HomeMy WebLinkAbout20231365 Ver 2_TRC Beaverdam Creek Rehab Mussel Survey Report_20240216Freshwater Mussel Survey Report
Beaverdam Creek Rehabilitation Project
Johnston County, North Carolina
Beaverdam Creek in Survey Reach
Prepared For:
TRC
Prepared by:
EEfte
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324 Blackwell Street, Suite 1200
Durham, NC 27701
April 10, 2024
Table of Contents
1.0 Introduction.......................................................................................................................... 1
2.0 Target Species Description.................................................................................................. 2
2.1. Atlantic Pigtoe (Fusconaia masoni)................................................................................. 2
2.1.1. Characteristics...........................................................................................................2
2.1.2. Distribution, Habitat Requirements, and Status........................................................ 2
2.1.3. Threats to Species..................................................................................................... 5
2.1.4. Designated Critical Habitat....................................................................................... 6
3.0 Survey Efforts...................................................................................................................... 7
3.1. Stream Conditions at Time of Surveys............................................................................ 7
3.2. Mussel Survey Methodology........................................................................................... 8
4.0 Results: Beaverdam Creek Survey Reach............................................................................ 8
5.0 Discussion/Conclusions....................................................................................................... 8
6.0 Literature Cited.................................................................................................................... 9
Appendix A. Figures:
Figure 1: Project Vicinity & Survey Reach
Figure 2: NCNHP Element Occurrences and Designated Critical Habitat
Appendix B. Select Photographs
1.0 INTRODUCTION
The Beaverdam Creek Rehabilitation Project (the Project) consists of stream restoration
activities in Beaverdam Creek of the Neuse River Basin, near the Town of Princeton, in Johnston
County, North Carolina.
The US Fish and Wildlife Service (USFWS) Information, Planning, and Consultation (IPaQ
system lists the Federally Threatened Atlantic Pigtoe (Fusconaia masoni, AP) and Neuse River
Waterdog (Necturus lewisi, NRWD) and the Federally Endangered Carolina Madtom (Noturus
furiosus, CMT) as protected aquatic species that could potentially be affected by activities in this
location, as accessed in February 2024. Based on the provided information from TRC, the
primarily environmental consultant for the project, and their correspondence with the US Army
Corps of Engineers (USACE), there is potential habitat in the project area, and the USACE is
only requesting surveys for Atlantic Pigtoe.
Presence/absence surveys targeting Atlantic Pigtoe were requested to assess potential effects on
the species resulting from the proposed Project. Based on the provided drawings, the Project will
include approximately 500 meters of sediment excavation and removal (project area) from upper
Beaverdam Creek. In addition to the project area, USACE has requested a 100-meter upstream
and 400-meter downstream buffer be included for a total survey reach of approximately 1,000
meters (Appendix A, Figure 1).
Table 1 lists the nearest element occurrences (EOs) for Atlantic Pigtoe to the Project in
approximate stream miles (SM). Data is according to the NC Natural Heritage Program database
(NCNHP 2024) most recently updated in January 2024. Measurements are taken from the
downstream -most portion of the surveyed reach (Appendix A, Figure 2).
Table 1—Element Occurrences
Distance from
First
Last
EO
Target Species
EO ID
EO Waterbody
Site (SM)
Observed
Observed
Status*
Atlantic Pigtoe
15611
Neuse River
35.02
July 1985
July 1985
H
Atlantic Pigtoe
31093
Little River
40.42
July 1983
July 1983
H
March
Atlantic Pigtoe
11695
Swift Creek
48.45
July 2022
C
1991
*: C — NCNHP Current; H NCNHP Historic
As part of the permitting process that requires an evaluation of potential project -related effects to
federally protected species, Three Oaks Engineering (Three Oaks) was contracted by TRC to
conduct surveys targeting Atlantic Pigtoe.
