Internet Archive Wayback Machine

http://usgs.gov has been crawled 2,020 times going all the way back to December 10, 1997.

A crawl can be a duplicate of the last one. It happens about 25% of the time across 420,000,000 websites. FAQ



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2	1		1
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1


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1	1	2	1
2	1			2
1	1		2


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5	1	1
2	1	2
1	1				1
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1	1				1
	1	1	2	2		2
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1	1		1	1
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	2	11	3
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1		1	1			3
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Jan
						1
2	3	4	5	January 6, 2011 1 snapshot 05:26:01 6	7	January 8, 2011 2 snapshots 07:20:08 09:45:48 8
9	January 10, 2011 2 snapshots 05:13:57 12:58:29 10	11	January 12, 2011 1 snapshot 20:49:58 12	13	January 14, 2011 1 snapshot 23:00:34 14	15
16	17	18	19	20	January 21, 2011 1 snapshot 14:41:15 21	22
23	24	25	26	27	28	January 29, 2011 1 snapshot 07:07:08 29
30	January 31, 2011 1 snapshot 23:34:44 31

Feb
		1	2	3	February 4, 2011 1 snapshot 23:57:16 4	February 5, 2011 1 snapshot 01:36:32 5
6	February 7, 2011 1 snapshot 19:59:24 7	February 8, 2011 1 snapshot 01:34:08 8	February 9, 2011 2 snapshots 10:39:54 16:45:38 9	February 10, 2011 1 snapshot 05:32:20 10	11	12
13	February 14, 2011 2 snapshots 20:24:40 22:52:06 14	February 15, 2011 1 snapshot 02:09:39 15	16	17	February 18, 2011 2 snapshots 23:05:40 23:44:44 18	19
20	February 21, 2011 1 snapshot 21:10:13 21	February 22, 2011 1 snapshot 02:38:42 22	23	February 24, 2011 2 snapshots 23:28:45 23:29:40 24	25	26
27	28

Mar
		March 1, 2011 2 snapshots 06:04:15 11:53:12 1	2	3	March 4, 2011 1 snapshot 13:27:13 4	5
6	March 7, 2011 5 snapshots 06:11:08 06:22:57 21:00:51 21:00:59 21:31:32 7	March 8, 2011 1 snapshot 07:51:52 8	March 9, 2011 1 snapshot 01:06:12 9	10	11	12
13	March 14, 2011 2 snapshots 20:43:35 22:52:20 14	March 15, 2011 1 snapshot 03:22:19 15	March 16, 2011 2 snapshots 02:10:57 22:14:35 16	17	18	19
20	March 21, 2011 1 snapshot 21:06:54 21	March 22, 2011 1 snapshot 01:57:39 22	23	24	25	March 26, 2011 1 snapshot 12:52:31 26
27	March 28, 2011 1 snapshot 21:24:42 28	March 29, 2011 1 snapshot 21:01:13 29	March 30, 2011 2 snapshots 16:22:16 16:23:11 30	March 31, 2011 1 snapshot 19:33:42 31

Apr
					April 1, 2011 2 snapshots 21:05:21 21:59:35 1	2
April 3, 2011 1 snapshot 02:41:21 3	April 4, 2011 1 snapshot 22:41:08 4	5	6	7	April 8, 2011 1 snapshot 02:17:04 8	9
10	April 11, 2011 1 snapshot 21:59:31 11	April 12, 2011 1 snapshot 05:29:25 12	April 13, 2011 2 snapshots 01:21:25 15:07:10 13	April 14, 2011 2 snapshots 01:52:28 23:07:46 14	15	April 16, 2011 2 snapshots 05:42:39 21:10:19 16
17	April 18, 2011 2 snapshots 06:44:38 21:53:54 18	19	April 20, 2011 1 snapshot 02:18:24 20	21	22	April 23, 2011 2 snapshots 07:19:33 13:37:38 23
24	April 25, 2011 1 snapshot 22:00:59 25	26	April 27, 2011 1 snapshot 03:27:01 27	28	29	30

May
May 1, 2011 1 snapshot 22:32:05 1	May 2, 2011 1 snapshot 22:19:22 2	3	4	May 5, 2011 1 snapshot 16:58:12 5	6	May 7, 2011 1 snapshot 01:07:17 7
8	May 9, 2011 1 snapshot 13:30:37 9	May 10, 2011 3 snapshots 00:07:46 07:31:51 07:33:46 10	11	12	13	May 14, 2011 2 snapshots 22:25:46 23:26:33 14
15	May 16, 2011 2 snapshots 21:12:39 23:44:58 16	17	18	19	20	21
22	May 23, 2011 1 snapshot 23:24:48 23	24	25	26	27	28
29	May 30, 2011 1 snapshot 23:58:37 30	May 31, 2011 1 snapshot 23:02:14 31

