.62
FORT RAE FRA CA 062.80 243.90
FORT SIMPSON FSP CA 061.75 238.77
FORT SMITH FSM CA 060.00 248.00
FORT YUKON FYU US 66.57 214.73
FREDERICKSBURG FRD US 38.21 282.63
FRESNO FRN US 37.09 240.28
FROBISHER BAY FRB CA 63.45 291.70
GILLAM GIM CA 056.85 265.58
GLENLEA GLL CA 49.60 262.90
GREAT WHALE R. GWC CA 55.27 282.22
HEALY HEA US 63.86 211.03
HONOLULU HON US 21.32 201.94
INUVIK INK CA 068.25 226.70
ISLAND LAKE ISL CA 053.88 265.32
JOHNSON POINT JOP CA 072.47 241.70
KAP TOBIN KTG CA 070.42 238.03
KOTZEBUE KOT US 66.88 197.37
LEADVILLE LDV US 39.28 253.72
LORING AFB LOB US 046.92 291.88
MEANOOK MEA CA 54.62 246.67
MELVILLE AFB MEV CA 053.28 299.47
MOULD BAY MBC CA 76.20 240.60
MT WILSON MWC US 034.22 241.93
NEWPORT NEW US 48.26 242.88
NORDA MAGNETIC ONMO US 30.35 270.36
NORMAN WELLS NOW CA 064.90 234.50
NORTH POLE 6 NPF 084.00 094.00
NORTH POLE 7 NPG 085.00 268.12
NORTH POLE 8 NPH 077.00 189.00
NORTH POLE 10 NPJ 077.00 166.38
NORTH POLE 12 NPL 079.00 187.00
NORTH POLE 13 NPM 081.00 165.00
NORTHWAY NRW US 63.02 218.20
NORWAY HOUSE NHO CA 053.98 262.17
OTTAWA OTT CA 45.40 284.45
PELLY BAY PEB CA 068.53 270.48
PINAWA PNW CA 050.20 263.96
POSTE DE LA BELIPBQ CA 55.27 282.25
PRICE PCU US 39.60 249.17
RABBIT LAKE RBL CA 058.22 256.33
RANKIN INLET RIT CA 062.80 267.67
RESOLUTE BAY RES CA 74.70 265.10
SACHS HARBOUR SAH CA 072.00 235.00
SITKA SIT US 57.05 224.67
ST JOHNS STJ CA 47.59 307.32
TALKEETNA TLK US 062.30 209.90
THOMPSON TMP CA 055.72 262.12
TUCSON TUC US 32.25 249.17
TULSA TUL US 35.91 264.21
VICTORIA VIC CA 48.52 236.58
WESTON WES US 042.38 288.68
WHITESHELL WHS CA 49.75 264.75
WINNIPEG WNP CA 049.63 262.87
YELLOWKNIFE YKC CA 62.40 245.50
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