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2.0 TARGET SPECIES DESCRIPTION
2.1. Atlantic Pigtoe (Fusconaia masoni)
2.1.1. Characteristics
The Atlantic Pigtoe was described by Conrad (1834) from the
Savannah River in Augusta, Georgia. Although larger
specimens exist, the Atlantic Pigtoe seldom exceeds 50 mm
(2 inches) in length. This species is tall relative to its length,
except in headwater stream reaches where specimens may be
elongated. The hinge ligament is relatively short and
prominent. The periostracum is normally brownish, has a
parchment texture, and young individuals may have greenish
rays across the entire shell surface. The posterior ridge is
biangulate. The interdentum in the left valve is broad and flat.
The anterior half of the valve is thickened compared with the
posterior half, and, when fresh, nacre in the anterior half of the shell tends to be salmon colored,
while nacre in the posterior half tends to be more iridescent. The shell has full dentation. In
addition to simple papillae, branched and arborescent papillae are often seen on the incurrent
aperture. In females, salmon colored demibranchs are often seen during the spawning season.
When fully gravid, females use all four demibranchs to brood glochidia (VDGIF 2014).
The Atlantic Pigtoe is a tachytictic (short-term) breeder, brooding young in early spring and
releasing glochidia in early summer. The Bluegill (Lepomis macrochirus) and Shield Darter
(Percina peliata) have been identified as potential fish hosts for this species (O'Dee and Waters
2000). Additional research has found Rosefin Shiner (Lythrurus ardens), Creek Chub (Semotilus
atromaculatus), and Longnose Dace (Rhinichthys cataractae) are also suitable hosts (Wolf
2012). Eads and Levine (2012) found White Shiner (Luxilus albeolus), Satinfin Shiner
(Cyprinella analostana), Bluehead Chub (Nocomis leptocephalus), Rosyside Dace (Clinostomus
funduloides), Pinewoods Shiner (Lythrurus matutinus), Swallowtail Shiner (Notropis procne),
and Mountain Redbelly Dace (Chrosomus oreas) to also be suitable hosts for Atlantic Pigtoe.
2.1.2. Distribution, Habitat Requirements, and Status
Johnson (1970) reported the range of the Atlantic Pigtoe extended from the Ogeechee River
Basin in Georgia north to the James River Basin in Virginia; however, recent curation of the H.
D. Athearn collection uncovered valid specimens from the Altamaha River in Georgia (USFWS
2021b). In addition, USFWS (2021a) citing Alderman and Alderman (2014) reported two shells
from the 1880's that also documented the historical occurrence in the Altamaha River Basin. It
is presumed extirpated from the Catawba River Basin in North and South Carolina south to the
Altamaha River Basin (USFWS 2021a). The general pattern of its current distribution indicates
that the species is currently limited to headwater areas of drainages and most populations are
represented by few individuals. In North Carolina, aside from the Waccamaw River, it was once
found in every Atlantic Slope River basin. Except for the Tar River, it is no longer found in the
mainstem of the rivers within its historic range within North Carolina (Savidge et al. 2011). It is
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listed as Endangered in Georgia, South Carolina, and North Carolina, and as Threatened in
Virginia. It has a NatureServe rank of G1 (Critically Imperiled) (Natureserve, 2018).
The Atlantic Pigtoe has been found in multiple physiographic provinces, from the foothills of the
Appalachian Mountains, through the Piedmont and into the Coastal Plain, in streams less than
one meter wide to large rivers. The preferred habitat is a substrate composed of gravel and coarse
sand, usually at the base of riffles; however, it can be found in a variety of other substrates and
lotic habitat conditions.
The 2021 species status assessment outlines the overall health of the currently known
populations of Atlantic Pigtoe in terms of population and habitat factors. Population factors
include Management Unit (MU) Occupancy, Approximate Abundance, and Reproduction.
Habitat Factors include Water Quality, Water Quantity, Connectivity, and Instream Habitat
(Substrate). Each factor is evaluated on a scale ranging from High -Moderate -Low -Very Low- 0.
