REGION X
 EILL
LY
  E
              QUALITY DATA
         ENVIRONMENTAL
         PROTECTION
         AGENCY
         SEATTLE, WASHINGTON
 WORKING IPAIPEE MO;
      °91
oEo

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A SUMMARY OF THE WATER QUALITY DATA RECORD
FOR SOUTH PUGET SOUND, 1934 TO 1967
PREPARED BY
Annette M. Olson—Forster
for
John R. Yearsley
Surveillance and Ana1y is Division
E.P.A. REGION X
1200 6th AVE.
SEATTLE, WASHINGTON 98101
i
EPA—910/ 8—75—094
September, 1975

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ii

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/
A Working Paper Presents results of investigation which
are, to some extent, limited or incomplete. Therefore,
conclusions or recommendations——expressed or implied——
may be tentative.
iii

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Iv

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TABLE OF CONTENTS
Page
DEFININCTUEPROJECT 1
THE DATA BASE 2
Origins 2
Format 2
Restrictions 3
REDUCTION OF THE DATA 4
calculations
Assumptions and Conventions 5
Selection of Parameters, Stations, and Sampling Periods 7
OUTPUT
Figures 9
Description of Output 9
MONITORING STRATEGY 11
TABLES 13
FIGURES 29
V

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vi

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DEFINING THE PROJECT
Concern about pollution of the sub—region of Puget Sound south
of Tacoma Narrows (Figure 1.) resulting from military, industrial and
metropolitan development led to this investigation. Until recently,
most investigators concentrated their studies on the Central Basin, paying
little attention to South Puget Sound.
A large body of physical and chemical oceanographic data is
recorded for the South Sound, 1 but the inventory contains little
recent data. This project determines some statistical characteristics
of the water quality data base by reducing it to monthly and annual
mean values of several parameters at selected sampling stations over
certain sampling periods. These statistical analyses will be used
for water quality modeling of the South Puget Sound eco—system, to
determine future sampling needs, and to define monitoring strategies
for assessing the impact of military, industrial, and metropolitan
growth upon that system.
‘Collias, Eugene E. Index to Physical and Chemical Oceanographic
Data of Puget Sound and its Approaches, 1932—1966 , University of
Washington, Department of Oceanography, Special Report No. 43, 1970,
pp. 400—467.
1

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THE DATA BASE
Origins
The State of Washington Department of Fisheries, and the University
of Washington sampled intermittently in the South Sound from 1932 to
1967, without a comprehensive sampling plan. In 1970, CollIas published
an index of this data base, summarized by stations (defined as sampling
occurring within a one—mile radius of the station location). 2 Parameters
measured generally included temperature, salinity, dissolved oxygen gas
(DO), dissolved inorganic phosphate, and sulfite waste liquor——nitrate
or nitrite nitrogen, silicate—silicon, and alkalinity were less frequently
measured.
Format
This data was acquired by the Environmental Protection Agency and
stored in STORET, a large on—line data storage and retrieval system.
The data Is stored by sampling station and is retrievable by specifying
the stations, the parameters, and the beginning and ending dates desired.
The retrieval is both printed out and stored in a temporary data set by
three major card groups——station heading cards (detailing information
on geographic location, depth to sediments in feet below mean low low
water, and standard station number of the sampling station),parameter cards
(specifying names and dimensions of parameters), and data cards (recording
the date, time of day and depth at which readings were taken, and the
parameter readings).
2__Id.
2

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Restrictions
Although the retrieval system provides an option for computing
means of the parameter values for specified time periods, stations, and
high and low parameter values, no provision is made for taking into
account the depth at which the readings were taken. The means generated,
therefore, simply average equally weighted values of the parameters
over the entire water column, implying equal depth—spacing of the
readings. Since samples are generally taken closer together near the
surface and at increasing intervals with greater depth, this method of
computing means tends to assign greater weight to near—surface values——a
bias particularly great in deeper stations.
Because the retrieval data set format is not suitable for performing
calculations on the data, it is necessary to edit the retrieval before
alternative modes of calculation can be employed.
3

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REDUCTION OF THE DATA
Calculations
In order to overcome some of the limitations of the STORET retrieval
system, a FORTRAN program was written to calculate monthly or annual
depth—means of selected parameter values by station. The sampling time
period, the stations, and the parameters are specified in the retrieval.
The data cards are edited and read onto a temporary data set which is
sorted——using a system utility routine——by station, year, month, and depth
of reading and stored in a second temporary data set. The FORTRAN program
reads this sorted data set to first average together the readings of a
parameter taken at the same depth within a single month, then to calculate
the depth—means by month and to print them In a table format or to write the
them in a permanent data set for use in further calculations.
A depth—mean is a step—wise function which averages parameter readings
that have been weighted by the associated change in depth between readings.
Greater weight is given to readings taken at larger depth—intervals than
to those taken at short intervals. The algorithm for this function is
CTOTL=(Zl_Zo+Z2 1)C 1 + ( Z2 _ Z1+Z3 _ Z2)C +...
• .+ (ZN_Z .] 47 , _Z)
and
CMEAN CTOTL / Z
there Z is the depth at which parameter concentration reading (C 1 ) was
4