Jun
			June 1, 2011 1 snapshot 21:58:14 1	2	June 3, 2011 1 snapshot 05:52:27 3	4
5	June 6, 2011 1 snapshot 14:54:36 6	June 7, 2011 1 snapshot 02:08:42 7	June 8, 2011 1 snapshot 18:51:54 8	9	June 10, 2011 1 snapshot 23:17:15 10	11
12	13	June 14, 2011 2 snapshots 02:57:33 22:58:14 14	June 15, 2011 11 snapshots 03:13:34 03:34:32 03:44:31 03:45:02 03:45:12 03:48:51 03:49:40 03:50:19 03:50:48 03:51:48 04:12:53 15	June 16, 2011 3 snapshots 01:28:01 20:59:24 21:29:34 16	17	18
19	20	June 21, 2011 1 snapshot 03:36:43 21	22	23	24	June 25, 2011 1 snapshot 08:18:03 25
26	27	June 28, 2011 1 snapshot 18:26:05 28	June 29, 2011 1 snapshot 21:03:39 29	30

Jul
					July 1, 2011 3 snapshots 06:43:12 11:33:41 22:03:37 1	July 2, 2011 1 snapshot 21:37:14 2
3	July 4, 2011 1 snapshot 15:08:21 4	July 5, 2011 1 snapshot 04:50:11 5	6	7	8	9
July 10, 2011 1 snapshot 03:52:41 10	11	July 12, 2011 1 snapshot 09:41:23 12	July 13, 2011 1 snapshot 15:11:43 13	14	15	July 16, 2011 3 snapshots 03:51:04 08:25:01 20:59:34 16
17	18	July 19, 2011 1 snapshot 05:05:11 19	July 20, 2011 1 snapshot 09:33:09 20	July 21, 2011 3 snapshots 07:03:59 07:13:23 07:14:03 21	22	23
24	25	26	27	28	29	30
31

Aug
	1	2	3	4	5	6
7	8	9	10	11	12	13
14	15	16	17	18	19	20
21	22	23	24	25	26	27
28	29	30	31

Sep
				1	2	3
4	5	6	7	8	9	10
11	12	13	14	15	16	17
18	19	20	21	22	23	24
25	26	27	28	29	30

Oct
						1
2	3	4	5	6	7	8
9	10	11	12	13	14	15
16	17	18	19	20	21	22
23	24	25	26	27	28	29
30	31

Nov
		1	2	3	4	5
6	7	8	9	10	11	12
13	14	15	16	17	18	19
20	21	22	23	24	25	26
27	28	29	30

Dec
				1	2	3
4	5	6	7	8	9	10
11	12	13	14	15	16	17
18	19	20	21	22	23	24
25	26	27	28	29	30	31

Note

This calendar view maps the number of times http://usgs.gov was crawled by the Wayback Machine, not how many times the site was actually updated. More info in the FAQ.

January 6, 2011

January 8, 2011

January 10, 2011

January 12, 2011

January 14, 2011

January 21, 2011

January 29, 2011

January 31, 2011

February 4, 2011

February 5, 2011

February 7, 2011

February 8, 2011

February 9, 2011

February 10, 2011

February 14, 2011

February 15, 2011

February 18, 2011

February 21, 2011

February 22, 2011

February 24, 2011

March 1, 2011

March 4, 2011

March 7, 2011

March 8, 2011

March 9, 2011

March 14, 2011

March 15, 2011

March 16, 2011

March 21, 2011

March 22, 2011

March 26, 2011

March 28, 2011

March 29, 2011

March 30, 2011

March 31, 2011

April 1, 2011

April 3, 2011

April 4, 2011

April 8, 2011

April 11, 2011

April 12, 2011

April 13, 2011

April 14, 2011

April 16, 2011

April 18, 2011

April 20, 2011

April 23, 2011

April 25, 2011

April 27, 2011

May 1, 2011

May 2, 2011

May 5, 2011

May 7, 2011

May 9, 2011

May 10, 2011

May 14, 2011

May 16, 2011

May 23, 2011

May 30, 2011

May 31, 2011

June 1, 2011

June 3, 2011

June 6, 2011

June 7, 2011

June 8, 2011

June 10, 2011

June 14, 2011

June 15, 2011

June 16, 2011

June 21, 2011

June 25, 2011

June 28, 2011

June 29, 2011

July 1, 2011

July 2, 2011

July 4, 2011

July 5, 2011

July 10, 2011

July 12, 2011

July 13, 2011