OFFICE OF ENFORCEMENT
EPA-330,
NATIONAL SHELLFISH REGISTER
CLASSIFIED ESTUARINE WATERS
1974
NATIONAL ENFORCEMENT INVESTIGATIONS CENTER
DENVER, COLORADO
DECEMBER 1 975
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ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF ENFORCEMENT
NATIONAL SHELLFISH REGISTER
OF
CLASSIFIED ESTUARINE WATERS
1974
December 1975
National Enforcement Investigations Center
Denver, Colorado
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CONTENTS
DEFINITIONS.
. . . . .
. . . . . . i v
I
INTRODUCTION
. . . . . . .
. . . .
1
3
II SUMMARY. . .
I II DISCUSSION
. . . . . .
. . . . .
IV STATE REVIEWS. .
V TABLES. . .
. . . . .
. . . .
5
7
. . . . . . . . . . .
. . . . . . .
. . . . 15
TABLES
1 Classification of United States
Waters in Acres - 1974 . . . . . 17
2 Changes in Acreage of Shellfish
Waters - 1971-1974 . . . . . . . 1.8
3 Change in Percent of Shellfish
Waters - 1971-1974 . . . . . . . 19
4 Acreage and Percent of United States
Coastal Waters - 1974 . . . . . . 20
5 Percent of National Acreage
by State and Region - 1974 . . . 21
6 Percent of Acreage by State
and Region - 1974 . . . . . . . . 22
7 Percent of National Totals
by Regions - 1971-1974 .. . . . 23
8 National Ocean Survey Chart Number
and Date Used in Register. . . . 24
iii
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DEFINITIONS*
Approved
Waters classified by a state shellfish control agency
as approved for the direct market harvesting of shell-
fish. Such waters have been determined to be free of
hazardous concentration of pathogenic microorganisms
and/or industrial wastes by sanitary survey.
Conditionally Approved Conditional areas are areas which meet
approved area criteria but are subject to periodic
closure "due to seasonal population changes, marina
operation, or temporary malfunctioning of a sewage
treatment plant discharging to the areas. The term
seasonal is used by some states to denote such areas.
Restricted Waters controlled for harvesting by state agencies for
specific purposes. Such waters may be harvested for
controlled purification or relaying. The bacterial level
normally used for this classification does not exceed a
median coliform MPN of 700/100 ml.
Prohibited Waters closed for the harvesting of shellfish due to
hazardous levels of contamination. The terms closed,
restricted, and condemned are in use by some states for
this classification. A state control agency may, because
of a variety of reasons, classify an area prohibited even
though the waters may be safe for shellfish production;
for example, areas in or near shipping lanes and thus
subject to fresh fecal contamination, oil, etc.
/
Estuarine
Saline and brackish waters from the 0gen ocean to the
junction of fresh water, normally at 5 /00 salinity.
The area where the ocean and fresh water mlx.
Internal
Waters Waters defined as wholly belonging to an in-
dividual state, but not including the Territorial Sea
(0-3 mile limit or other limits as may be considered by
some states).
Non-Shellfish/Non-Productive Areas This classification includes
those areas which are inaccessible, or do not produce
shellfish in commercial quantities and areas which
contain no shellfish but could support commercial species
either by natural or aquacul~ural means.
*
Definitions from Sanitation of Shellfish Growing Areas, National
Shellfish Sanitation Program, Manual of Operations, Part I, DHEW, PHS
No. 33, 1965 (revision).
iv
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1.
I NTRODUCTI ON
This Register is the third publication of statistical data on
shellfish-growing areas in the Continental United States. It summarizes
changes in these areas that have occurred from 1971 to 1974. This
publication updates the 1971 Registerl which summarized changes dating
back to 1966 when the initial Register, National Register of Shellfish
Production Areas, was pub 1 i shed. 2 Un 1 ike the 1971 and present Regi s ter,
the 1966 document involved only classified shellfish production areas,
excluding the remaining internal estuarine waters of the United States.
Since shellfish production areas can fluctuate by addition or sub-
traction of Non-Productive/Non-She11fish areas, it was necessary to have
a common baseline; therefore, beginning with the 1971 Register all
estuarine waters of the conterminous United States were identified. The
purposes of the 1974 Register are similar to those of the 1971 Register:
1.
2.
3.
To update the 1971 Register data
To provide methodology for future studies
To provide the states with water quality classifications
summaries to assist them in their pollution abatement and
conservation programs.
Statistical data in this Register were derived from the replotting
of acreages on National Ocean Survey (formerly United States Coast and
Geodetic Survey) nautical charts, which reflected changes made in the
classified areas since 1971. Chart changes were generally made by
1 1971 National Shellfish Register of Classified Estuarine Waters3 DHEW
Publication No. (FDA) 74-2013.
2 Leroy S. Houser and Frank J. Silva3 National Register of Shellfish
Production Areas3 DHEW3 PHS Publication No. 15003 1966.
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2
Environmental Protection Agency (EPA) personnel in the Region offices
using FDA Regional Shellfish Consultant files of states involved in the
National Shellfish Sanitation P'rogram.3 These updated nautical charts
were then sent to the EPA National Enforcement Investigations Center in
Denver where the plotted areal changes were measured.
Terminology varies from state to state on the various classifi-
cations of water quality.. This study has used the terms listed in the
National Shellfish Sanitation Program (NSSP) Manual of Operations~
Part I4 (see Definitions on p. iv). Using the standard terms of the
Manual permits a comparative overview of the entire United States.