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taken, and where Z O and is the depth to the sediments. This
algorithm generates a mean value of the parameter over the entire water—
column, without the bias toward closely spaced readings, resulting from
an arithmetic mean. (For ease of manipulation, an equivalent
formulation
CTOTL=(Z 1 —Z 0 )(C 1 ) + (z 2 _z 1 )(Cl 2) +...+ (ZN+l_ZN)(CN)
was used for actual computer calculations.)
By the use of this algorithm, the change in depth between the surface
and the first reading (Z 1 —Z 0 ) is multiplied by the first parameter value
(C 1 ). If a reading is taken at the surface, where Z 0 =O=Z 1 , the value
Z 1 —Z 0 equals zero and the product C 1 (Z 1 —Z 0 ) also equals zero. But, if
the first reading is taken a great distance below the surface where
Is large, it is possible to attribute a greater weight to the first
reading of the parameter concentration. (The same situation holds for
the weight of the last reading (ZN+l—ZN), where the product CN(Z l—ZN)
equals zero if the last reading is taken at the bottom and becomes large
if taken at a great distance above the bottom.)
Assumptions and Conventions
Implicit assumptions in this method of computation and conventions
adopted are discussed below.
Samples taken at a station on different days within a month are
assumed to be taken at the same location (cf. Collias, where a one—
mile radius defines each station 3 ). No weight is given to the sampling
3 mid., p. 5.
5

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interval during a month, which is equivalent to assuming that a sample was
taken at one time of a single day with multiple readings at some depths.
Parameter values measured more than once at a given depth are averaged
together to produce a single parameter value for that depth, regardless
of the day of the month or the time of day of the multiple readings.
Parameter values (Ci) thus obtained are assumed to be representative of
that parameter for an associated depth range, defined generally by
Z Z _ + Zj+L _ Zj
2 2
(and by
z —z +
10 2
for the shallowest reading, and by
ZN-ZN _ i + z -Z
2 N+l N
for the deepest reading of Ci).
Parameters for which no readings are recorded at a given depth are
not used in the calculation of the average value for that depth nor in
the calculation of the depth-mean for that month. Furthermore, if no
readings are recorded for a given parameter throughout an entire month,
the monthly mean of that parameter is assigned a value of zero and is
not used in further calculations.
The sampling is assumed to have occurred from a surface located at
mean low low water (MLLW). That is, a sampling depth of zero is assumed
6

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to be at MLLW and the bottom is assumed to be at the station depth in
feet below NLLW. The depth to sediments used in the computations (Z 1 ),
however, is assumed to be the station depth, or the depth of the deepest
reading, which ever is greater. A reading depth larger than the station
depth could result from sampling in a different location than the standard
station location (within a one—mile radius) or from a tidal height at some
distance above MLLW. In either case, the “bottom” is established——for
purposes of calculation——at the depth in feet of the deepest data record
(rather than at the station depth).
Selection of Parameters, Stations, and Sampling Periods
Parameters for summary were selected on the basis of completeness of
coverage, reflecting the classical selection of water quality parameters——
water temperature measured by reversing thermometers, dissolved oxygen gas,
salinity (an indicator of residence time and density), and dissolved
inorganic phosphate (a nutrient).
Sampling stations and time periods were chosen initially by
examination of the raw data and of Collias’ Index. 4 The period from
January, 1953, to December, 1954, shows good consecutive—month sampling
at the generally deep stations east of Case Inlet in South Puget Sound;
while from January 1957, to December, 1958, consecutive—month coverage is
fair at the generally shallow stations in the waterways west and south
of Case Inlet. Retrievals were run on an on—line facility for all known
stations during these time periods, monthly means were celculated for
each parameter by station, and the output was stored in a permanent
4 mid .
7

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data set for use in further calculations. The In—house WANG computer was
used to transfer the permanent data set from the on—line facility to disk
and to calculate the mean and standard deviation of each parameter over the
two year period. Tables 1 and 2 were prepared from this output.
By examination of these tables, ten stations were selected which
showed good contiguous data coverage and which were determined to be rep-
resentative of each of the major inlets and passages in South Puget Sound.
(Representativeness was based on location of the station approximately
mid—way between the mouth and the head of the inlet or passage.) An
eleventh station (407) was chosen for the length of its data record——nearly
100 months of sampling during the 1934 to 1967 period. Monthly and annual
means were calculated for the entire data record of station 407 (Tables
3, 4A, and 4B), and monthly means were calculated for the two year periods
at the ten representative stations (Tables 5 to 14). Plots were prepared
from these tables (Figures 2 to 7).
8

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OUTPUT
Figures
Figure 1 is a map showing the location of sampling stations in
South Puget Sound (excluding those for which insufficient data was
found). On this map, a small, dark triangle (A) represents stations
shown in plots (Figures 2 to 7), while a small, dark circle (s) denotes
stations appearing in Tables 1 and 2. Figure 2 shows plots of monthly mean
temperature and DO readings over the period from 1951 to 1967 at station
407 (prepared from Tables 4A and 4B), while Figures 3 to 7 are plots of
monthly temperature and DO means at the ten representative stations over
two year periods (from Tables 5 to 14).
The plots are keyed by quarter——an open triangle (tb) represents
winter (01 to 03); a solid circle (0), spring (04 to 06); a solid tri-
angle (A), summer (07 to 09); and an open circle (0) represents fall
(10 to 12). This keying provides a basis for comparison between data
points in different years or in plots at different stations or of unlike
parameters. The vertical (i.e., temperature and DO) scales are identical
in height and value on all keyed plots for further comparability of output.
Description of Output
The sampling stations shown in the plots (Figures 2 to 7) can
generally be considered in two groups. The eastern stations (406, 407,
and 419) are deep, with station depths ranging from 209 to 298 feet, while
the western stations are generally shallow with depths ranging from 49
9