Categories labeled 0 indicate either likely extirpation or a lack of data. The list below outlines
the resiliency of the overall river basin and Atlantic Pigtoe MU's, where the evaluated factors are
listed by Combined Population, Combined Habitat, and Overall Resiliency, respectively
(USFWS 2021b):
James River Basin: (Low, Moderate, Low)
I. Craig Creek Subbasin — Craig/ Giles counties, VA (Moderate, High, Moderate)
2. Mill Creek — Bath/ Highland counties, VA (0, Moderate, 0)
3. Rivanna — Albemarle /Fluvanna counties, VA (0, Low, 0)
4. Upper James — Amhurst/Bedford/Botetourt/Lexington counties, VA (0, Moderate, 0)
5. Middle James — Buckingham/ Chesterfield/ Cumberland/ Goochland/ Henrico/
Powhatan counties, VA (0, Low, 0)
6. Appomattox — Appomattox/ Buckingham/ Cumberland/ Prince Edward counties, VA
(0, Moderate, 0)
Chowan River Basin: (Low, Moderate, Low)
7. Nottoway —Brunswick/ Dinwiddie/ Greensville/ Appomattox/ Buckingham/
Cumberland/ Prince Edward counties, VA (Moderate, Low, Moderate)
8. Meherrin — Brunswick/ Charlotte/ Halifax/ Lunenburg/ Mecklenburg counties, VA
(Low, Moderate, Low)
Roanoke River Basin: (Low, Moderate, Low)
9. Dan River Subbasin — Halifax/ Pittsylvania counties, VA and Caswell/ Granville/
Person/ Rockingham counties, NC (Low, Moderate, Low)
10. Roanoke — Halifax/ Northampton counties, NC (0, Moderate, 0)
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Tar River Basin: (High, Moderate, High)
11. Upper/Middle Tar —Granville/ Franklin/ Nash/ Person/ Vance counties, NC (High,
Moderate, High)
12. Lower Tar- Beaufort/Edgecombe/Pitt counties, NC (Low, Moderate, Low)
13. Fishing Creek Subbasin — Franklin/Halifax/Nash/Warren counties, NC (High,
Moderate, High)
14. Sandy/Swift Creek — Edgecombe/Franklin/Nash counties, NC (High, Moderate,
High)
Neuse River Basin: (Moderate, Low, Moderate)
15. Upper Neuse — Durham/Orange/Person counties, NC (Moderate, Low, Moderate)
16. Middle Neuse — Durham/Franklin/Johnson/Wake/Wayne/Wilson counties, NC
(Moderate, Low, Moderate)
Cape Fear River Basin: (Low, Low, Low)
17. New Hope — Chatham/Durham/Orange/Wake counties, NC (Moderate, Low,
Moderate)
18. Deep River Subbasin — Alamance/Chatham/Moore/Randolph counties, NC (Low,
Low, Low)
19. Cape Fear Mainstream — Cumberland/Harnett/Wake counties, NC (0, Low, 0)
20. Black — Bladen/Pender/Sampson counties, NC (0, High, 0)
Pee Dee River Basin: (Low, Low, Low)
21. Muddy Creek — Davidson/Forsyth/Stokes counties, NC (0, Low, 0)
22. Uwharrie/Little — Davidson/Montgomery/Randolph counties, NC (Low, Moderate,
Low)
23. Goose/Lanes — Anson/Union counties, NC (0, Low, O)
Catawba River Basin: (O, Low, O) One shell was observed in the 1800s in Long Creek,
Gaston County, NC
Edisto River Basin: (O, Moderate, O) Five shells were discovered in a European
collection, dating back to the 1800s, no individuals have been observed since. Precise
location of where shells originated is not known.
Savannah River Basin: (O, Low, O) Type specimen collected from this MU in 1834
(Richmond County, GA). Dive surveys in 2006 collected individuals that were later
identified as Elliptios, not Atlantic Pigtoe.
Ogeechee River Basin: (O, Moderate, O) Live individuals found in 1970s in
Williamson Swamp Creek (Johnson/Washington counties, GA), however it is presumed
extirpated due to a failure to locate Atlantic Pigtoe despite extensive surveys.
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Altamaha River Basin: (0, Moderate, 0) Two shells were located in the 1800s within
this MU but have not been recorded since.
