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

-n_
CD
=r_
� v
c 3
v-0
v Cn
0-0
C/)-
3 n
3 m
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CD
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6)
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v
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-nn
CD 0
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v v
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Table 12a. Summary of occurrence of hydroperiods and drought status from 2009 to 2014 for 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 years of climatic data are added.
PDSI
PHDI
# 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
16
14.9
23.4
17.0
2
26.2
5
100
100
100
17'
<6
24.8
17.3
17.4
24.8
4
80
66
75
42
<6
25.5
23.7
6.4
26.2
4
80
66
75
53'
<6
25.5
17.7
28.7
26.6
4
80
66
75
67'
9.5
25.9
16.6
25.5
15.6
5
100
100
100
702
<6
7.8
7.1
24.8
12.8
4
80
66
75
75 3
<6
19.9
15.9
26.6
24.8
4
80
66
75
794
<6
7.1
<6
<6
<6
1
20
33
25
82 4
<6
19.9
14.1
12.8
12.8
4
80
66
75
915
<6
<6
<6
7.1
6.4
2
40
0
25
92 5
12.8
25.5
23.7
27.6
5
100
100
100
93 5
7.4
22.3
23.7
15.9
13.1
5
100
100
100
944
<6
<6
<6
<6
<6
0
0
0
0
123 4
<6
18.8
6.7
7.8
24.1
4
80
66
75
UT1-1A6
<6
<6
<6
7.1
13.1
2
40
0
25
UT1-1 C'
<6
23.4
8.8
7.8
13.1
4
80
66
75
UT1-2A'
<6
19.9
17.0
26.9
26.2
4
80
66
75
UT1-2C6
<6
25.5
23.7
28.7
29.1
4
80
66
75
UT1-3A'
<6
25.2
15.5
26.9
25.9
4
80
66
75
UT1-3C6
<6
25.2
17.0
26.6
25.6
4
80
66
75
UT2-1A$
7.4
22.7
23.7
26.2
26.2
5
100
100
100
UT2-1 C$
8.9
22.7
23.7
27.3
26.2
5
100
100
100
UT2-2A$
<6
19.5
17.7
30.5
25.5
4
80
66
75
UT2-2C$
<6
19.9
23.7
30.5
29.1
4
80
66
75
PDSI
NN
BN
NN
AN
AN
PHDI
NN
BN
BN
NN
AN

-n_
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=r_
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m v
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v-0
v Cn
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CD
0
0
0
v
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-nn
CD 0
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m (7
Table 12a. (continued)
PDSI
PHDI
# 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
UT3-1A9
7.1
22.7
17.0
26.2
26.2
5
100
100
100
UT3-1 C9
8.5
23.4
17.3
26.9
27.0
5
100
100
100
UT3-2A9
<6
19.9
9.9
26.6
25.2
4
80
66
75
UT3-3A9
<6
23.4
8.8
15.9
15.6
4
80
66
75
UT3-3C9
<6
19.5
9.5
17.7
8.5
4
80
66
75
UT3-4A10
<6
16.7
6.4
15.9
13.1
4
80
66
75
UT3-4C10
<6
18.4
9.5
25.5
15.6
4
80
66
75
UT3-5A10
<6
23.8
20.8
56.7
25.9
4
80
66
75
UT3-5C10
<6
19.9
16.3
15.9
25.5
4
80
66
75
UT3-6A9
<6
23.4
14.8
8.2
15.6
4
80
66
75
UT3-7A7
<6
18.8
8.8
15.9
15.6
4
80
66
75
UT3-7C'
<6
23.4
14.1
15.9
15.6
4
80
66
75
UT3-8A11
<6
23.0
16.6
26.6
25.2
4
80
66
75
UT3-8C11
<6
23.4
17.0
26.6
25.9
4
80
66
75
UT3-9A11
<6
24.8
22.6
28
26.6
4
80
66
75
UT3-9C11
<6
25.5
22.6
57.1
31.6
4
80
66
75
UT4-1Al2
8.9
19.9
14.1
25.2
25.2
5
100
100
100
UT4-1 C12
12.8
23.4
23.7
31.6
26.2
5
100
100
100
UT4-2Al2
<6
19.1
7.1
15.9
29.1
4
80
66
75
UT5-1A13
12.8
25.9
33.2
41.8
31.9
5
100
100
100
UT5-1 C13
8.5
23.0
16.6
25.5
25.2
5
100
100
100
UT5-2A13
<6
16.7
9.9
27.3
13.1
4
80
66
75
UT6-4A14
<6
18.4
10.2
25.2
15.6
4
80
66
75
UT6-4C14
<6
7.1
9.9
15.9
15.6
4
80
66
75
UT6-5A14
<6
<6
11.3
25.2
16.0
3
60
33
50
UT6-5C14
<6
<6
<6
15.9
13.1
2
40
0
25
UT6-6A14
<6
19.1
15.5
26.6
25.5
4
80
66
75
UT6-6C14
<6
18.8
10.2
25.5
16.0
4
80
66
75
PDSI
NN
BN
NN
AN
AN
PHDI
NN
BN
BN
NN
AN