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to 59 feet (with the exception of station 452 at 180 feet).
Plots of the deeper, eastern stations (Figures 2 and 3) show a
distinctive, smooth annual temperature cycle with the mean ranging from
10.1 to 10.4°C and the standard deviation ranging from 1.6 to 1.7°C
(from Table 1), for the period from 1953 to 1954. A somewhat less smooth
annual DO cycle has mean values ranging from 7.5 to 7.7 mg/i with the
standard deviation ranging from 1.0 to 1.1 mg/l for the same t year period.
The temperature cycle is inversely related to the dissolved oxygen cycle
at these deep stations. Plots of annual parameter means at station 407
(1951 to 1967) were prepared, but were not included in this report because
the distribution of data points was biased due to erratic sampling intervals.
The shallow western stations (Figures 4 to 7) show a fairly smooth
annual temperature cycle with mean values ranging from 11.2 to 13.4°C
and standard deviations of 2.4 to 4.0°C, accompanied by a rather rough
DO curve with mean values of 7.9 to 8.4 mg/l and standard deviations of
1.0 to 1.5 mg/l (from Table 2). A weakly inverse relationship exists
between the temperature and dissolved oxygen in these shallow stations.
10

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MONITORING STRATEGY
The statistical analyses presented in this report point to a need for
strategic monitoring in South Puget Sound. The seasonal variations of
depth—averaged water quality parameters (temperature and DO) in the deep
stations are smaller and more predictable than in the shallower stations.
Here the more stable status of the deeper waters mitigates t1 effects of
short—term influences on the surface waters. Long—term monitoring of water
quality trends could, therefore, be accomplished by monthly observations at
a few representative deep stations, such as Devil’s Head (407) or Nisqually
Reach (406).
Within the shallow embayments such as Budd or Eld Inlet, however,
seasonal variations are greater and more random in appearance, resulting
from high—frequency sub—cycles (eg. the effects of diurnal light,
temperature, and tidal cycles) which cannot be detected by the monthly
sampling interval. High—frequency sampling will be required in these
areas to determine the nature, as well as the extent, of variation
iii water quality.
11

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12

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TABLE I SU1MAR’ OF WATER QUALITY E ATH RECORD BY STATION
SOUTH PUOET SOUND. 1953 TO 1954
STAT I ON tJL.ME EP
r IuMEER
riot irks
IJATEP TEMP
CCEtJT
AVE SW
D C’
(MG/L>
AVE STE
SALIr4IT’i’
(PPTH
AVE
STO
PHOS (ORTHO)
(MG/L F;
AVE S W
I - ’
406
24
102
16
7.7
10
31
061
0007
0001
407
24
104
17
77
10
2?12
063
0007
0001
411
12
99
14
76
10
905
056
0007
0001
412
11
i’: o
15
76
11
2904
061
0007
0001
413
11
100
15
75
11
2902
063
0007
0001
414
11
101
16
72
13
2 97
064
0007
0001
415
11
101
15
72
12
2901
061
0007
0001
41 ’S
11
101
7
14
2399
063
0007
0001
417
11
105
36
20
2390
064
0007
0002
41?
I i
105
ES
19
2350
053
0007
0.001
419
24
ILl
16
75
11
29 0
060
u007
00W.
420
11
101
16
77
16
2296
052
0007
0001
421
14
1 1i6
17
76
1.5
2313
071
0 107
0001
422
11
104
19
84
15
2351
1.17
0037
a002
422
11
105
22
87
14
2343
074
00.36
0002
426
11
11:12
is
si.
12
2357
0.62
0007
002
422
:
its
os
SI
04
2 S7
012
02106
aooo
433
3
117
09
3.2
05
23.80
015
0.006
aoos
424
3
135
09
34
1.9
22.37
3.20
0005
0.002
436
3
123
39
31
0.7
28.65
0.16
0.036
WOO l

