20081317 Ver 1_Table 12b 2010-2014 Hell Swamp Summary Hydroperiod_20160314

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Table 12b. Summary of occurrence of hydroperiods and drought status from 2009 to 2014 for non -riparian wells at Hell Swamp
during normal rainfall conditions. (WH=wetland hydroperiod, NN= nearly normal, BN= below normal, MBN= much below normal,
AN= above normal, and MAN= much above normal).
Note: The longest hydroperiod at each well in Hell Swamp is depicted as a percentage of the 282 -day (or 283 -day for leap years)
growing season when the water table was recorded as -12" or above for each monitoring year. Also shown are the Palmer Drought
Severity Index (PDSI) and the Palmer Hydrological Drought Index (PHDI) drought rankings for the NOAA Central Coastal Plain
region of North Carolina by year. Drought rankings reflect the rankings given at the most recent year shown in the table; drought
status may change as vears of climatic data are added.
Well
2010
2011 2012
2013
2014
# of
Years
with WH
% of Years
with WH for
All Years
SI
D % of Years with
WH with NN and
BN Ranking
PHIDI
% of Years with
WH with NN and
BN Ranking
1
12.8
42.2 33.2
45.4
5
100
100
100
2 2
10.6
25.5 23.7
27.7
26.6
5
100
100
100
3
7.8
19.9 17.0
27.3
25.5
5
100
100
100
4
<6
18.4 8.8
24.8
24.5
4
80
66
75
5
<6
18.8 15.9
25.2
24.8
4
80
66
75
6
<6
19.5 16.6
25.5
25.2
4
80
66
75
7
7.4
9.6 8.5
10.6
26.2
5
100
100
100
8 3
<6
19.5 16.6
27.3
25.2
4
80
66
75
9
7.8
23.0 23.0
®
45.4
5
100
100
100
10
<6
9.6 9.2
25.5
25.5
4
80
66
75
11
<6
<6 <6
<6
<6
0
0
0
0
121
12.8
27.7 33.2
31.9
33.7
5
100
100
100
131
12.8
33.3A 33.2
45.4
5
100
100
100
14
<6
6.7 6.0
7.1
13.1
4
80
66
75
15
<6
8.2 15.5
32.3
15.6
4
80
66
75
18 5
12.8
29.4 23.7
32.3
39.4
5
100
100
100
19
<6
8.9 6.7
8.2
15.2
4
80
66
75
204
<6
9.2 12.0
27.3
29.4
4
80
66
75
21
8.9
1111111iff 25.1
30.5
30.5
5
100
100
100
22
<6
19.1 15.9
25.2
24.8
4
80
66
75
PDSI
NN
BN NN
AN
AN
PHDI
NN
BN BN
NN
AN

-n_
CD
Table 12b.
(continued)
=r-
# of
% of Years
PDSI
PHDI
% of Years with
% of Years with
3
2010
2011
2012
2013
2014
Years
with WH for
-0
WH with NN and
WH with NN and
Cnwith
WH
All Years
a o
BN Ranking
BN Ranking
<6
7.8
7.4
13.8
24.8
4
80
66
75
C/) - 23
3n
3 m
24
9.2
23.8
22.6
28
29.4
5
100
100
100
v CD
25
<6
8.5
7.4
16.3
16.0
4
80
66
75
26
9.6
19.9
8.8
26.2
5
100
100
100
CD
27
12.8
26.6
25.1
50.4
30.1
5
100
100
100
28
35.5
26.6
24.7
31.9
30.5
5
100
100
100
29
8.9
19.5
17
27
25.5
5
100
100
100
303
<6
16.7
7.8
17
23.8
4
80
66
75
314
<6
6.7
8.1
16.3
25.5
4
80
66
75
32
<6
19.1
8.1
10.6
16.0
4
80
66
75
33
<6
<6
6.4
7.8
15.6
3
60
33
50
34
<6
18.4
16.6
27.3
25.5
4
80
66
75
35
<6
18.1
16.3
25.5
25.2
4
80
66
75
36
8.9
19.5
17
27.7
25.5
5
100
100
100
37
12.8
27.7
33.2
31.6
31.2
5
100
100
100
38
9.6
23.0
17
16.3
16.0
5
100
100
100
39
<6
<6
6.7
25.2
13.1
3
60
33
50
406
9.9
23.4
33.2
45.4
5
100
100
100
41
<6
<6
6
6.4
7.1
3
60
33
50
43 4
<6
<6
<6
6.4
12.8
2
40
0
25
44
<6
<6
9.9
24.8
24.5
3
60
33
50
45
<6
18.1
16.3
27.3
26.2
4
80
66
75
n
Cn
46
<6
13.8
9.9
27
24.5
4
80
66
75
47
6.0
19.9
17.3
30.5
25.2
5
100
100
100
°n
c
48 3
7.4
25.9
26.1
30.5
29.8
5
100
100
100
49
7.1
23.8
16.6
25.5
26.2
5
100
100
100
CD
50
<6
<6
6.7
8.2
15.2
3
60
33
50
C()
51
<6
<6
<6
6.4
6.0
2
40
0
25
NN
BN
NN
AN
AN
C:-0 PDSI
v v
PHDI
NN
BN
BN
NN
AN
N
O
C (7