The differences between estuarine and open ocean or fresh ~ater are
vague and fluctuate from tide to tide. It is generally accepted that
estuarine implies an are~ where fresh and salt water mix. This zone may
extend into the ocean for several miles at the mouths of large rivers
like the Mississippi. Therefore, in the Register, the internal waters
of a state were used as the outer boundary for estuarine water classifi-
cation. I~as realized that some discrepancies would occur, such as in
Maine~and California, where true ocean waters would be included in the
study because they are part of the state. Similarly, estuarine areas
off the Atlantic and Gulf Coasts, where fresh waters mix into the off-
shore zone, were not included in the study. The interior boundary where
a river or stream meets with sea water is also an undefined area, chang-
ing with the tide, season, and precipitation. Best judgment was used as
a cutoff; and where records were readily available, the 5 0/00 salinity
level was used for the interior boundary.
3 Administrated by the Food and Drug Administration (FDA)~ Shellfish
Sanitation Branch.
4 Sanitation of Shellfish Gr~ing Areas~ National Shellfish Sanitation
Program~ Manual of Operations~ Part I~ DHEW~ PHS Publication No. 33~
1965 (revision).
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3
II.
SUMMARY
Since 1971, the total number of classified acres of estuarine water
- - -
for both Shellfish and Non-Productive/Non-Shellfish areas have remained
essentially unchanged; only 700 acres have been added in response to
minor enlargements of boundaries of the classified waters in several
states. The percentage of total classified waters that are considered
shellfish waters has increased from 68.7% in 1971 to 71.3% in 1974.
This corresponds to reclassification of nearly 700,000 acres from Non-
Productive/Non-Shellfish to Productive waters in Louisiana. For classi-
fied Shellfish waters, the period 1971-1974 experienced an increase in
Approved waters of over 123,000 acres, and the number of Prohibited
acres increased nearly 500,000 acres. The Conditional category for
Shellfish waters was depleted by over 74,000 acres during the four-year
period; almost all of this loss occurred in Maryland. Of the six states
not employing the concept of Conditionally Approved waters in 1971, only
California and Oregon have subsequently adopted this category.
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5
III.
DISCUSSION
For the first time since the concept of a National Register of
Estuarine Waters, this study allows statistical comparisons to be made
resulting from measurements of classified estuarine ar~as. The 1974
statistics presented in the accompanying tables are current, as practi-
cality permitted, as of December 31, 1974. Designation of water classifi-
cations and their boundaries were determined, as they were previously,
by the coastal states' shellfish control agencies. Total acreages for
some states differ when comparing the 1971 and 1974 Register data.
Differences reflected in the 1974 Register resulted from remeasuring
classified waters and adding new areas since 1971..
The criteria used to classify these estuarine areas are based
mainly on the bacterial levels of the waterJi overlying the shellfish
- -
beds. However, in addition to bacteriological standards, the New England
--
and North Pacific states have routinely monitored and closed shellfish
growing waters periodically due to the presence of paralytic shellfish
poison (PSP) related to a species of dinoflagellate known as GonyauZax.
In the eastern Gulf region, closures have also occurred periodically as
a result of Red Tides caused by a bloom of Gymnodinium breve.
Although biological causes have been the main reason for restricting
the harvesting of shellfish, an oil spill in Buzzards Bay, Massachusetts
in 1973 caused a prolonged closure of shellfish beds along the southwest
shore of Cape Cod.
At this time no known closures have resulted from the presence of
excessive quantities of heavy metals or radionuc1ides.
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6
It is anticipated that during the next several years there will be
some minor changes in classified acreages since some states have adopted
the fecal coliform criteria for approv~d shellfish growing areas.
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7
IV.
STATE REVIEWS
With few exceptions, the various classifications of the National
Shellfish Sanitation Program assigned to the estuarine areas within
coastal states have not changed substantially from 1971-1974. However,
even minor changes in classification are worth noting. These changes
are discussed in the following coastal state reviews presented in clock-
wise order (discussions are based mainly on data presented in Table 3).
Maine
This state ranks eighth in total acreage with 100% of its
estuarine waters classified. The percentage of state
classified waters designated as Prohibited increased from
8.5% in 1971 to 9.7% in 1974, which continues the in-
crease noted from 1966-1971 (5.9 to 8.5%). Approved
waters, constituting 90.2% of classified waters in 1971,
decreased by 1.2% during the following four-year period
to 89.0%.
Ne~ Hampshire
The state does not commercially harvest shellfish, but it
actively participates in other facets of the NSSP. The
state does not classify the estuarine waters; all areas
are open for recreational harvesting. Only state residents
can obtain permission to harvest for personal con-
sumption. The state ranks 21st in estuarine acreage.
Massachusetts
This state's estuarine waters are 100% classified. Of
these, 43% contain harvestab1e shellfish [Table 2].
During the 1971-1974 period, the Prohibited areas of the
state decreased from 4.1 to 3.6% of the total classified
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8
area. The amount of Restricted area acreage is confined
to the intertidal zone where shellfish are harvested for
controlled purification at a State-operated plant. Only
a 0.4% increase in percentage of Approved area acreage
occurred from 1971-1974.
Rhode Island
The estuarine waters of this state are 100%. classified.
Only small changes occurred in the designated categories
for these waters since 1971: Open areas decreased from
76.9 to 75.6%; Prohibited areas increased from 14.6 to
15.9%; and Conditional areas decreased from 8.6 to 8.5% of
the total classified waters.
connecticut
This state has 100% of its estuarine waters classified,
81.4% of which are shellfish harvesting waters [Table 2J.
A decrease of 5.8% in the ~ercentage of Approved area
o~cur~ed~uringthefour-year'~eriod,'while a 5.7%
increase was noted in the percentage of closed areas.