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=r_
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m v
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v-0
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CD
0
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-nn
CD 0
V 3
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v v
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m (7
Table 12a. (continued)
PDSI
PHDI
# 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
UT7-1A14
<6
<6
6.0
15.9
13.1
3
60
33
50
UT7-1 C14
<6
8.2
6.4
16.3
13.1
4
80
66
75
UT7-2A15
<6
19.5
17.0
27.7
25.5
4
80
66
75
UT7-2C15
<6
18.8
14.1
26.6
25.2
4
80
66
75
UT7-3A15
<6
19.5
11.7
26.9
29.1
4
80
66
75
UT7-3C15
<6
18.4
14.1
63.8
39.4
4
80
66
75
UT8-1A10
<6
22.3
11.0
7.8
13.1
4
80
66
75
UT8-1 C10
9.6
23.8
23.7
26.6
26.6
5
100
100
100
UT8-2A10
<6
23.8
17.0
26.6
26.6
4
80
66
75
UT8-2C10
<6
23.4
15.9
25.5
16.0
4
80
66
75
UT8-3A10
<6
18.8
9.5
17.4
24.8
4
80
66
75
UT8-3C10
<6
23.4
16.3
25.1
16.0
4
80
66
75
UT8-4A10
6.4
25.5
23.7
26.9
27.0
5
100
100
100
UT8-4C10
9.6
27.7
26.5
28.7
29.4
5
100
100
100
UT8-5Al2
<6
<6
<6
<6
7.8
1
20
0
0
UT8-5C12
<6
<6
<6
7.1
13.1
2
40
0
25
UT8-6Al2
<6
23.4
16.6
26.6
26.2
4
80
66
75
UT8-6C12
<6
25.2
23.3
27.3
27.0
4
80
66
75
USC -1A13
12.8
27.0
26.1
31.2
29.8
5
100
100
100
USC -1c"
12.8
27.7
33.2
28.7
16.7
5
100
100
100
USC -2A13
<6
7.1
<6
<6
6.0
2
40
33
25
USC -2C13
<6
22.3
6.7
6.7
12.4
4
80
66
75
USC -3C16
<6
18.4
8.1
15.9
15.6
4
80
66
75
USC -4A17
<6
18.8
6.4
7.4
12.8
4
80
66
75
USC -4C17
<6
18.8
8.1
7.8
12.8
4
80
66
75
USC -5A17
<6
25.5
33.2
56.7
45.4
4
80
66
75
USC -5C17
<6
25.5
25.1
27.3
30.1
4
80
66
75
USC -6A17
12.8
28.4
26.5
56.7
31.2
5
100
100
100
PDSI
NN
BN
NN
AN
AN
PHDI
NN
BN
BN
NN
AN

-n_
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=r_
� v
c 3
v-0
Cn
0-0
C/)-
3 n
3 m
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CD
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0
v
3E
-nn
CD 0
V 3
C:
v v
N �
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C (7
Table 12a. (concluded)
# 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
USC -6C17
12.8
28.0
33.2
26.7
45.4
5
100
100
100
USC -7A17
12.8
27.7
33.2
30.8
31.2
5
100
100
100
USC -7C17
12.8
29.4
33.2
31.2
33.7
5
100
100
100
USC -8A17
12.8
28.0
26.9
31.2
31.2
5
100
100
100
USC -8C17
12.8
27.0
25.1
30.8
30.9
5
100
100
75
USC -9A18
<6
22.3
16.6
25.5
29.1
4
80
66
75
USC -9C18
<6
22.0
17.0
26.9
29.1
4
80
66
75
USC -10A18
<6
25.5
23.7
30.5
30.1
4
80
66
75
USC-11Al2
12.8
27.7
33.2
26.7
31.6
5
100
100
100
USC -11C12
12.8
31.9
33.2
33.3
34.0
5
100
100
100
USC-12Al2
6.7
27.7
23.3
27.6
31.6
5
100
100
100
USC -12C12
12.8
31.9
33.2
39
35.1
5
100
100
100
USC -13Al2
12.8
29.4
33.2
32.2
31.6
5
100
100
100
USC -13C12 1
9.6
25.9
22.6
27.3
29.4
5
100
100
100
PDSI
NN BN
NN AN AN
PHDI
NN BN
BN NN AN
If no installation date is given, well
was installed before 28 Feburary 2010.
'Installed 24 March 2010
12 Installed 25 May 2010
2Installed 31 March 2010
13 Installed 1 July 2010
3Installed 26 March 2010
14 Installed 16 June 2010
4Installed 8 April 2010
15 Installed 30 June 2010
Slnstalled 6 May 2010
16 Installed 26 July 2010
6Installed 27 May 2010
17 Installed 18 July 2010
7Installed 26 May 2010
18 Installed 18 May 2010
Slnstalled 2 July 2010
Italicized= Well malfunction resulted in an estimation of exact hydroperiod length and so
Slnstalled 3 June 2010
reported hydroperiod could possibly be shorter than what occurred
10 Installed 9 June 2010
11 Installed 2 June 2010