2.1.3. Threats to Species
The cumulative effects of several factors, including sedimentation, point and non -point
discharge, stream modification (e.g., impoundment, channelization), coupled with the apparent
restricted range, are believed to have contributed to the decline of this species throughout its
range (USFWS 2021a). When mussel populations are reduced to a small number of individuals
and are restricted to short reaches of isolated streams, they are extremely vulnerable to
extirpation from a single catastrophic event or activity (Strayer et al. 1996). Catastrophic events
may consist of natural events such as flooding or drought, as well as human influenced events,
such as toxic spills.
Siltation resulting from improper erosion control of various land usage, including agriculture,
silviculture, and development activities, has been recognized as a major contributing factor to
degradation of mussel populations (McLaughlin and Cope 2017). Siltation has been documented
to be extremely detrimental to mussel populations by degrading substrate and water quality,
increasing potential exposure to other pollutants, and by directly smothering mussels (Ellis 1936,
Marking and Bills 1979). Sediment accumulations of less than 1 inch have been shown to cause
high mortality in most mussel species (Ellis 1936).
Sewage treatment effluent has been documented to significantly affect the diversity and
abundance of mussel fauna (Goudreau et al. 1988). Goudreau et al. (1988) found that recovery of
mussel populations might not occur for up to two miles below points of chlorinated sewage
effluent. The impact of impoundments on freshwater mussels has been well -documented
(USFWS 1992, Neves 1993). Construction of dams transforms lotic habitats into lentic habitats,
which results in changes with aquatic community composition. These changes associated with
inundation adversely affect both adult and juvenile mussels as well as fish community structure,
which could eliminate possible fish hosts for glochidia (Fuller 1974).
The introduction of exotic species, such as the Asian Clam (Corbicula fluminea) and Zebra
Mussel (Dreissena polymorpha), has also been shown to pose significant threats to native
freshwater mussels. The Asian Clam is now established in most of the major river systems in the
United States (Fuller and Powell 1973) including those streams still supporting surviving
populations of the Atlantic Pigtoe. Concern has been raised over competitive interactions for
space, food, and oxygen between this species and native mussels, possibly at the juvenile stages
(Neves and Widlak 1987, Alderman 1997). The Zebra Mussel, native to the drainage basins of
the Black, Caspian, and Aral seas, is an exotic freshwater mussel that was introduced into the
Great Lakes in the 1980s and has rapidly expanded its range into the surrounding river basins,
including those of the South Atlantic Slope (O'Neill and MacNeill 1991). This species competes
for food resources and space with native mussels and is expected to contribute to the extinction
of at least 20 freshwater mussel species if it becomes established throughout most of the eastern
United States (USFWS 1992). This species has not been recorded in the Cape Fear River Basin.
Atlantic Pigtoe appears to be particularly sensitive to pollutants and requires clean, oxygen -rich
water for all stages of life. All the remaining Atlantic Pigtoe populations are generally small in
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numbers and restricted to short reaches of isolated streams. The low numbers of individuals and
the restricted range of most of the surviving populations make them extremely vulnerable to
extirpation from a single catastrophic event.
2.1.4. Designated Critical Habitat
The Atlantic Pigtoe is listed as a Federally Threatened Species under the Endangered Species
Act (ESA) with Section 4(d) Rule and Critical Habitat Designation. In accordance with Section
4 of the ESA, Critical Habitat for listed species consists of:
(1) The specific areas within the geographical area occupied by the species at the time it is
listed, in which are found those physical or biological features (constituent elements) that
are:
a. essential to the conservation of the species, and
b. which may require special management considerations or protection
(2) Specific areas outside the geographical area occupied by the species at the time it is listed
in accordance with the provisions of Section 4 of the Act, upon a determination by the
Secretary that such areas are "essential for the conservation of the species."