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TRE’L€ 2 .:.F (lF 1ER OUFILITY DA7 t EECORL’ LV STATIOF J
IG.jTH ELIOET !C:J;.D, 1957 TO iSS?
STATION £JUrEEP pI ATEF TEF 1P 0 0 SALI NItY PHOS CORTHO)
NUflEER cr (C ENT cr lG/L) (PPTH) (N0F’L P)
Fr:E SIP AVE SW flVE 5 11 AVE STO
4C5 10 7 1 7 7 1 C : 7 29 59 0 43 0 037 0 002
43€ 99 21 7? 10 2925 052 0007 0002
437 10 101 21 74 15 2928 053 0007 0002
4s1 7 10 20 74 10 2353 054 0037 0002
41: 5 93 20 77 10 2939 049 0037 0002
42€ 7 133 20 74 10 2 46 054 0007 0002
419 9 93 20 77 11. 2336 050 0007 0002
421 9 29 20 30 12 2326 052 0033 0002
42 : 110 23 es 12 2902 05 0007 0002
C l 17 110 3 7.6 11 2322 045 000? 0031
2 31 10 90 13 2: 66 009 0000 0030
8:: 1€. 111 24 7? 12 23u7 046 0007 0002
4:4 1 1 11 31 22 I i 2859 0.55 0307 0032
4 : 6 1 131 21 83 13 2255 03? 0333 0032
C? 12 139 41 36 14 2770 137 coos 0002
4:; 17 111 27 80 11 2661 053 0007 0002
441 9 1:0 24 79 13 2305 053 0006 0031
442 2 119 42 &1 36 2379 042 0037 0001.
4 3 .E 105 23 15 10 237? 02? 0005 0002
1 15 71 23 2358 026 0038 0001
452 1 112 26 79 11 2390 049 0(107 0001
453 13 119 30 33 14 2377 052 0007 0002
C S 125 4 58 07 234S 047 0007 0001
$55 ..3 . :: :5 0.4 14 2901 102 0007 0002
s: 124 4 79 13 2229 393 0037 0001
45 5 7 133 5 32 13 2344 03 0007 0002
4€s 119 26 32 15 357 059 003? 0001
462 5 91 20 86 27 2305 04i 0009 0Ci01
4€: i .: 122 2? 67 23 2326 073 0009 0.0.32
4f5 23 11? 29 33 15 2373 060 0.007 0001
19 120 31 32 ir: 2650 066 003? 000i
467 1 ’. ’ 12? :i 76 15 :s s ’ 0.75 0003 0001
47: 20 122 34 35 15 2826 028 0007 0002
474 23 12 6 3 9 3 3 1 3 7 93 0 38 0 067 0 032
475 7 133 44 81 1 27.93 138 0033 0031
47 6 12’ 1.?? 39 62 15 27.22 2.70 0.007 0001
43 7 121 33 77 14 2”.IS 2.59 0.007 0001
4 :2 15 1:4 40 81 12 2674 250 3.007 0001
465 15 136 44 7.9 1 1 2546 233 0007 0031
41? 15 14,2 49 74 12 25.26 3.03 0037 0.001
490 7 15€ 44 7.6 12 24.79 2.51 0.007 0.031

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TABLE 3. SUMMARY OP WATER QUALITY DATA RECORD BY YEAR
51)11TH PUGT SOUND, STATION 407
ANNUAL DEPTH—AVERAGE
WATFR 01) SALINITY PHOS—DIS
YEAR TFMP. ORTHO
CENT. M 1/L PPTH MG/I P
34 11.6 7.2 28.85 0.01)5
35 11.6 8.2 29.25 0.004
36 9.6 8.? 29.26 0.008
37 7.4 .7 29.42 0.010
38 12.6 8.5 29.15 0.005
40 1 ).? 7.8 29.14 0.005
41 14.3 8.3 29.88 0.004
51 7.4 8.7 27.66 0.0
5? 10.2 6.9 29.77 0.0
53 10.6 7.6 ? .5? 0.007
54 8.1 28.60 0.007
55 8.6 8.4 28.94 0.007
56 6.3 0.8 28.04 0.008
57 9.4 7.7 29.22 0.007
58 11.1 6.8 29.39 0.008
59 10.2 7.6 28.85 0.008
61) 8.7 7.9 28.84 0.008
6% 9.9 7.8 28.81 0.007
6. 7.? 8.6 29.13 0.009
63 12.0 6.6 29.91 0.007
64 9.4 7.8 29.56 0.007
65 10.3 7.7 29.24 0.007
66 9.8 8.7 29.07 0.006
67 9.0 9.2 28.96 0.006

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TARLF 4A. SIIMMt RY OF ‘447F4 QUALITY DATI\ RFC )R0 Y MONTH
SOuTH PuIC, T SOUND. STATION 607
MONTHI V DEPTH—AVER AC F
WaTER 1 )1) SAl. INI TV P 1- 1( 15—1)15
YFAR.M ONT,- l TFMP. 0 41 1-I n
CENT PPTH M(/l P
34.04 9 , 4.6 7R•27 0.005
34.07 11.0 6.3 79.23 0 fl04
3 5fl7 11.6 4.2 29.75 0.004
1A .0J 8.3 4.2 29.51 0.00 4
11.0 4.? 74 97 0.0
37.04 7.6 6.7 79.4? 0.010
34.07 12.6 4.5 29.15 0.005
60.07 4.9 7.9 2Q.17 0.007
40.07 13.2 7.8 ?9.1 0.003
6l.flR 14.3 R•3 79.88 0.004
7.4 8.7 77.66 0.0
52.04 4.2 6.2 79 .06 0. 1)
7.n5 10.1 4.9 29.25 0.0
67.10 17.6 6. 6 30.14 0.0
52.11 11.5 6.0 30.33 0.0
52.12 Q 4 6• 9 30.79 0.1)
53.1)1 8.’, 7.7 79.48 0.0
53 1)7 8•3 8.5 28.79 0.0
53.03 4.7 4.5 24.70 0.0
53.04 8.4 4.7 29.1)7 0.0
9.3 79.16 0.0
53.04 )0.9 7.4 29.18 0.0
41.07 12.4 7.2 29.29 0.007
63.08 13.0 6.6 7Q S7 0.006
53• 09 13.1 7.0 30.02 0.1)07
53.10 17.1 6.7 29.97 0.007
53.11 11.3 6.7 29.43 0 .0 09
53.1? 10.3 7.5 29.8? 0.009
54.01 9.7 1.9 ?M .5() 0.00 6
54.07 8 .1 4.5 78.05 0.007
5t. .03 7.9 H•9 77•Q0 0. 007
54.04 4.6 8.7 24.13 0.007
54.05 9.2 9•5 78.34 0.006
44.06 10.7 9.? 28.85 0.01)6
64.07 11.4 4 .0 2 .45 0. 00 4
64.08 12.6 7•9 29.00 0.006
54.09 17.2 6.3 29.54 0.006
56.10 11.6 6.3 29.67 0.01 ’?
54.11 10.9 .5 79.61 0.004
54.12 9.7 7.2 29.23 0.006
5 5.0 1 6.7 7.9 78.94 0.004
55.07 4.0 4.0 79.66 0.004
54.03 7.3 4.1 74.69 0.004
55.05 8.6 10.4 7R•86 0.005
55.11 10.6 6.5 79.50 0.006
56.01 7.1 R.5 28.19 0.009
56.07 6.3 6.8 28.03 0.006
57.01 7.4 8.0 26.85 0.006
57.04 7.6 8.9 28.72 0.007