Ne1;) York
The changes in areas of New
so slight that they are not
changes of Table 3.
York's classified waters were
observed in the percentage
Ne1;) Jersey
The state continued to lose Approved acres during the
last four years. The decrease in percentage of Approved
acreage of 2.8% was, however, less than the 9.7% decrease
observed from 1966-1971. These acres were reassigned to
the remaining three shellfish growing water categories:
Prohibited waters increased bY 1.2%; Conditional waters
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increased by 0.5%; and Restricted waters increased by
1.0% of the total classified w~ters in New Jersey during
the 1971-1974 period.
. ~nSYlVani~
--Similar to New.Hampshire, Pennsylvania does not commercially
harvest shellfish, but it does participate in the other
aspects of the NSSP. The state has less than 6,000 acres
of estuarine water, which is in the lower Delaware River.
All the waters are considered Prohibited and in the Non-
Shellfish/Non-Productive category. The state ranks last
in estuarine acreage.
c:P8Zaw~ No change in acreages assigned to the various categories
occurred during the four-year period.
. ~yZaniD' Estuarine or tidal waters within Maryland not containing
commercial shellfish or with low salinities that would
not support the setting or growth of shellfish are
designated as unclassified. The unclassified figure of
203,641 acres appears in the Other column of the Non-
Productive/Non-Shellfish category in Table 1. Maryland
also contains two areas closed for conservation. One
area (727 acres) is in the lower Corsica River and the
other (2,005 acres) is in the lower Chester River.
During the 1971-1974 period, the Approved acreage de-
creased by 1.5%.
C:--Virgi~ During the last four years there has been an. approximate
~.4% decrease in the percentage of ~pproved shellfish
growing waters in Virginia~ This reflects a correspond-
ingly equal amount in the percentage increase in the
Closed Shellfish waters. Virginia's estuarine waters are
presently considered to be 100% classified.
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North Carolina
From 1971 to 1974, the percentage of Open waters de-
creased 4.0%. The area was assigned tri th~ Prohibited
category. Most of the downgrading occurred in the Neuse
River and Pam1ico River estuaries; a combined number of
over 80,000 acres were reassigned to the Prohibited
category.
South Carolina
Only slight changes in assigned acreages were made during
the 1971-1974 period in South Carolina. Percentage of
Approved waters increased by 0.3%; percentage of Con-
ditional waters increased by 0.4%; and percentage of
Prohibited waters declined by 0.7%.
Georgia
During the last four years, the largest percentage of
changes in classified waters in the U.S. occurred in
Georgia. A total of 74,034 acres were removed from the
Approved category, representing a decline of 36.3%, and
placed in the Prohibited category, producing a comparable
percentage increase in this classified area.
Florida
Changes in assigned acreages in Florida waters were so
slight that they are not reflected in the percentage
changes of Table 3. Florida remains the state with the
largest number of Prohibited acres of water (more than
one million), although California and Georgia rank
higher than Florida on the basis of percentage of total
classified waters.
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Alabama
11
Areas assigned to the various NSSP categories in Alabama
changed little from 1971-1974. The largest Conditionally
Approved area in the U.S. is here -- over 187,000 acres --
involving a large percentage of Mobile Bay. Offshore in
Mississippi Sound the state has not made surveys and,
therefore, it classifies the area Prohibited, although
most of these waters are probably of excellent quality.
Mississippi .
Approved acreage in this state has not changed during the
last four years. Prohibited acreage has decreased from
8.3% to 7.1% of the total classified water. Mississippi
has taken the option, similar to Alabama, to show the
Mississippi Sound area as Prohibited because they have
not surveyed it. As in Alabama's review, most of these
waters are probably of excellent quality.
Louisiana
Texas
Since 1971 the state increased its Approved acreage from
45.0 to 56.7% and its Prohibited acreage from 5.6 to
13.2% of the total classified waters. Most of these
increases were attributed to the reclassification of
Approved, Non-Shellfish waters amounting to nearly
700,000 acres.
From 1971-1974, Approved areas increased from 50.3% to
50.4%; Conditional areas comprising 0.7% of the classified
waters in 1971 were completely eliminated by 1974; Closed
areas increased from 16.9% to 17.5% during the same four-
year period.
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California
Like the other two Pacific Coast states, only a small
percentage of estuarine waters'is classified as Approved
shellfish waters. Since 1971 this percentage has de-
creased from 2.8 to 2.1%; the change occurred in Humboldt
Bay where 3,609 Approved shellfish acres were changed to
Conditionally Approved. In addition, the small decrease
in percentage of Prohibited shellfish waters (0.3%) for
this state occurred in Humboldt Bay.
Oregon'
This state had the third smallest estuarine acreage in
the NSS with most of its area classified as Non-Productive.
Approved waters of the state decreased from 12,323 acres
(14.7%) in 1971 to 7,075 acres (8.5%) in 1974. The
classifyin~ of Yaquina and Tillamook Bays as Conditionally
Approved added 7,693 acres to this category. These acres
were derived from formerly Approved and Closed shellfish
growing waters.
Washington
During 1971-1974, Approved acreage decreased from 8.7 to
7.6%, mainly due to a reassignment of 20,620 acres to
the Conditionally Approved category in Grays Harbor.
Prohibited acreage increased slightly and therefore is
not reflected in the percentages contained in Table 3.
The Nation
The Nation increased Approved acreage from 1971-1974 by
123,121 acres. Most of this increase was from the
reclassification of Non-Productive/Non-Shellfish waters.
Since 1971, California and Oregon have adopted the
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Conditional
while North
continue to
concept for classifying shellfish waters,
Carolina, Mississippi, Georgia, and Louisiana,
exclude this category.