On November 16, 2021, USFWS listed the Atlantic Pigtoe as a Threatened species under the
ESA. Critical habitat was revised with the listing (86 FR 64000) and consists of the following
(USFWS 2021a):
• Unit 1 QR1) - 29 RM (46.7 RKM) of Craig Creek in Craig and Botetourt counties,
Virginia
• Unit 2 QR2) -
1 RM (1.6 RKM) of Mill Creek in Bath County, Virginia
• Unit 3 (CR1)
- 4 RM (6.6 RKM) of Sappony Creek in the Chowan River Basin in
Dinwiddie County, Virginia
• Unit 4 (CR2)
- 64 RM (103 RKM) of the Nottoway River and a portion of Sturgeon
Creek in Nottoway, Lunenburg, Brunswick, Dinwiddie, and Greenville counties, Virginia
• Unit 5 (CR3)
— 5 RM (8 RKM) of the Meherrin River in Brunswick County, Virginia
• Unit 6 (RR1)
- 14 RM (22.5 RKM) of the Dan River in Pittsylvania County, Virginia and
Rockingham County, North Carolina
• Unit 7 (RR2) - 12 RM (19.3 RKM) of Aarons Creek in Granville County, North Carolina
and along the Mecklenburg County -Halifax County line in Virginia and North Carolina
• Unit 8 (RR3) —3 RM (4.8 RKM) of Little Grassy Creek in the Roanoke River Basin in
Granville County, North Carolina
• Unit 9 (TR1) - 91 RM (146.5 RKM) of the mainstem of the upper and middle Tar River
as well as several tributaries (Bear Swamp Creek, Crooked Creek, Cub Creek, and
Shelton Creek), in Granville, Vance, Franklin, and Nash counties, North Carolina.
• Unit 10 (TR2) — 50 RM (80.5 RKM) of Sandy/Swift Creek in Granville, Vance, Franklin,
and Nash counties, North Carolina
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• Unit 11 (TR3) - 85 RM (136.8 RKM) in Fishing Creek, Little Fishing Creek, Shocco
Creek, and Maple Branch located in Warren, Halifax, Franklin, and Nash counties, North
Carolina
• Unit 12 (TR4) - 30 RM (48.3 RKM) of the Lower Tar River, lower Swift Creek and
lower Fishing Creek in Edgecombe County, North Carolina
• Unit 13 (NR1) - 60 RM (95 RKM) in four subunits including the Flat, Little, Eno, and
Upper Eno rivers in Person, Durham, and Orange counties, North Carolina
• Unit 14 (NR2) - 61 RM (98.2 RKM) in five subunits including Swift Creek, Middle
Creek, the Upper and Middle Little rivers, and Contentnea Creek in Wake, Johnston, and
Wilson counties, North Carolina
• Unit 15 (CFI) - 4 RM (6.4 RKM) of habitat in New Hope Creek in Orange County,
North Carolina
• Unit 16 (CF2) - 10 RM (16.1 RKM) of the Deep River in Randolph County, North
Carolina, including the mainstem as well as Richland Creek and Brush Creek
• Unit 17 (YR1) — 40 RM (64.4 RKM) of the Little River in Randolph and Montgomery
counties, North Carolina
*JR, CR, RR, TR, NR, CF and YR denote James River, Chowan River, Roanoke River, Tar
River, Neuse River, Cape Fear River and Yadkin River basins, respectively.
Critical Habitat Unit 14 is the closest Critical Habitat Unit with the Swift Creek portion 47.2 SM
from the Project and the Little River portion 30.2 SM from the Project (Appendix A, Figure 2).
3.0 SURVEY EFFORTS
Field surveys were conducted by Three Oaks personnel Tom Dickinson (Permit # ES00343) and
Nathan Howell on March 20, 2024. Figure 1 shows the reach surveyed (Appendix A).
3.1. Stream Conditions at Time of Surveys
The survey reach consisted of approximately 1,000 meters (m) of Beaverdam Creek. The
channel ranged from two to four meters wide, with banks one to two meters high that generally
exhibited some signs of erosion and scour, ranging from relatively minor to actively failing. The
substrate was dominated by fine sand and silt, interspersed with pebbles in a few areas.
Significant accumulations of unconsolidated sand and silt accumulations were generally
pervasive. Sand bars were common, making the wetted width of the stream considerably smaller
than the channel width in some areas. Stream depths ranged up to 0.5 meters deep and the stream
was flowing clear during the efforts. In the upper reaches, the stream contained a significant
amount of construction aggregate and trash. The stream flowed through a generally narrow shrub
and forested buffer, flanked on either side by agricultural fields, residential areas, and active
housing development.