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TARL 4 9. SIJMMtRY flP WATFR OIJAL liv IIATA RECORD 6Y MONT9
SO(JTH PIU T SfltINfl. STATION 407
MONT9LY F)EPTH—AVERAOE
WATER no SALINITY PliOc—DIS
YFAR.MONTH TFMP. ORTHI)
CENT Mr,/L PPTH Mr,/I p
57•05 9.7 9.6 29.75 0.0
‘57.06 10.6 29.97 0.004
57.11 17.0 4.6 30.02 0.000
57. 12 10.3 6.9 30.01 0.007
59.07 9.7 7.1 29.03 0.009
59.09 14.4 6.1 29.75 0.007
59.11 11.? 6.9 29.72 0.0
59.17 10.1 7.1 79.05 0.000
99.03 .5 78.22 0.007
59.06 10.7 9.4 29.6 ! 0.006
17.1 6.5 79.59 0.009
59. !? Q•7 7.0 79.97 0.00
60.01 7.9 7.9 29.66 0.009
60.05 P.R 2 9. SQ 0.007
60.12 7.3 29.23 0.000
0.0 9.7 0.007
61.!! 10.9 6.7 79.93 0.009
62.03 7.2 9.6 29.13 0.009
63 .1)9 13.3 6.5 79.90 0.007
63.10 12.9 6.? 30.10 0.007
63.11 11.4 6.9 29.90 0.007
61.!? 10.2 7.7 7 9•3 6 0.009
64.0! 9.4 7.7 7 9• 99 0.009
66.0? 8.5 9.5 79.25 0.009
64.03 8.! 9.9 29.29 0.0 17
64.04 8.6 9.? 29.61 0.006
64.05 9.9 9.2 79.49 0.006
64.06 10.7 9.2 29.07 0.006
64.07 11.9 7.4 29.27 0.006
64.09 17.6 7.0 79.37 0.007
17.6 6.9 79.54 0.007
64.10 1?.? 6.6 79•6 9 0.007
64.11 11.0 6.4 2R.7 0.007
64.12 9.7 .R 7q 44 0.009
65.01 7.6 7.9 29.99 0.000
69.02 7.4 9.1 7R 33 0.009
65.03 7.7 4.3 2R.?7 0.009
65.04 9.0 8.6 7 9 55 0.007
69.05 0.1 R.5 ?R. 5 0.006
65.06 10.9 8.1 79.16 0.006
65.07 17.5 7.7 79.42 0.006
65.09 13.7 7.4 79.67 0.006
65.09 13.1 6.9 70•qQ 0.007
65.10 12.4 6.3 30.19 0.009
65.1! 11.5 6.4 30.13 0.009
65.17 10.2 7.0 79.96 0.009
66.05 9.9 9.7 20.07 0.006
67.05 9.0 9.2 29.96 0.006

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TABLE 5. SUMMARY OP WATER OIJALITY DATA RECORD BY MONTH
Sfl(JTH PLIGT SIJIJNO, STAT IflN 406
MONTHLY DEPTH—AVER E
WATER nfl cALINITY PHUS—DIS
YEAR.MDNTH TFMP. QRT 1fl
CENT MG/I. PPTH MG/L P
53.01 M•7 7.8 79 9R 0.0
53.0? 8.3 H R 2 .03 0.0
53.03 8.7 8.5 78.93 0.0
53 04 A . M 3 29.21 0.0
53.05 9.3 8.9 79.40 0.0
53.06 11.0 8 .0 79.1? 0.()
53.07 17.2 7.? 29. 13 0.006
53.08 17.7 6.5 79.57 0.007
53.09 12. ’ 6.5 30.07 0.007
53.10 12.0 (.7 79.85 0.007
53. 11 11.2 6.1 29.RR 0.008
53.12 10.3 7.2 29.80 0.008
54.01 Q.2 M.D 78.48 0.008
54.0? 8.1 8.5 28.20 0.007
54.03 7.8 8.8 78.12 0.007
54.04 8.4 8.8 28.31 0.007
54.05 9.0 9.4 28.06 0.005
54.06 10.? 8.0 28.97 0.006
54.07 11.0 7.7 78.95 0.006
54.08 12.3 7.8 29.04 0.0
54.09 12.1 6.4 29.54 0.008
54.10 11.6 6.5 29.64 0.007
54.11 10.7 6.3 29.8? 0.008
54.12 9.8 7.1 29.39 0.008