Prohibited areas have increased during the last four
years from 16.1% of shellfish waters to 18.5%. This
represents a more gradual annual percentage increase,
0.6% per year, than was observed for the previous five-
year period, 1.3% per year.
,
,
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Conditional concept for classifying shellfish waters,
while North Carolina, Mississippi, Georgia, and Louisiana,
continue to exclude this category.
Prohibited areas have increased during the last four
years from 16.1% of shellfish waters to 18.5%. This
represents a more gradual annual percentage increase,
0.6% per year, than was observed for the previous five-
year period, 1.3% per year.
i .
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v.
TABLES
Table 1 lists the number of acres assigned to all the classified
waters of each state and region according to the system designed for the
National Shellfish Sanitation Program. Comparison of 1971 and 1974
Register data reveals differences in the total acreages for about half
the states listed (10 of 22). These differences resulted from the
remeasurement of classified waters and the addition of newly classified
areas since 1971. The national total acreage of all classified waters
derived from remeasurement of 1971 data was 3,816 acres greater than
the previous measurement. Since 1971,700 acres, excluded in the former
publication, have been added to the nation's waters. There have been no
changes in the ranking of states by percentage of the nation's available
Shellfish waters since 1971.
Tables 2 and 3 are concerned with waters classified for Shellfish
harvesting. Table 2 lists the number of acres assigned to each Shellfish
category for both the 1971 remeasured areas and the 1974 measured areas
by state and region. Table 3 lists the corresponding percentages these
areas represent of all classified waters for each state and region.
Major changes that have occurred in the interim four years are:
l.
.
The addition of nearly 700,000 acres of Shellfish waters from
Non-Productive/Non-Shellfish classified waters, which occurred
in Louisiana. The addition accounted for Louisiana's having
the largest increases in both Approved and Prohibited Shellfish
acreages.
2.
The deletion of 74,034 acres of Approved Shellfish waters by
Georgia, which was the largest single change noted in the
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percentage of state classified waters. The addition of these
acres to the Prohibited Shellfish category produced the
largest p~rcentage increase in state Prohibited Shellfish
waters.
3.
The deletion of 84,885 acres of Approved Shellfish waters by
the state of North Carolina, the largest decrease in Approved
acreage observed.
4.
The deletion of 101,499 acres from the Conditionally Approved
category by the state of Maryland. This represents the
largest actual and percentage change in this classified area.
Table 4 presents the information of Table 1 on a coastal basis.
The dividing line for the Atlantic and Gulf coasts was drawn at the
southern tip of Florida.
Tables 5 and 6 show the data of Table 1 for each state and region
by national percentage [Table 5] and regional percentage [Table 6].
Table 7 indicates the changes made in the classified Shellfish
areas of each region based on percentage of the national total, between
1971 and 1974. As observed in the totals column, the U. S. has in-
creased its productive Shellfish area by 2.6% since 1971.
Table fl lists the charts used in delineating the classified areas
of each state. The first chart number listed is that assigned by the
National Ocean Survey, while the chart number in parentheses is the
corresponding number assigned by the former United States Coast and
Geodetic Survey.
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Table 1
NATIONAL SHELLFISH REGISTER
CLASSIFICATION OF U. S. WATERS IN ACRES
1974
REGION STATE WATERS NON-PRODUCTIVE/NON-SHELLFISH TOTALS RANK
OPEN CONDITIONAL RESTRICTED CLOSED OPEN CLOSED OTHER
ME 930,325 6,531 6,728 101,281 1,044,865 8
NH 10,603 10,603 21
'\. MA 310,881 335 4,091 29,060 437,184 18,874 800,425 10
RI 96,019 10,836 20,134 126,989 19
CT 248,751 2,227 68,956 71 ,265 1,961 393,160 13
TOTAL 1,585,976 19,929 10,819 219,431 519,052 20,835 2,376,042
II NY 477 ,241 266 151,096 369,205 22,838 1,020,646 9
NJ 244,695 7,544 23,370 119,581 395,190 12
TOTAL 721 ,936 7,810 23,370 270,677 369,205 22,838 1,415,836
III PA 5,796 5,796 22
DE 205,153 153 28,251 40,540 274,097 17
MD 1,213,576 1ll ,319 2,732* 203,641** 1 ,531 ,268 6
VA 1,315,209 724 120,271 821 66,838 1,503,863 7
TOTAL 2,733,938 877 259,841 821 115,906 203,641 3,315,024
IV NC 1,379,563 604,038 134,110 2,117,711 3
SC 199,323 1,344 74,917 275,584 16
GA 49,494 154,473 203,967 18
FL 663,126 84,099 1,024,966 447,311 47,597 2,267,099 2
AL 81 ,937 187,513 85,589 2,468 17,452 374,959 15
MS 76,232 27,678 1,469 267,030 17,845 390,254 14
