20081317 Ver 1_Table 11b 2010-2014 Hell Swamp Summary Hydroperiod_20160314

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Table 11 b. Summary of occurrence of hydroperiods and drought status from 2009 to 2014 for non -riparian wells at Hell Swamp
during all 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 years of climatic data are added.
Well
2010
2011
2012
2013
2014
# of
Years
with WH
% of Years
with WH for
All Years
PDSI
% of Years with
WH with NN and
BN Ranking
PHDI
% of Years with
WH with NN and
BN Ranking
1
42.2
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
16.6
10.6
26.2
5
100
100
25
8 3
<6
19.5
16.6
27.3 25.:
4
80
66
75
9
7.8
23.0
51.6
l
5
100
100
100
10
<6
9.6
16.6
25.5
25.5
4
80
66
75
11
<6
<6
<6
<6
<6
0
0
0
0
121
24.1
32.3
53.0
31.9
33.7
5
100
100
100
13 '
24.1
33.3
5
100
100
100
14
<6
6.7
6.0
7.1
13.1
4
80
66
75
15
<6
8.5
15.5
32.3
15.6
4
80
66
75
18 5
24.1
32.3
58.0
32.3
65.2
5
100
100
100
19
<6
8.9
7.8
8.2
15.2
4
80
66
75
204
<6
9.2
19.8
27.3
29.4
4
80
66
75
21
9.2
ml,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_
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Table 11 b.
(continued)
=r-
# of
% of Years
PDSI
PHDI
3
% of Years with
% of Years with
Well
2010
2011
2012
2013
2014
Years
with WH for
-0
WH with NN and
WH with NN and
with WH
All Years
a o
BN Ranking
BN Ranking
<6
7.8
7.4
13.8
24.8
4
80
66
75
cn - 23
3 C-)
24
9.2
23.8
22.6
28.0
29.4
5
100
100
100
v CD
25
<6
8.5
7.8
16.3
16.0
4
80
66
75
26
9.6
19.9
17.0
26.2
5
100
100
100
_0
27
24.1
32.3
41.7
50.4
30.1
5
100
100
100
28
35.5
32.3
41.3
31.9
30.5
5
100
100
100
29
8.9
19.5
34.6
27.0
25.5
5
100
100
100
303
<6
16.7
7.8
17.0
23.8
4
80
66
75
314
<6
6.7
8.5
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
10.3
19.5
17.0
27.7
25.5
5
100
100
100
37
24.1
36.2
41.7
31.6
31.2
5
100
100
100
38
9.6
36.2
19.8
16.3
16.0
5
100
100
100
39
<6
<6
6.7
25.2
13.1
3
60
33
50
406
21.6
23.4
5
100
100
100
41
<6
<6
6.0
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
27.0
24.5
4
80
66
75
47
6.0
19.9
17.3
30.5
25.2
5
100
100
100
c°n
48 3
8.2
36.2
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 0
51
<6
<6
<6
6.4
6.0
2
40
0
25
NN
BN
NN
AN
AN
C:-0 PDSI
v
v
N
PHDI
NN
BN
BN
NN
AN
o�
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-n_
CD
Table 11 b.
(continued)
=r-
# of
% of Years
PDSI
PHDI
3
% of Years with
% of Years with
Well
2010
2011
2012
2013
2014
Years
with WH for
-0
WH with NN and
WH with NN and
Cn
with WH
All Years
a o
BN Ranking
BN Ranking
<6
<6
16.3
15.6
3
60
33
50
cn 52
CD
54 s
<6
19.9
14.1
27.3
25.2
4
80
66
75
E3 CD
v
55 4
<6
19.5
22.3
27.7
26.6
4
80
66
75
56
<6
6.7
8.1
25.5
15.6
4
80
66
75
CD
57
<6
<6
7.1
25.5
13.1
3
60
33
50
58 s
<6
<6
11.7
25.2
18.1
3
60
33
50
59
<6
8.2
22.3
26.6
25.2
4
80
66
75
60
9.2
23.4
17.3
27.7
26.6A
5
100
100
100
61
<6
8.2
7.8
27.0
8.9
4
80
66
75
62
<6
18.4
6.7
16.0
15.6
4
80
66
75
63
13.1
23.4
19.4
27.3
26.2
5
100
100
100
64
6.4
23.0
19.1
27.0
25.9
5
100
100
100
65
<6
7.8
6.7
16.0
15.6
4
80
66
75
rn
66 s
<6
<6
<6
7.1
16.7
2
40
0
25
684
24.1
36.2
38.9
32.6
30.9
5
100
100
100
694
<6
7.4
8.8
27.0
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
17.0
27.3
25.5
5
100
100
100
73 3
6.0
24.8
22.6
27.3
43.6
5
100
100
100
74 3
6.4
24.1
16.3
16.3
15.2
5
100