Beaverdam Creek Rehab Project Survey Report April 2024
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3.2. Mussel Survey Methodology
The reach depicted in Figure 1 was surveyed with methods described below for mussels,
targeting Atlantic Pigtoe. Areas of appropriate habitat were searched, concentrating on the stable
habitats preferred by the target species. The survey team spread out across the site into survey
lanes. Visual surveys were conducted using glass bottom view buckets (bathyscopes). Tactile
methods were employed, particularly in streambanks and under submerged rootmats.
4.0 RESULTS: BEAVERDAM CREEK SURVEY REACH
A total of 4 person -hours of survey time were spent in the reach, during which no evidence of
freshwater mussels was observed.
5.0 DISCUSSION/CONCLUSIONS
While suitable habitat was present, the Atlantic Pigtoe was not observed during these efforts;
Given the lack of nearby records and results of these surveys, adverse effects to the species are
very unlikely to occur as a result of project construction. Strict adherence to erosion control
standards should minimize the potential for any adverse impacts to occur.
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6.0 LITERATURE CITED
Alderman, J. M. 1997. Monitoring the Swift Creek Freshwater mussel community. Unpublished
report presented at the UMRCC symposium on the Conservation and Management of
Freshwater Mussels II Initiative for the Future. Rock Island, IL, UMRCC.
Alderman, J.M., Alderman, J.D. 2014. Draft 2014 Atlantic Pigtoe Conservation Plan. Prepared
for Virginia Department of Game and Inland Fisheries. Richmond, VA.
Conrad, T.A. 1834. New freshwater shells of the United States, with coloured illustrations; and a
monograph of the genus Anculotus of Say; also a synopsis of the American naiades. J.
Dobson, 108 Chestnut Street, Philadelphia, Pennsylvania. 1-76, 8 pls.
Eads, C.B. and J.F. Levine. 2012. Refinement of Growout Techniques for Four Freshwater
Mussel Species. Final Report submitted to NC Wildlife Resources Commission, Raleigh,
NC. 15pp.
Ellis, M. M. 1936. Erosion Silt as a Factor in Aquatic Environments. Ecology 17: 29-42.
Fuller, S.L.H. 1974. Clams and mussels (Mollusca: Bivalvia). In: Pollution ecology of freshwater
invertebrates, ed. C.W. Hart and S.L.H. Fuller, 215-73. New York: Academic Press.
Fuller, S. L. H. and C. E. Powell. 1973. Range extensions of Corbicula manilensis (Philippi) in
the Atlantic drainage of the United States. Nautilus 87(2): 59.
Goudreau, S. E., R. J. Neves, and R. J. Sheehan. 1988. Effects of Sewage Treatment Effluents on
Mollusks and Fish of the Clinch River in Tazewell County, Virginia. USFWS: 128 pp.
Johnson, R.I. 1970. The systematics and zoogeography of the Unionidae (Mollusca: Bivalvia) of
the southern Atlantic slope region. Bulletin of the Museum of Comparative Zoology.
140: 263-449.
Marking, L.L., and T.D. Bills. 1979. Acute effects of silt and sand sedimentation on freshwater
mussels. Pp. 204-211 in J.L. Rasmussen, ed. Proc. of the UMRCC symposium on the
Upper Mississippi River bivalve mollusks. UMRCC. Rock Island IL. 270 pp.
McLaughlin, R.A., Cope, G.W. 2017. Erosion, Sediment, and Turbidity Control and Monitoring
Research to Meet Water Quality Goals. North Carolina Department of Transportation.
https://rosap.ntl.bts.gov/view/dot/54537/dot-54537 DSI.pdf
Neves, R.J. 1993. A state of the Unionids address. Pp. 1-10 in K.S. Cummings, A.C. Buchanan,
and L.M. Kooch, eds. Proc. of the UMRCC symposium on the Conservation and
Management of Freshwater Mussels. UMRCC. Rock Island IL.189 pp.