TOTAL 2,449,675 272 ,956 1,971,661 451,248 466,189 17,845*** 5,629,574
VI LA 2 ,000,117 464,161 682,129 380,283 3,526,690 1
TX 822,447 285,168 518,986 4,136 1,630,737 5
TOTAL 2,822,564 749,329 1,201,115 384,419 5,157,427
IX& CA 11,178 4,718 263,045 34,132 59,592 153,068**** 525,733 11
X OR 7,075 7,693 13,305 50,376 5,232 83,681 20
WA 155,655 21,313 42,382 1,809,267 7,502 2 ,036,119 4
TOTAL 173,908 33,724 318,732 1,893,775 72,326 153,068 2,645,533
GRAND TOTALS 10,487,997 335,296 34,189 3,789,671 4,435,216 1,082,513 374,554 20,539,436
* 2,732 acres Conservation Area, Ctosed Non-Shellfish
** 203,641 acres Unclassified, Non-Shellfish --'
*** 17,845 acres Conditional, Non-Shellfish '"
**** 19,381 acres Conditional, Non-Shellfish; 133,687 acres Ocean
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ME
MA
RI
CT
TOTAL
NY
NJ
TOTAL
DE
MD
VA
TOTAL
NC
SC
GE
FL
~~
TOTAL
LA
TX
TOTAL
CA
OR
WA
TOTAL
GRAND
TOTAL
STATE
OPEN
-19-i,--ThT-
942,501
307,234
97,551
271,509
1,618,795
477 ,279
255,611
732,890
205,153
1,236,735
1,352,505
2,794,393
1,464,448
198,237
123,528
663,834
~~:B~
2,608,216
1 ,586,166
820,043
2,406,209
14,787
12,323
177 ,263
204,373
10,364,876
930,325
310,881
96,019
248,751
1,585,976
477 ,241
244,695
721,936
205,153
1,213,576
1,315,209
2,733,938
1,379,563
199,323
49,494
663,126
~~:~~~
2,449,675
2,000,117
822,447
2,822,564
11,178
7,075
155,655
173,908
10,487,997
Table 2
NATIONAL SHELLFISH REGISTER
CHANGES IN ACREAGE OF SHELLFISH WATERS
1971-1974
CONDITIONAL
i971 1974
6,723
220
10,846
1,796
19,585
266
5,354
5,620
153
101,499
724
.102,376
347
83,334
186,903
270,584
11,251
11 ,251
409,640
6,531
335
10,836
2,227
19,929
266
7,544
7,810
1,344
84,099
187,513
272,956
224
224
4,718
7,693
21,313
33,724
1971
88,913
32,658
18,464
46,557
186,592
151,058.
114,814
265,872
153
724
28,251
119,212
82,975
230,438
CLOSED
1974
101,281
29,060
20,134
68,956
219,431
151,096
119,581
270,677
28,251
111 ,319
120,271
259,841
604,038
74,917
154,473
1,024,966
85,589
27...678
1,971,661
464,161
285,168
749,329
263,045
, 13,305
42,382
318,732
3,789,671
RESTRICTED
T971------i974-.
6,278
4,255
10,983
19,370
.19,370
30,353
6,728
4,091
10,819
23,370
23,370
34,189
TOTAL
191'1--'---1974--
1,044,865
344,367
126,861
319,862
1,835,955
628,603
395,149
1,023,752
233,557
1,457,446
1,436,204
3,127,207
1,983,601
275,319
203,967
1,772,191
T5~:95~
4,698,820
1,784,978
1,106,947
2,891,925
278,941
28,089
219,350
526,380
14,104,039
-"
00
% SURVEYED FOR
SHELLFI SH
1 !lil'--r97"4
1,044,865 ' 100.0
344,367 43.0
126,989 100.0
319,934 81.4
1 ,836,155
628,603
395,190
1,023,793
233,557
1,324,895
1,436,204
2,994,656
1,983,601
275,584
203,967
1,772,191
355,039
103,910
4,694,292
2,464,278
1,107,615
3,571,893
278,941
28,073
219,350
526,364
14.,647,153
77.3
61.6
100.0
72.3
85.2
95.2
95.5
94.3
93.7
100.0
100.0
78.2
94.7
27.9
83.5
50.6
67.9
56. 1
53.1
33.6
10.8
19.9
68.7
100.0
43.0
100.0
81.4
77.3
61.6
100.0
72.3
85.2
86.5
95.5
90.3
93.7
100.0
100.0
78.2
94.7
26.6
83.4
69.9
67.9
69.3
53.1
33.5
10.8
19.9
71.3
" 335,296
877
519,153
76,735
80,439
1,025,023
86,199
32,471
1,820,020
198,812
275,653
474,465
264,154
15,766
41,863
321,783
3,299,170
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Table J
NATIONAL SHELLFISH REGISTER
CHANGE IN PERCENT OF SHELLFISH WATERS
1971-1974
AREA OPEN CONDITIONAL RESTRICTED CLOSED
1971 19:'4 1971 1974 1971 1974 1971 1974
ME 90.2 89.0 0.6 0.6 0.7 I 0.7 8.5 9.7
MA 38.4 38.8 0.1 0.1 0.5 0.5 4.1 3.6
RI 76.9 75.6 8.6 8.5 14.6 15.9
CT 69.1 63.3 0.5 0.6 11.8 17.5
Region I 68.1 66.7 0.8 0.8 0.5 0.5 7.9 9.2
NY 46.8 46.8 T* T 14.8 14.8
NJ 64.7 61.9 1.4 1.9 4.9 5.9 29.1 30.3
Region II 51.8 51.0 0.4 0.6 1.4 1.7 18.~ 19.1
DE 74.8 74.8 0.1 0.1 10.3 10.3
MD 80.8 79.3 6.6 0.0 7.8 7.3
VA 89.9 87.5 T T 5.5 8.0
Region III 84.3 . 82.5 3.1 T 7.0 7.8
NC 69.1 65.1 24.5 28.5
SC 72.0 72.3 0.1 0.5 27.9 27.2
GE 60.6 24.3 39.4 75.7
FL 29.3 29.2 3.7 3.7 45.2 45.2
AL 21.9 21.9 49.8 50.0 23.0 22.8
MS 19.5 19.5 8.3 7.1
Region IV 46.3 43.5 4.8 4.8 32.3 35.0
LA 45.0 56.7 5.6 13.2
TX 50.3 50.4 0.7 0.0 16.9 17.5
Region VI 46.7 54.7 0.2 0.0 9.2 14.5
CA 2.8 2.1 0.0 0.9 50.3 50.0
OR 14.7 8.5 0.0 9.2 18.8 15.9
WA 8.7 7.6 T 1.0 2.1 2.1
Region IX & X 7.7 6.6 T 1.3 12.2 12.0
TOTAL UNITED STATES
50.5 51.1 2.0 1.6 0.1 0.2 16.1 18.5
* Troaae
--'
~
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N
a
Table 4 I
NATIONAL SHELLFISH REGISTER
ACREAGE AND PERCENT OF U. S. COASTAL WATERS
1974
AREA I~ATERS NON-SHELLFISH/NON-PRODUCTIVE
OPEN CONDITIONAL RESTRICTED CLOSED OPEN CLOSED OTHER TOTALS
ATLANTIC COAST
ACREAGE 6,724,516 40,874 34,189 1,998,505 1,011,549 306,133 203,641* 10,319,407
% of Classification 64.1 12.2 100.0 52.7 22.8 28.3 54.4
% of Coastal Water 65.2 0.4 0.3 19.4 9.8 3.0 2.0
% of Nation 32.7 0.2 0.2 9.7 4.9 1.5 1.0 50.2
PAC I FI C COAST
ACREAGE 173,908 33,724 318,732 1 ,893,775 72,326 153,068** 2,645,553
% of Classification 1.7 10.1 8.4 42.7 6.7 40.9
% of Coastal Water 6.6 1.3 12.0 71.6 2.7 5.8
% of Nation 0.8 0.2 1.6 9.2 0.4 0.7 12.9
GULF COAST.