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TARLF 6. SUMMARY OF WATER QUALITY DATA RECORD RY MONTH
SOUTH P(JG..T SOUND, STATION 419
MONTHLY DEPTH—AVERAGE
WATFR 0 1) SALINITY PHOS—DIS
YEAR.MOMTH TEMP. ORTHO
r.ENT MC,/L PPTH MG/I P
53.01 M. 6 7.R 30.0? 0.0
R.1 R. 29.04 0.0
53.03 R.7 R.3 7A.9R 0.0
53.04 H .3 14.1 29.74 0.0
53.05 9.2 R.5 29.30 0.0
53.r)6 10.7 7.9 ?Q• 26 0.0
53.07 11.9 6.4 29.37 0.007
53.1)8 11.9 6.7 29.92 0.006
53.09 17.6 0.0 30.03 0.007
53.10 17.0 5.9 30.15 0.0014
53.11 11.4 6.0 30.09 0.008
53.1? 10.4 7.0 29.97 0.008
54.01 9.3 14.0 28.145 0.0014
54.0? 14.0 R• 6 214.35 0.0014
54.03 7.9 8.14 28.12 0.0
54.04 14.4 14.7 714.31 0.007
54.05 9.0 .h 214.55 0.006
54.06 10.2 7.’ 214.97 0.007
54.07 11.1 14.0 28.94 0.006
54.014 1 1.. 7.? 79.10 0.006
54.09 11.14 5.8 29.66 0.008
54.10 11.5 5.8 29.79 0.0014
54.11 10.9 6.1 29.85 0.006
54.12 9.14 7.0 29.43 0.007

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TABLE 7. SUMMARY OF WATER OIIALITY DATA RECORD BY MONTH
61) 1 1TH P(JGET 50h1N0, STATION 434
MONTHLY DEPTH—AVFRAI,E
WATER SALINITY P80 5—0 15
YEAR.MONTH TEMP. ORTHf)
CFNT M( /L PPTH MG/I P
57. 1 )1 ç• 7 8.3 ?M .4 6 0.009
57.05 11.2 10.9 28.07 0.0
57•fl4 17.? 8.1 28.41 0.004
57.08 16.1 10.0 ?9.04 0.009
57.11 11.5 5.7 7977 0.009
57.12 8.1 9.0 28.34 0.008
58.01 8.3 8.0 ?R.?h 0 .()
58.0? 8.6 6.8 28.74 0.009
58.03 8.5 27.67 0.007
58.1)4 9.7 9.0 ‘ .oi 0.005
58.05 17.1 10.0 28.24 0.006
58.06 1.3.3 8.7 78.33 0.008
58.07 17.2 7.9 78.68 0.006
58.08 16.4 7.0 ?A.RA 0.008
58.09 16.1 6.3 29.33 0.008
58.10 14.4 8.3 29.47 0.005
58.11 10.8 7.9 28.94 0.0
58.12 9.9 7.4 78.49 0.009

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TARLE q• SUMMARY OF WATER DUALITY DATA RECORD RY MONTH
SflIJTH P Jr ,T SOUND, STATION 441
N.)
MONT -4LY OEPTH—AVERA(,E
DO SALINITY
WATER
PHQS DIS
YFAR.MONTH
TEMP.
CFNT
PPTH
ORTHI)
MG/I ..
P
57. OR
13.4
7.5
2q.4R
0.006
57.12
9.1
7.7
29.24
0. O OH
5R.04
9.5
R.1.
2R.22
0.006
5R.C)5
12.1
10.2
7R.40
0.006
5B . 0
13.2
H.4
2M. 6 1
0.005
5R.07
15.0
R.1
29.01
0.006
5A.C IR
15.6
7.7
29.29
0.006
5R. 09
15.6
6.7
29.49
0.007
5R.l0
13.9
7.0
29.73
0.007

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TARL 9. SUMMARY OP WATFR QUALITY DATA RECflRD RY MONTH
SflIJTH P(J( . T SOuND, STAT1flN 45?
MONTHLY DFPTH—AVERAGE
WATER DO SALINITY PHI1S—DIS
YEAR..MONTH TEMP. ORT-IO
CENT MG/L PPTH MG/1 P
57.01 7.? A.? 28.69 0.008
57.05 ‘ .5 l O.9 ?R.44 0.0
57.fl6 11.7 8 .8 78 .64 0.004
13.6 7.9 29.21 0.007
57.11 10.7 5.7 29.76 0.008
57.12 9.0 7.6 28.79 0.008
58.01 8 .6 7.6 ?8.91 0.0
58.02 8.6 7.1 2 .51 0.008
58.01 8.5 8.1 78.75 0.007
58.04 9.3 8.6 28.18 0.006
58.05 11.6 9.6 28.49 0.005
58.06 12.9 8.3 78.67 0.005
58.07 14.7 7.8 29.01 0.006
58.08 15.3 7.6 29.33 0.007
58.09 15.4 7.5 29.54 0.006
58.10 l3. 7. 1 29.73 0.006
58.11 11.1 7.0 29.35 0.0
58.17 10.0 7.2 28.73 0.009

