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Groundwater Table Adjustment Factors

Factors are updated as needed during the wet season. They are an approximation of the groundwater table status for the soil types listed. For further information, contact Andrew DeRiso at 401-222-4700 ext. 7704.

*Note-some monitoring wells dry/factor may be greater than number indicates.
**A negative number indicates a flooded condition.

Date Glacial outwash (inches) Glacial till (inches) West Bay Glacial till (inches) East Bay
4/13/18 9 26 34
3/30/18 5 20 23
3/9/18 0 -6 -6
2/19/18 6 6 6
2/2/18 14 29 20
3/31/17 10 24 22
3/15/17 15 29 47
2/1/17 48 32 35
1/18/17 9 7 8
1/4/17 26 54 41
4/13/16 11 23 26
3/30/16 20 37 49
2/24/16 17 36 22
1/27/16 24 67 41
12/16/15 42 90 75
10/28/15 47 96 66
9/16/15 46 96 76
4/13/15 14 10 25
3/18/15 21 55 -4
1/7/15 26 57 24
12/10/14 43 90 42
10/22/14 47 94 80
9/19/14 44 91 80
4/23/14 5 9 20
4/3/14 0 5 -8
3/26/14 18 35 50
3/12/14 21 50 37
2/26/14 18   -1
2/12/14 22 61 48
1/29/14 19 50 26
10/16/13 36 92 82
1/8/14 28 72 35
9/11/13 31 91 79
7/24/13 25 68 56
6/26/13 13 48 34
5/15/13 27 64 68
4/17/13 21 43 49
3/20/13 15 27 18
2/27/13 23 31 8
1/30/13 24 54 52
1/9/13 29 62 43
12/12/12 42 65 67
11/14/12 45 72 76
10/17/12 45 91 83
9/12/12 42 93 80
7/11/12 32 81 72
6/6/12 23 55 67
5/16/12 19 51 31
4/4/12 25 72 68
3/14/12 20 55 58
2/29/12 20 57 56
2/15/12 16 47 55
2/1/12 11 36 35
1/11/12 14 42 53
12/21/11 9 30 35
11/30/11 11 15 29
10/26/11 17 44 23
9/21/11 23 56 62
7/20/11 30 83 76
6/29/11 25 65 65
5/25/11 15 33 47
4/20/11 9 10 21
4/6/11 15 26 45
3/30/11 15 23 46
3/23/11 12 15 36
3/9/11 11 9 11
2/16/11 21   23
1/12/11 33 74 60
12/15/10 30 68 64
11/17/10 42 87 58
10/20/10 45 91 80
9/15/10 43 95 83
8/20/10 37 95 79
7/21/10 32 91 79
6/16/10 15 73 73
5/19/10 5 52 68
4/21/10 -12 11 41
4/14/10 -16 0 21
4/7/10 -25 -9 -9
3/17/10 -12 -5 -15
3/3/10 0 10 9
2/17/10 17 47 56
2/3/10 12 40 41
1/13/10 14 39 56
12/16/09 10 29 25
11/18/09 25 68 57
10/14/09 30 84 51
9/16/09 25 89 66
8/19/09 16 77 65
7/15/09 9 57 38
6/17/09 19 51 68
5/13/09 7 32 43
4/29/09 5 18 31
4/15/09 6 19 19
4/1/09 14 35 48
3/18/09 11 21 31
2/27/09 11 33 46
2/13/09 13 33 39
1/26/09 13 33 49
1/7/09 8 20 23
4/15/08 13 33 38
4/9/08 9 27 28
3/26/08 7 19 13
3/13/08
(3" rain event on 3/8/08)
5 13 -9
2/27/08 16 32 22
2/12/08 30 48 35
1/29/08 35 71 50
1/16/08 36 76 50
1/2/08 39 89 55
4/25/07 -3 1 5
4/13/07 6 18 24
3/30/07 6 24 20
3/16/07 13 50 55
2/28/07 26 58 66
1/30/07 14 37 45
1/16/07 8 29 23
12/15/06 15 51 52
4/17/06 19 66 70
3/29/06 16 59 66
3/15/06 12 48 62
2/27/06 9 30 50
2/1/06 7 13 17
1/12/06 8 33 23
4/27/05 7 20 48
4/5/05 -8 -8 -11
3/21/05 12 38 21
2/25/05 9 23 21
1/28/05 12 33 36
12/30/04 14 40 40
11/29/04 22 ----- -----
10/29/04 26 ----- -----
10/1/04 26 ----- -----
8/24/04 46 ----- -----
8/4/04 60 ----- -----
7/4/04 57 ----- -----
6/4/04 52 ----- -----
5/26/04 12 ----- -----
4/28/04 4 9 4
4/21/04 0 2 4
4/8/04 6 20 4
3/30/04 22 57 57
2/26/04 30 64 62
2/13/04 21 53 62
1/28/04 22 47 63
1/14/04 16 40 48
12/30/03 10 27 32
11/26/03 -5 ----- -----
10/30/03 12 ----- -----
9/29/03 31 ----- -----
8/28/03 24 ----- -----
7/29/03 16 ----- -----
6/26/03 9 ----- -----
5/14/03 12 30 43
4/25/03 0 5 0
4/9/03 6 6 12
3/26/03 7.5 15 25
3/13/03 17 33 21
2/25/03 18 51 28
2/13/03 28 55 65
1/28/03 18 44 53
1/8/03 11 25 -4
5/22/02 18 34 10
5/3/02* 26 49.4 42
4/24/02* 28 65 40
4/10/02* 25 61 18
3/28/02* 29 68 41
3/15/02* 37 81 60
2/28/02* 41 91 62
1/25/02* 42 97 56
4/25/01 6 15 25
4/12/01 -2 -4 -2
4/4/01 -11 -14 -18
3/27/01 -1 -10 -9
3/20/01
(pre-rain event)
12 22 2
2/28/01 21 46 31
2/20/01 22 50 30
2/07/01 24 59 23
1/24/01 26.5 67.5 31
12/28/00 25 67 25
5/26/00 13 36 49
5/9/00 10 23 34
4/26/00 1 5 0
4/13/00 14 28 37
3/31/00 9 20 8
3/21/00 8 21 0
3/14/00 10 31 0
2/24/00 19 56 47
2/8/00 26 65 53
1/21/00 21.5 54 47.5
12/22/99 25 63 40
 
Contact Water Resources
Office of Water Resources
OWTS Program
235 Promenade Street
Providence, RI 02908-5767
Phone: (401) 222-3961