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v-0
v Cn
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Table 12b. (continued)
# of
% of Years
% of Years with
% of Years with
Well
2010
2011
2012
2013
2014
Years
with WH for
WH with NN and
WH with NN and
with WH
All Years
BN Ranking
BN Ranking
52
<6
<6
33.2
16.3
15.6
3
60
33
50
54 6
<6
19.9
9.9
27.3
25.2
4
80
66
75
55 4
<6
19.5
17.3
27.7
26.6
4
80
66
75
56
<6
6.7
6.4
25.5
15.6
4
80
66
75
57
<6
<6
7.1
25.5
13.1
3
60
33
50
58 6
<6
<6
11.7
25.2
18.1
3
60
33
50
59
<6
8.2
10.2
26.6
25.2
4
80
66
75
60
9.2
23.4
17.3
27.7
26.6
5
100
100
100
61
<6
8.2
6.7
27
8.9
4
80
66
75
62
<6
18.4
6.7
16
15.6
4
80
66
75
63
13.1
23.4
16.6
27.3
26.2
5
100
100
100
64
6.4
23.0
17.3
27
25.9
5
100
100
100
65
<6
7.8
6.7
16
15.6
4
80
66
75
66 6
<6
<6
<6
7.1
16.7
2
40
0
25
68 4
12.8
29.1
26.9
32.6
30.9
5
100
100
100
69 4
<6
7.4
8.8
27
15.6
4
80
66
75
71
<6
18.4
9.5
25.5
24.8
4
80
66
75
72
7.1
23.4
17
27.3
25.5
5
100
100
100
73 3
<6
24.8
22.6
27.3
39.0
4
80
66
75
74 3
<6
24.1
16.3
16.3
15.2
4
80
66
75
76
<6
7.8
6.7
17.4
15.6
4
80
66
75
77
9.6
23.4
17
28
26.6
5
100
100
100
78 6
<6
16.7
6.7
16
12.8
4
80
66
75
80 8
<6
18.8
9.9
25.2
15.6
4
80
66
75
818
<6
23.4
11.3
26.6
25.5
4
80
66
75
839
<6
<6
6
7
9.6
3
60
33
50
84
9.2
8.2
9.9
7
25.2
5
100
100
100
85
8.9
24.5
17.7
28.7
25.9
5
100
100
100
PDSI
NN
BN
NN
AN
AN
PHDI
NN
BN
BN
NN
AN