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TARLE 10. SUMMARY OF wATFR QUALITY DATA RECORD BY MONTH
SOUTH PU( T SO(JND, STATION 456
MONTHLY DFPTH—AVERA(E
DO SALINITY
WATER
PHOS—DIS
YEAR.MONTH
TEMP.
ORTUtI
CENT
M( ,/L
PPTH
MG/L P
57.01
5.9
R R
27.54
0.008
57.05
11.9
12.3
27.56
0.0
57.06
13.1
8.3
28.30
0.004
57.04
15.6
8•5
28.83
0.006
57.09
15.9
9.0
29.1?
0.006
57.10
13.6
5.5
29.41
0.C0R
57.11
ii.?
6.?
29.10
0.009
57 2
8.7
7.7
27.14
0.008
58.01
4.3
4.4
76.03
0.007
5R.O
8.5
7.8
27.23
0.008
58.03
4.3
4.5
26.70
0.006
58.04
10.1
R M
26.84
0.006
58.05
16.5
10.7
27.67
0.004
54.06
15.2
8.7
78.09
0.005
58.07
17.4
9.7
28.54
0.006
58.08
17.4
8.5
29.05
0.006
58.09
17.0
8.5
29.17
0.006
54.10
14.3
7.6
29.34
0.007
58.11
54.12
10.4
9.6
7.8
7.4
27.08
27.38
0.0
0.009

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TABLE 11. SUMMARY OF WATER (1IJALITY DATA RECORD BY MONTH
SOUTH PU(,: T SOUND. STATION 4 .l
MONTHLY DEPTH—AVERAGE
WATFR Dfl SALINITY PHOc—DIS
YFA9..MONTH TEMP. ORTHO
CENT MG/L PPTH MC,/L P
57.01 .7 R .4 28.19 0.008
57.05 10.7 12.1 28.11 0.0
57.06 11.9 8.8 78.58 0.006
57.08 14.5 9.5 28.95 0.007
57.09 14.7 R 4 29.32 0.007
57.10 13.4 6.2 29.50 0.008
57.11 11.3 5.3 29.50 0.009
- 58.01 8.5 7.8 28.32 0.0
58.02 8.6 7.1 28.20 0.008
58.03 8.4 7.8 27.74 0.007
58.04 9.5 8.6 27.96 O.O0(,
58.05 17.3 10. 28.24 0.005
58.06 13.6 9.0 28.44 0.005
58.07 15.7 0.0 28.81 0.006
58.08 16.1 29.15 0.007
58.09 15.8 8.2 29.35 0.007
58.10 l3. 7.3 29.65 0.007
58.11 10.9 7.4 28.53 0.0
58.12 9.9 7.2 28.19 0.009

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TARLE 1? • SUMMARY QF WATER QUALITY DATA RECORD 8? MONTH
SOtJTI-1 PIJGT SflIJND, STATION 466
MONTHLY DEPTH—AVERAI,E
WATER On SALINITY P81) 5— 015
YEAR.MONTH TEMP. ORTHI)
CFNT MG/L PPTH MC’/L P
57.01 6.) 77.90 0.008
57.05 10.5 Ii. ? 78.12 0.0
57.06 17.7 H R 28.47 0.004
57.08 14.7 8.7 29.06 0.01)7
I - f l
57.09 15.0 8.7 2 4.34 0.007
57.10 )3.6 7.0 2 .63 0.008
57.11 11.0 (.7 ?9•3 9 0.009
57.1? 9.1 (s .A 78.3 1 0.008
55.01 8.4 8.0 78.17 0.008
58.0? 8.6 8 .() 27.67 0.008
58.03 8.4 8.3 77.68 0.008
58.04 9.8 8.6 27.76 0.007
58.05 13.1 10.5 28.17 0.005
58.06 j4.4 9.6 28.41 0.006
58.07 15.3 0.0 78.75 0.006
58.08 16.3 8.5 29.12 0.008
58.09 16.3 6.8 29.39 0.008
58.10 14.2 7.4 29.53 0.007
58.11 10.8 7.1 28.65 0.0

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TA8LE 13. SUMMARY OF WATFR QUALITY DATA RECORD HY MONTH
SOUTH P(J1,rT SOIJNO. STATION 474
a’
MONTHLY DFPTH—AVERAGE
D I ) SALINITY
WATFR
PHO S—fl1S
YFAR.M1]NTH
TFMP.
ORTHI)
CFNT
M(/L
PPTH
MG/1
P
57.01
5.3
9 .0
?6.97
0.009
57.0 5
17.1
11.4
27.58
0.0
57.06
14.6
8.8
29.14
0.003
57.08
) 6.3
M.8
28.81
0.007
57. oq
16.5
R•5
29.1?
0.007
57 .)0
14.)
7.7
29.30
0.007
57.11
10.8
5.5
78.88
o ooq
57.1?
9.4
7.
27.5?
I )•OOR
59.01
9.2
9.2
76.95
0.007
S 8•07
8.6
8.0
76.70
0.008
58.03
8.4
8.5
76•43
0.007
58.04
10.0
8.3
26.99
0.006
58.05
15.1
10.4
27.69
0.005
55.06
15.
9.9
28.10
0.005
58.07
17.
6.8
28.65
0.007
58.08
1R.R
9.0
29.02
0.009
58.09
17.?
9.2
29.26
0.007
58.10
14.5
7.4
29.22
0.007
55.11
10.3
7.5
27.15
0.0
58.12
9.5
7.4
27.18
0.009