ACREAGE 3,589,573 260,698 1,472,434 1,529,892 704,054 17,845*** 7,574,496
% of Classification 34.2 77.8 38.9 34.5 65.0 4.8
% of Coast Water 47.4 3.4 19.4 20.2 9.3 0.2
% of Nation 17.5 1.3 7.2 7.4 3.4 0.1 36.9
UNITED STATES TOTAL 10,487,997 335,296 34,189 3,789,671 4,435,216 1,082,513 374,554 20,539,436
* 203,641 acres Unclassified
** 19,381 acres Conditional, 133,687 acres Ocean
*** 17,845 acres Conditional
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Table 5
NATIONAL SHELLFISH REGISTER
PERCENT OF NATIONAL ACREAGE BY STATE AND REGION
1974
AREA 14ATERS . NON-SHELLFISH/NON-PRODUCTIVE
OPEN CONDITIONAL RESTRICTED CLOSED OPEN CLOSED OTHER TOTALS
ME 4.5 T * T 0.5 5.1
NH 0.1 0.1
MA 1.5 T T 0.1 2.1 0.1 3'.9
RI 0.5 T 0.1 0.6
CT 1.2 T 0.4 0.3 T 1.9
Region I 7.7 0.1 T 1.1 2.5 0.1 11.6
NY 2.3 T 0.7 1.8 0.1 5.0
NJ 1.2 T 0.1 0.6 1.9
Region II 3.5 T 0.1 1.3 1.8 0.1 6.9
PA T T
DE 1.0 T 0.1 0.2 1.3
MD 5.9 0.5 T 1.0** 1.5
VA 6.4 T 0.6 T 0.3 7.3
Region UI' 13.3 T 1.3 T 0.6 1.0 16.2
NC 6.7 2.9 0.7 10.3
SC 1.0 T 0.4 1.4
GE 0.2 0.8 1.0
FL 3.2 0.4 5.0 2.2 0.2 11.0
AL 0.4 0.9 0.4 T 0.1 1.8
MS 0.4 0.1 T 1.3 0.1*** 1.9
Region IV 11.9 1.3 9.6 ' 2.2 2.3 0.1 27.4
LA 9.7 2.3 3.3 1.9 17.2
TX 4.0 1.4 2.5 T 7.9
Region .VI 13.7 3.7 5.8 1.9 26.1
CA T T 1.3 0.2 0.3 0.7**** 2.6
OR T T 0.1 0.2 T 0.4
WA 0.8 0.1 0.2 8.8 T 9.9
Regions IX & X 0.8 0.2 1.6 9.2 0.4 0.7 12.9
* Trace
** Includes Unclassified area
*** Includes Conditional area
**** Includes Conditional and Ocean areas
N
-'
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N
N
Table 6
NATIONAL SHELLFISH REGISTER
PERCENT OF ACREAGE BY STATE AND REGION
1974
AREA WATERS NON-SHELLFISH/NON-PRODUCTIVE
OPEN CONDITIONAL RESTRICTED CLOSED OPEN CLOSED OTHER TOTALS
ME 89.0 0.6 0.7 9.7 100
NH 100.0 100
MA 38.8 0.1 0.5 3.6 54.6 2.4 100
RI 75.6 8.5 15.9 100
CT 63.3 0.6 17.5 18.1 0.5 100
Region I 66.7 0.8 0.5 9.2 21.9 0.9 , 100
NY 46.8 1* 14.8 36.2 . 2.2 100
NJ 61.9 1.9 5.9 30.3 100
Region II 51.0 0.6 1.6 19.1 26.1 1.6 100
PA 100.0 100
DE 74.8 0.1 10.3 14.8 100
MD 79.3 7.3 0.2 13.3 100
VA 87.5 T 8.0 0.1 4.4 100
Regi on II I 82.5 T 7.8 T 3.5 6.1 100
NC 65.2 28.5 6.3 100
SC 72.3 0.5 27.2 100
GE 24.3 75.7 100
FL 29.3 3.7 45.2 19.7 2.1 100
AL 21.9 50:0 22.8 0.7 4.6 lOO
MS 19.5 7.1 0.4 68.4 4.6 100
Region ,IV 43.5 4.9 35.0 8.0 8.3 0.3 100
LA 56.7 13.2 19.3 10.8 100
TX 50.4 17.5 31.8 0.3 100
Region VI 54.7 14.5 23.3 23.3 100
CA 2.1 0.9 50.0 6.5 11.4 29.1 100
OR 8.5 9.2 15.9 60.2 6.2 100
WA 7.6 1.0 2.1 88.9 0.4 100
Regions IX & X 6.6 1.3 12.0 71.6 2.7 5.8 100
UNITED STATES TOTAL 51.1 1.6 0.2 18.5 21.6 5.2 1.8 100
* Trace
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23
Table 7
NATIONAL SHELLFISH REGISTER
SHELLFISH WATERS
PERCENT OF NATIONAL TOTAL BY REGIONS
1971-1974
REGION YEAR OPEN CONDITIONAL RESTRICTED CLOSED TOTAL
1971 7.9 0.1 T* 0.9 8.9
1974 7.7 0.1 T 1.1 9.0
II 1971 3.6 T 0.1 1.3 5.0
1974 3.5 T 0.1 1.3 5.0
III 1971 13.6 0.5 1.1 15.2
1974 13.3 T 1.3 14.6
IV 1971 12.7 1.3 8.9 22.9
1974 1-1.9 1.3 9.6 22.8
VI 1971 11.7 0.1 2.3 14.1
1974 13.7 0.0 3.7 17.4
IX & X 1971 1.0 T 1.6 2.6
1974 0.8 0.2 1.6 2.6
UNITED 1971 50~5 2.0 0.1 -16.1 68.7
STATES 1974 51.1 1.6 0.2 18.5 71.4
* Trace
-- - -
--
- .----