100
100
76
<6
7.8
6.7
17.4
15.6
4
80
66
75
77
9.6
23.4
19.4
28.0
28.4
5
100
100
100
Cn
78 s
<6
16.7
6.7
16.0
12.8
4
80
66
75
808
<6
18.8
9.9
25.2
15.6
4
80
66
75
81 $
<6
23.4
11.3
26.6
25.5
4
80
66
75
839
<6
<6
6.0
7.0
9.6
3
60
33
50
CD
84
9.2
8.2
9.9
7.0
25.2
5
100
100
100
C 0
85
8.9
24.5
17.7
28.7
25.9
5
100
100
100
NN
BN
NN
AN
AN
C:-0 PDSI
v
v
N
PHDI
NN
BN
BN
NN
AN
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Table 11b. (continued)
# of % of Years PDSI PHDI
Well 2010 2011 2012 2013 2014 Years with WH for % of Years with % of Years with
with WH All Years WH with NN and WH with NN and
BN Ranking BN Ranking
86
<6
16.7
6.4
7.8
16.0
4
80
66
75
87
6.7
19.9
16.6
25.5
24.8
5
100
100
100
88
6.0
23.4
17.0
27.0
25.2
5
100
100
100
89
7.1
19.9
19.8
28.7
31.6
5
100
100
100
90
<6
13.8
6.4
7.8
16.7
4
80
66
75
95
6.7
23.4
40.3
21.3
15.6
5
100
100
100
96
7.4
22.7
22.6
27.0
26.6
5
100
100
100
97
14.9
24.8
22.6
27.3
26.2
5
100
100
100
98
7.4
19.1
13.1
16.0
15.6
5
100
100
100
99
<6
23.8
16.6
17.4
15.6
4
80
66
75
100
18.1
36.2
38.5
31.6
30.1
5
100
100
100
101
20.9
36.2
40.6
30.5
29.8
5
100
100
100
102 3
<6
7.1
6.0
7.8
13.1
4
80
66
75
1033
<6
18.8
8.1
17.4
16.0
4
80
66
75
104 3
<6
18.4
7.8
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
6.7
16.3
15.6
4
80
66
75
108
8.9
23.4
16.6
16.0
5
100
100
100
109 3
<6
18.4
8.8
25.6
16.0
4
80
66
75
110
23.8
36.2
38.5
27.3
27.0
5
100
100
100
111
<6
23.4
15.9
25.6
25.2
4
80
66
75
112
<6
19.9
11.3
27.7
24.8
4
80
66
75
113
37.9
19.5
13.1
15.6
13.1
5
100
100
100
114
19.1
36.2
26.5
27.3
26.2
5
100
100
100
115
11.7
25.5
16.6
57.1
15.6
5
100
100
100
116
7.4
23.4
19.8
27.3
27.0
5
100
100
100
117
8.5
17.7
26.6
25.2
5
100
100
100
PDSI
NN
BN
NN
AN
AN
PHDI
NN
BN
BN
NN
AN

-n_
CD
Table 11 b.
(concluded)
=r-
# of
% of Years
PDSI
PHDI
3
% of Years with
% of Years with
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
cn -
118
7.8
19.1
6.7 7.8
15.2
5
100
100
100
3 m
119
23.4
7.8 8.2
16.0
5
100
100
100
v CD
120
<6
<6
<6 <6
<6
0
0
0
0
121 s
24.8
17.4
26.1 30.9
5
100
100
100
CD
122
<6
<6
<6 <6
7.8
1
20
0
0
124
<6
<6
6.0 6.4
24.1
3
60
33
50
Control Wells
Ref
17.7
25.9
23.7 27.0
26.6
5
100
100
100
Ref2
19.5
25.9
24.7 28.0
27.0
5
100
100
100
Ref3
12.8
36.2
43.8 30.9
30.9
5
100
100
100
PP111
<6
36.2
13.1 6.7
10.3
4
80
66
75
PP211
15.2
36.2
25.5
29.8
5
100
100
100
PP311
22.0
36.2
32.9
35.8
5
100
100
100
00
PP411
8.9
21.3
38.5 10.3
14.9
5
100
100
100
WF -112
NI
36.2
43.8 29.4
31.2
4
100
100
100
WF -2 12
N 1
6.0
8.1 8.5
16.0
4
100
100
100
WF -312
NI
7.4
6.0 7.8
11.3
4
100
100
100
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 -6 12
N 1
12.4
22.6 27.3
29.1
4
100
100
100
WF -712
NI
<6
6.0 10.3
8.2
3
75
50
67
PDSI
NN
BN
NN AN
AN
n
Cn
PHDI
NN
BN
BN NN
AN
c°n
If no installation
date is given,
well was installed before 28 Feburary 2010.
N1= not installed
6Installed 31 March 2010
12Installed 28 July 2011
CD
'installed 30 March 2010
7Installed 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=I
3Installed 24 March 2010
91nstalled 21 April 2010
reported hydroperiod could possibly
be shorter than
v v
N
4Installed 25 March 2010
10lnstalled 6 May 2010
what occurred.
C)
SInstalled 17
March 2010
"Installed 6 October 2010
WF -1 through 7 WH years calculations
start at 2011.
rn