-n_
m
Table 12b.
(continued)
=r-
# of
% of Years
PDSI
PHDI
% of Years with
% of Years with
3
Well
2010
2011
2012
2013
2014
Years
with WH for
-0
WH with NN and
WH with NN and
Cnwith
WH
All Years
a o
BN Ranking
BN Ranking
<6
16.7
6.4
7.8
16.0
4
80
66
75
C/) - 86
3 C-)
87
6.7
19.9
16.6
25.5
24.8
5
100
100
100
v CD
88
6.0
23.4
17
27
25.2
5
100
100
100
89
7.1
19.9
8.8
28.7
31.6
5
100
100
100
CD
90
<6
13.8
6.4
7.8
16.7
4
80
66
75
95 8
<6
23.4
19.8
21.3
10.3
4
80
66
75
96
7.4
22.7
16.6
27
26.6
5
100
100
100
97
14.9
24.8
17.7
27.3
26.2
5
100
100
100
98
7.4
19.1
9.5
16
15.6
5
100
100
100
99
<6
23.8
16.6
17.4
15.6
4
80
66
75
100
11.7
27.3
27.2
31.6
30.1
5
100
100
100
101
9.9
27.7
33.2
30.5
29.8
5
100
100
100
102 3
<6
7.1
6
7.8
13.1
4
80
66
75
0)103
3
<6
18.8
7.4
17.4
16.0
4
80
66
75
104 3
<6
18.4
7.4
25.2
13.1
4
80
66
75
10510
<6
<6
7.8
7.8
12.8
3
60
33
50
106
7.1
9.2
6.4
7.8
15.6
5
100
100
100
107
<6
19.9
<6
16.3
15.6
3
60
33
50
108
8.9
23.4
16.6
i
16.0
5
100
100
100
1093
<6
18.4
8.8
25.6
16.0
4
80
66
75
110
13.5
28.7
26.9
27.3
27.0
5
100
100
100
111
<6
23.4
15.9
25.6
25.2
4
80
66
75
C)
Cn
112
<6
19.9
11.3
27.7
24.8
4
80
66
75
113
37.9
19.5 ■
7.1
15.6
13.1
5
100
100
100
(n
114
13.5
26.2
27.3
26.2
5
100
100
100
115
11.7
25.2
16.6
57.1
15.6
5
100
100
100
CD
116
<6
23.4
17.3
27.3
27.0
4
80
66
75
CD 0
117
<6
65.6
17.7
26.6
25.2
4
80
66
75
NN
BN
NN
AN
AN
C:-0 PDSI
v v
PHDI
NN
BN
BN
NN
AN
N
O
C (7

-n_
CD
Table 12b. (concluded)
=r-
# of
% of Years
PDSI
PHDI
v
"/o of Years with
"/o of Years with
c 3
v -0
Well 2010
2011
2012 2013
2014
Years
with WH for
WH with NN and
WH with NN and
= Cn
with WH
All Years
BN Rankin 9
BN Rankin 9
0-0
118 7.8
19.1
6.7 7.8
15.2
5
100
100
100
C: n
3 m
119
23.4
7.8 8.2
16.0
5
100
100
100
C
120 <6
<6
<6 <6
<6
0
0
0
0
121 s 12.8
17.4
261 30.9
45.4
5
100
100
100
iD
122 <6
<6
<6 <6
7.8
1
20
0
0
124 <6
<6
6.0 6.4
7.4
3
60
33
50
Control
Wells
Ref 17.7
23.4
23.7 27
26.6
5
100
100
100
Ref2 19.5
24.8
24.7 28
27.0
5
100
100
100
Ref3 12.8
28
33.9 30.9
30.9
5
100
100
100
PP111 <6
12.8
<6 6.7
10.3
3
60
66
75
PP211 6.0
23.4
33.9 25.5
29.8
5
100
100
100
PP311 12.8
29.1
33.2 32.9
35.8
5
100
100
100
PP411 <6
18.4
23.7 10.3
14.9
4
80
100
100
WF -112 NI
12.8
33.2 29.4
31.2
4
100
100
100
WF -2 12 N 1
<6
8.1 8.5
16.0
3
75
100
67
WF -312 NI
<6
<6 7.8
11.3
2
50
0
33
WF -4 12 N 1
<6
<6 7.8
13.1
2
50
0
33
WF -5 12 N 1
<6
<6 <6
<6
0
0
0
0
WF -612 NI
<6
22.6 27.3
29.1
3
75
50
67
N 1
<6
6.0 10.3
8.2
3
75
50
67
PDSI NN
BN
NN AN
AN
PHDI NN
BN
BN NN
AN
Cn
0
If no installation date is given,
well was installed before 28 Feburary 2010.
N1= not installed
sInstalled 31 March 2010
Installed
12
28 July 2011
CD
lInstalled 30 March 2010
Installed 26 March 2010
Italicized= Well
malfunction resulted in an
CD o ZInstalled
18 March 2010
$Installed 8 April 2010
estimation of exact hydroperiod length and so
C
3lnstalled 24 March 2010
Installed 21 April 2010
reported hydroperiod could possibly
be shorter than
4Installed 25 March 2010
10Installed 6 May 2010
what occurred.
5Installed 17 March 2010
"Installed 6 October 2010
WF -1 through 7 WH years calculations
start at 2011.
rn