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TABLE 14.
SIJMMARY OF W TFR OIJALTTY DATA RECORD RY MflNT -’
SOiITI-4 P(JC,.T SOUND, STATION 4 4?
MONTI-4LY DEPTH—AVERAOE
WATFR D I ) SALINITY PHOS—DIS
YFA . .MflNTH TFMP. ORTR()
CFNT PPTH MG/1 P
57.08 16.7 7.1 ?M.?h 0.007
57 09 16.1 29.01 0.006
57.10 13.R 6.7 29.27 0.007
57.11 l0. 5.1 77.98 0.010
57.1? 7.7 8.5 23.7R 0.008
58.01 7.9 8.3 7?•95 0.007
58.02 8.4 8.3 23.77 0.007
58.01 8.3 8.6 23.35 0.007
58.04 10.9 8.4 23.49 0.006
58.05 16.4 .R 76.34 0.004
58.06 15.4 8.6 28.01 0.006
58.07 18.2 9.? 28.15 0.006
58.08 18.9 7.7 28.58 0.007
58.09 17.3 8.7 29.02 0.006
58.10 14.4 7.5 29.16 0.007

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28

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)J 438 1 I ‘ ee ‘
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66
46 46
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LEGEND: £ Indicates Stations
Shown in Plots,
Fig. 2to7
FIGURE . STATIONS IN SOUTH PUGET SOUND (After Collias)

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A
V V V V V
1951 1955
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DEPTH 282’
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1965 1967
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1965 1967

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I I I I 1191531 I I I V I I I I 1191541 I I I
YEAR S(MO NIH 5)
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DEPTH 298’
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I I I I I 9 3I I I I I V I I I I 1191541 I I I I
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DEPTH 298’
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YEARS(MONTHS)
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NISQUALLY REACH (406), 1953 to 1954
DEPTH 209’
A
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£00
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YEARS(MONTHS)

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ROCKY POINT (434), 1957 to 1958
DEPTH 59’
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YEAR S(M ONTHS)
KEY QUARTER
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MONTHS
01 to 03
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10 to Ii
HENDERSON INLET (441), 1957 to 1958
DEPTH 55’
£ 0 a
I I I 1191571 I I I I V I I I 1 1191581 I I
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DEPTH 55’
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DEPTH 59’
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200 200
‘ii DOVER POINT (452), 1957 to 1958 ARCADIA (456), 1957 to 1958
DEPTH 180’ DEPTH 49’
ALA
P1
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U i 150 150
I - • 0
£
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0.. l••t• I 1191571 I I I I I I I 1191581 I I I I I I I I 1191571 I I I I I I 119158!
0 YEARS(MONTHS) YEARS(MONTHS)
‘- I
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A Winter 01 to 03
0 • Spring 04 to 06
O A Summer 07 to 09
I-’ r?
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140 140
0.. ARCADIA (456), 1957 to 1958 DOVER POINT (452), 1957 to 1958
DEPTH 49’ DEPTH 180’
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I I I I 1191571 I I I I I I I I 1191591 I I I I I I I I 1191571 I I I I I I I 1191581
YEARS(MONTIISI YEARS(MONTHS)

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200’ 200
GULL HARBOR (461), 1957 to 1958 FLAPJACK POINT (466), 1957 to 1958
DEPTH 52’ DEPTH 49’
‘ -4 LA
LA
£ 150 A
15u
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rt I I I 1191571 I I I I I I 1191581 I I I I 1957 I I I I I 1191581
i— CD YEARS(MONTHS) YEARS(MONTHS)
I- ” ‘1
KEY QUARTER MONTHS
P3CD
‘1 9 A Winter 0 to 03
O CD • SprIng 04 to 06
‘.lpl
A Summer 07 to 09
0 FaIl tOto Ii
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140 140
GULL HARBOR (461), 1957 to 1958 FLAPJACK POINT (466), 1957 to 1958
DEPTH 52’ DEPTH 49’
120 120
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pccn Z - .
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I I I I I I I I I I I I I 1191581 I I I I I I 1191571 I I I I V I I I 1191581 U
1957
YEARS(MONTHS) YEARS(MONTH$)

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DEPTH 55’
.
• £ A
0 AA S
0
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15
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KEY QUAPJER MONTHS
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1957 to 1958
£
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10 to I?
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100
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CHURCH POINT (482) , l 9 SlAto 1958
DEPTH 55’ A
a
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£
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1191571 I I I I V I I I 1191581 I I
YEARS(MONTHS)
CHURCH POINT (482), 1957 to 1958
DEPTH 55’
£ £
O AA. • A
A A o
0
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I I I 1191571 I I I $ V I I I I 1191581
EA a S (MO NTH SI
0
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NEW KAMILCHE (474), 195lAto 1958
DEPTH 55’ A
A
0
.
0 AA A
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YEARS(MONTHS)
I I I I 1191571 I I I I V I I I 1191581
YEARS(MONTHS)

-------