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N
Tab le 8 ~
NATIONAL SHELLFISH REGISTER
NATIONAL OCEAN SURVEY (U. S. C. & G. S.) CHART NUMBER AND DATE
CHART DATE CHART DATE CHART DATE CHART DATE CHART DATE
REGION I 13228(237) Jan 73 12371(218) Sep 72 REGION III 12285(101SC) Dee 73
MAINE 13221 (353) May 74 12370(219) Feb 73 PENNSYLVANIA 12237(605SC) Nov 73
13328(801) Apr 74 13246(1208) Dee 73 12363 (1213) Jan 74 12312(295) Ju1 74 12245 (400) Aug 74
13327 (303) Mar 73 13249(580) Ma r 74 12369(220) Nov 73 12253 (452) Jun 74
13326 (304) Oet 70 13248(270) Oe t 71 12368 (221) Dee 72 DELAWARE 12247 (492) Apr 73
13324(305)' N ov 71 13250 (581) Sep 71 12367 (222) Nov 72 12304(1218) Nov 73 12238(494) Oet 70
1331S (306) Sep 74 13251(339) Oe t 73 12214(1219) May 74 12243(495/496)Jul 73
I
13316(307) Aug 73 13239(259) Mar 73 REGION II 12311(294) Nov 73 12248(529) Feb 74
13313(308) Aug 73 13230(249) ~ov 74 NEW YORK 12312 (295) Ju1 74 12251(530/531)Mar 74
13305 (310) Feb 74 13234 (260) Nov 73 13205 (1211) Dee 73 12216(411) Oet 74 12235 (534) Nov 73
13309(311) Feb 74 13235 (348) Mar 73 12354(1212) Mar 74 12277 (570) Ju1 74 12233 (557) Nov 73
13301 (313) May 71 13237(1209) Dee 73 12358(363) Aug 74 12211 (1220) Jun 74
13293(314) ~pr 74 13243 (258) May 72 12353 (1214) Aug 74 MARYLAND ,12210(1221) Aug 74
13290(315) Mar 74 13 241 (265) Sep 73 12352(120SC) Dee 73 12211(1220) Jun 74 12221.(1222) Ju1 74
13286(1205) Jun 73 13233 (264) Oe t 72 12362(361) Ju1 73 12230 (1224) Aug 74 12225 (1223) Jun 74
13287(231) Aug 72 12326(1215) Oet 74 12261(554) Mar 74 12230(1224) Aug 74
13283 (211) Dee 73 RHODE ISLAND 12365(224)- Oet 74 12231 (555) Mar 74 12207(1227) Mar 74
13285 (212) Aug 73 13221 (353) May 74 12363 (1213) . Jan 74 12228(568) Aug 74 12205(129SC) Feb 74
13219(268) Feb 72 12343 (282) N ov 71 12233 (557) Nov 73 12206(829SC) Feb 74
NEW HAMPSHIRE 13205 (1211) Dee 73 12327 (369) Ju1 74 12264(553) Mar 74
13283 (2t1) Dee 73 13 214 (358) Oet 74 12285 (101SC) Dee 73 REG ION IV
13285 (212) Aug 73 13217(269) Jun 73 NEW JERSEY 12266(551) Nov 73 NORTH CAROLINA
13278(1206) Nov 74 ' 13218(1210) Ju1 74 12343 (282) N ov 71 12271(550SC) Dee 73 ' 12207 (1227) Mar 74
12341(746) Oet 73 12268(552) Mar 71 12204(1229) Ma r 74
MASSACHUSETTS CONNECTICUT 12327(369) Ju1 74 12273 (1226) Aug 74 11548 (1231) Mar 74
13267 (1207) Nov 73 13214(358) Oet 74 12332(375) Nov 72 12272(548) Dee 73 11555 (1232) Aug 74
13279(243) Sep 74 13212(359) Aug 72 12324(824SC) Mar 74 12278(549) May 74 11544(1233) Mar 74
13282(213) Nov 73 12354(1212) Ma r 74, 12316(826SC) Jan 74, 12282(566) Mar 74 11543 (1234) Mar 74
13275 (240) May 74 13211(214) Nov 71 12304(1218) Nov 73 12274(572) Dee 73 ' 11539(1235) Mar 73
13270(246) Feb 74 12375 (215) Jun 73 12311 (294) Nov 73 12277 (570) Ju1 74 11536(1236) Apr 72
13269(244) Jan 72 12374(216) May 71 12312 (295) Ju1 74 11535 (1237) Feb 72
13253(245) Dee 72 ' 12373(217) Sep 74 VIRGINIA 12205 (l29SC) Feb 74
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TabZe 8 (continued)
CHART DATE CHART DATE CHART DATE CHART DATE CHART DATE
NORTH CAROLINA(e.ont.) FLORIDA (WEST) 11345 (1051) Apr 74 18647(5599) Apr 73 18400 (6300) Jun 74
11545 (420) Feb 74 11433 (598SC) Sep 73 11371(1268) Mar 7.4 18649(5532) Jan 74 18465(6382) Aug 74
