U.S. States Change Log

Effective 22 March 2022
01 March 2022

Per SCN 22-07

Added areas to account for the inclusion of Northern Marians,
Federated States of Micronesia, Marshall Islands, and Palau

DKR
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Effective 11 August 2016
12 July 2016 (s_11au15.zip)

Per SCN 16-24 Land/water areas adjusted in WFO OKX to add Governor's Island
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Effective 10 November 2015 per sCN 15-48
8 October 2015 (s_10nv15.zip)
Coastline in MFR adjusted for land/water interrface
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Effective 16 December 2014
8 January 2014 (s_16de14.zip)
Erroneous islands removed from LWX MD/VA.
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Effective 4 June 2014
01 June 2014 (s_04jn14.zip)
Coastlines aligned to all changes since last version.
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25 March 2012
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(s_01ap14.zip)

This version and ass subsequent verstions have been check for overlapping
polygons, unneeded gaps, minimum segment lengths of 0.000001 and minimum
polygon areas of 0.00000001.
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28 August 2012
(s_28au12.*)

Added westernmost Hawaiian Islands

1 August 2007
(s_01au07.*)

More small lines and holes removed - CA, CO and WY.

15 July 2006
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(s_16mr06.*)

Small "lines" and holes removed from Western U.S.

20 July 2005
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(s_14jl05.*)

Small "line" removed from AK.

5 June 2003
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(s_12my03.*)

Tiny "gaps" removed from AZ, CO and ID.

04 October 2002
(s_04oc02.*)

Removed field fe_zone.

24 January 2001
(s_24jn02.*)

An erroneous "gap" at the border of Gulf and Bay Counties, FL, from the Gulf of Mexico to East Bay was repaired. 

20 March 2000
(s_20mr00.*)

Coastline modified in Ventura County, CA 

28 November 1998
(s_28nv98.*)

Erroneous "gaps" and "sliver" polygons removed.

06 June 1998
(s_06je98.*)

Original data set.