Appendix V Other Data

Appendix V

Other Water Quality Data
in the
Roanoke River Basin
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232 Appendix V – Other Water Quality Data

Other Water Quality Research

North Carolina actively solicits "existing and
readily available" data and information for each
basin as part of the basinwide planning process.
Data meeting DWQ quality assurance objectives are
used in making use support determinations. Data
and information indicating possible water quality
problems are investigated further. Both quantitative
and qualitative information are accepted during the
solicitation period.

High levels of confidence must be present in order
for outside quantitative information to carry the
same weight as information collected from within
DWQ. This is particularly the case when
considering waters for the Impaired categories in
the Integrated Report (303(d) list). Methodology
for soliciting and evaluating outside data is
presented in North Carolina’s 2002 Integrated
Report http://h2o.enr.state.nc.us/tmdl/Docs_303/2002/2002%20Integrated%20Rept.pdf
(Appendix I). The next data solicitation period for the Roanoke River Basin is planned for fall
2008.
DWQ data solicitation includes
the following:

• Information, letters and photographs
regarding the uses of surface waters for
boating, drinking water, swimming,
aesthetics and fishing.
• Raw data submitted electronically and
accompanied by documentation of
quality assurance methods used to collect
and analyze the samples. Maps showing
sampling locations must also be included.
• Summary reports and memos, including
distribution statistics and accompanied
by documentation of quality assurance
methods used to collect and analyze the
data.
Contact information must accompany all
data and information submitted.

Any data submitted to DWQ from other water sampling programs conducted in the Roanoke
River basin have been reviewed. Data that meet quality and accessibility requirements were
considered for use support assessments and the 303(d) list. These data are also used by DWQ to
adjust the location of biological and chemical monitoring sites.

In particular, DWQ use data collected by the U.S. Geological Survey (USGS) at five sites in the
lower Roanoke River. USGS used a continuous monitoring (15-minute intervals) in situ
multiparameter water-quality sensor connected to a data logger to collected specific conductance,
pH, water temperature, and DO concentration. DWQ also used NC Department of Health and
Human Services fish consumption advisories and advice. For more information regarding fish
consumption advisories, call [phone] or visit the NC DHHS Division of Public Health
website at http://www.schs.state.nc.us/epi/fish/current.html. These data were used by DWQ to assign use
support ratings.

Subbasin Station
Number
AU
Number
Sampling
Location
Data
Source
03-02-08 NA23 23-(26)a Roanoke River at Halifax, NC USGS
03-02-08 NA24 23-(26)b1 Roanoke River at Oak City, NC USGS
03-02-09 NA25 23-(26)b2 Roanoke River at SR1100 near Grabtown, NC USGS
03-02-09 NA27 23-(26)b3 Roanoke River at Jamesville, NC USGS
03-02-09 NA26 23-(53) Roanoke River at NC 45 near Westover, NC USGS
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234 Appendix V – Other Water Quality Data