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Neves, R. J. and J. C. Widlak. 1987. Habitat Ecology of Juvenile Freshwater Mussels (Bivalvia:
Unionidae) in a Headwater Stream in Virginia. American Malacological Bulletin 1(5): 1-
7.
North Carolina Natural Heritage Program (NCNHP). 2024. North Carolina Natural Heritage
Data Explorer. hllps://ncnhde.natureserve.org/. January 2024 version.
O'Dee, S.H., and G.T. Waters. 2000. New or confirmed host identification for ten freshwater
mussels. Pp. 77-82 in R.A. Tankersley, D.I. Warmolts, G.T. Waters, B.J. Armitage, P.D.
Johnson, and R.S. Butler (eds.). Freshwater Mollusk Symposia Proceedings Part I.
Proceedings of the Conservation, Captive Care and Propagation of Freshwater Mussels
Symposium. Ohio Biological Survey Special Publication, Columbus.
O'Neill, C. R., Jr., and D. B. MacNeill. 1991. The zebra mussel (Dreissena polymorpha): an
unwelcome North American invader. Sea Grant, Coastal Resources Fact Sheet. New
York Sea Grant Extension. 12 pp.
Savidge, T. W., J. M. Alderman, A. E. Bogan, W. G. Cope, T. E. Dickinson, C. B. Eads,S. J.
Fraley, J. Fridell, M. M. Gangloff, R. J. Heise, J. F. Levine, S. E. McRae, R.B. Nichols,
A. J. Rodgers, A. Van Devender, J. L. Williams and L. L. Zimmerman. 2011. 2010
Reevaluation of Status Listings for Jeopardized Freshwater and Terrestrial Mollusks in
North Carolina. Unpublished report of the Scientific Council on Freshwater and
Tereestrial Mollusks. 177pp.
Strayer, D. L., S. J. Sprague and S. Claypool, 1996. A range -wide assessment of populations of
Alasmidonta heterodon, an endangered freshwater mussel (Bivalvia: Unionidae). J.N.
Am. Benthol. Soc., 15(3):308-317.
U.S. Fish and Wildlife Service (USFWS) 1992. Special report on the status of freshwater
mussels.
U.S. Fish and Wildlife Service (USFWS). 2021a. Endangered and Threatened Wildlife and
Plants: Threatened Species Status with Section 4(d) Rule and Designation of Critical
Habitat for Atlantic Pigtoe. 50 CFR 17:86 FR 64000, 64000-64053. Docket Nos. FWS-
R4-ES-2018-0046FF09E21000 FXES 1111090FEDR 223.
U.S. Fish and Wildlife Service (USFWS). 2021b. Species Status Assessment Report for the
Atlantic Pigtoe (Fusconaia masoni) Version 1.4.
U.S. Fish and Wildlife Service (USFWS). 2024. Information for Planning and Consultation
(IPaC). Accessed February 2024. https://ipac.ecosphere.fws.gov/
Virginia Department of Game and Inland Fisheries (VDGIF). 2014. Atlantic Pigtoe
Conservation Plan. Bureau of Wildlife Resources. VDGIF, Richmond, VA. 31 pp.
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Wolf, E.D. 2012. Propagation, Culture, and Recovery of Species at Risk Atlantic Pigtoe.
Virginia Tech Conservation Management Institute, Project No. 11-108. 55pp.
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APPENDIX A
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NCNHP Element Occurrences
- Designated Critical Habitat
— County Boundary
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Aquatic Species Survey
Beaverdam Creek Rehabilitation Project
NCNHP Element Occurrences
& Designated Critical Habitat
Johnston County, North Carolina
Date. Apri12024
Scale_ 0 2 4 Mlles
I r l
Job No.: 24-320
Drawn Ey.
—liecked By
KEMS
TED
Figure
APPENDIX B
Select Photographs
Beaverdam Creek Rehab Project Survey Report April 2024
Job# 24-320 Page 15
Typical Lower Survey Reach habitat
Beaverdam Creek Rehab Project Survey Report April 2024
Job# 24-320 Page 16
-W
A.'