11554 (537) Sep 74 11432(599SC) Sep 73 11369(1269) Dee 73 18645 (5072) Mar 74 18441 (6450) Jan 74
11552 (538) Sep 72 11452 (1250) Jan 74 11363 (1270) Oct 74 18651 (5531) May 74 18448 (6460) Jun 74
11542(777) Aug 74 11442 (1251) Jun 74 11364(1271) Feb 74 18654(5533) Jun 74 18502(6195) Sep 74
12206(829SC) Feb 74 11439(1252) Oe t 73 11361(1272) Aug 74 18656(5534) Mar 74 18504(6185) Mar 74
11553 (831SC) Dee 74 11431(1253) Jan 74 11358(1273) Aug 74 18685 (5403) Apr 74 18480(6102) Oct 74
11429(1254) Feb 74 11357 (1274) Oct 74 18703 (5387) May 74 18500 (6002) May 73
SOUTH CAROLINA 11426(1255) ~ Ju1 74 11356(1275) Dee 73 18754(5108) Feb 71 18521(6151) May 74
11532 (787) May 74 11424(1256) Apr 74 11351(1276) Oct 74 18772(5107) May 74
11517 (793) Aug 74 11412(1257) Nov 73 11349(1277) Jun 74 18686(5476), Ma r 73
11519(794) May 73 11409 (1258) May 74 11344(1278) Sep 74 18725 (5120) Feb 74
11512 (440) Aug 74 11408(1259) Ju1 74 11'341(1279) May 74 18720(5202) Sep 74
11535 (1237) Feb 72 11407 (1260) Jan 73 18700(5302) Mar 74
11531(1238) Jan 74 11405 (1261) Sep 74 TEXAS 18740(5101) Sep 74
11521 (1239) Oe t 73 11401(1262) Mar 74 11341(1279) May, 74 18746(5142) Apr 74
11513(1240 Mar 73 11389(1263) Mar 74 11332 (1280) May 73 18680(5402) Aug 73
11388(1264) Oe t 73 11331 (885SC) Aug 74
GEORGIA 11382(1265) Sep 74 11323 (1282), Apr 74 REG ION X
11512(440) Aug 74 11427 (856SC) Aug 74 11326(152SC) Jun 74 OREGON
11511(573) Apr 73 11425 (85 7SC) Jun 74 11321 (1283) Dee 73 18521(6151) May 74
11510(574) Sep 74 11316(1284) Feb 74 18520 (5902) May 73
11504 (448) Sep 72 ALABAMA 11313 (1285) Aug 74 18556(6122) Dee 73
11509(1241) Mar 74 11382 (1265) Sep 74 11307 (1286) Apr 73 18558(6112) Apr 73
11502 (1242) Aug 74 11376(1266) Nov 73 11308 (893SC) Aug 74 18580(5802) May 73
11373(1267) Oe t 73 11304(1287) Oe t 72 18581(6055) Aug 73
FLORIDA (EAST) 11301(1288) Dee 73 18583 (6023) Oct 72
11502 (1242) Aug 74 MISSISSIPPI .18584(6004) Ju1 74
11488 (1243) Jan 73 11373(1267) Oct 73 REGION IX 18587 (5984) Mar 74
11486(1244) Aug 73 11371(1268) Mar 74 CALIFORNIA 18588 (5971) May 73
11484(1245) May 73 11372 (876SC) Jun 74 18600(5702) Jun 71 18600 (5702) Jun 71
11476(1246) Dee 73 18620 (5602) Jun 73 18601(5951) Mar 73
11474(1247) Apr 72 REGION VI 18622(5832) May 73 18602 (5896) Mar 74
11466 (1248) Aug 74 LOUISIANA 18640 (5502) May 73
11462(1249) Apr 73 11352(1050) Ju1 74 18643 (5603) Mar 73 WASHINGTON N
<.n
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Note
Experience has shown, following the compilation of statistics for
t~o Estuarine Registers, -that collecting the necessary material from
other than the particular coastal state very often results in conflict-
ing opinions regarding area classification and even the location of
boundary lines limiting the extent of areas. Therefore, to alleviate
confusion in the future concerning this type of information, it is
recommended that each state should be consulted to reach mutual agreement
on ~here the areas are located in the estuary and exactly ~hat their
correct classifications are in respect to the National Shellfish Sanitation
Program. .
GPO 833-404
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