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Cary Environmental Monitoring Program: Stream Chemistry Data 1985-2017
Victoria
R
Kelly
Cary Institute of Ecosystem Studies
kellyv@caryinstitute.org
https://orcid.org/0000-0003-3418-9211
2019-02-15
The Cary Institute of Ecosystem Studies Environmental Monitoring
Program is a long-term data collection program designed to understand
how the environment changes over time. The program includes monitoring
of climate including temperature and precipitation, as well as
variables related to air pollution, such as acid deposition and ozone,
water pollution and streamwater hydrology. The Cary Institute of
Ecosystem Studies, Environmental Monitoring Program furnishes data
under the following conditions: The data have received quality
assurance scrutiny by our program, and, although we are confident of
the accuracy of these data, the Cary Institute will not be held liable
for errors in these data. Data are subject to change resulting from
updates in data screening or models used. Data citation: The following
is a standard citation for referencing data from the Cary Institute of
Ecosystem Studies, Environmental Monitoring Program: Cary Institute of
Ecosystem Studies, Environmental Monitoring Program. 2008 (or current
year). Cary Institute of Ecosystem Studies, Box AB, Millbrook, NY
12545, www.caryinstitute.org. Those wishing to publish data from the
Cary Institute of Ecosystem Studies, Environmental Monitoring Program
are encouraged to contact Data Manager Vicky Kelly,
kellyv@caryinstitute.org.
Cary Institute
Cary Institute
Cary Institute of Ecosystem Studies
Cary Institute of Ecosystem Studies
data
data
climate
climate
stream
stream
streamwater
streamwater
chemistry
chemistry
conductivity
conductivity
conductance
conductance
pH
pH
calcium
calcium
magnesium
magnesium
potassium
potassium
sodium
sodium
chloride
chloride
sulfate
sulfate
nitrate
nitrate
ammonium
ammonium
phosphate
phosphate
silica
silica
dissolved organic carbon
dissolved organic carbon
The data in this file start 17 January 1985 and end 27 December 2017.
Data collection is ongoing. Sample collection began in November 1985
(Site 2) and January 1985 (Site 4). Geographic location Stream samples
are collected at the end of every month at two sites on the East
Branch of Wappinger Creek at the Cary Institute of Ecosystem Studies.
Before 1996, samples were collected at four sites. Redundancy in the
data and cost of analysis prompted us to discontinue collecting
samples at two of the sites. The two remaining sites are Site 2 (Fern
Glen, GPS coordinates N41.78707, W73.73317) and Site 4 (Lowlands, GPS
coordinates N41.79235, W73.74937). Intellectual Rights This
information is released under the Creative Commons license -
Attribution-NonCommercial - CC BY- NC
(https://creativecommons.org/licenses/by/4.0/).
This information is released under the Creative Commons license -
Attribution - CC BY (https://creativecommons.org/licenses/by/4.0/).
The consumer of these data ("Data User" herein) is required
to cite it appropriately in any publication that results from its use.
The Data User should realize that these data may be actively used by
others for ongoing research and that coordination may be necessary to
prevent duplicate publication. The Data User is urged to contact the
authors of these data if any questions about methodology or results
occur. Where appropriate, the Data User is encouraged to consider
collaboration or co-authorship with the authors. The Data User should
realize that misinterpretation of data may occur if used out of
context of the original study. While substantial efforts are made to
ensure the accuracy of data and associated documentation, complete
accuracy of data sets cannot be guaranteed. All data are made
available "as is." The Data User should be aware, however,
that data are updated periodically and it is the responsibility of the
Data User to check for new versions of the data. The data authors and
the repository where these data were obtained shall not be liable for
damages resulting from any use or misinterpretation of the data. Thank
you.
Millbrook, NY
-73.73317
41.78707
41.78707
-73.73317
1985-01-07
2017-12-31
ongoing
Victoria
R
Kelly
Cary Institute of Ecosystem Studies
kellyv@caryinstitute.org
https://orcid.org/0000-0003-3418-9211
The stream is a tributary to the main branch of Wappinger Creek, which
flows into the Hudson River at Wappingers Falls. Approximately 1.6 km
upstream from the gauging station is the Village of Millbrook sewage
treatment plant. In addition to the sewage treatment plant, Dietrich
Pond and its associated dam can influence the stream. Stream samples
are collected at the end of every month. Samples are collected when
the stream is as near base flow as possible, however, base flow varies
seasonally and is generally higher in winter than summer. The samples
are analyzed at the Cary Institute Analytical Laboratory for pH,
conductivity, nitrate, sulfate, ammonium, phosphate, chloride, sodium,
calcium, magnesium, potassium and silica and DOC (see Table below for
analytical methods). Samples collected between 1985 and 1998 were not
preserved in any way and were stored in the light at room temperature
before analyses were completed. Samples from January 1999 onward are
preserved as follows. Samples are divided into three aliquots, one
aliquot is filtered and preserved with Optima grade concentrated
sulfuric acid (0.5 ml per 125 ml of sample) for analysis of nitrate,
ammonium, phosphate, and DOC. Another aliquot is filtered and analyzed
for sulfate, chloride, sodium, calcium, magnesium, potassium and
silica. Silica analyses are completed within 4 days of sample
collection. The third aliquot is untreated and analyzed for
conductivity and pH.
STREAM CHEMISTRY DATA QUALITY ASSURANCE & QUALITY CONTROL
PARAMETERS & METHODS
All sample bottles and glassware are cleaned with deionized and air
dried. Once each year a sample bottle is filled with deionized water,
filtered, acidified and analyzed as a regular sample. This is to
ensure that the sample handling procedures introduce no contamination.
When analytical results are received from the Cary Institute
analytical lab, data are checked by examining time series graphs of
sample concentrations for each analyte. Any data that are potential
outliers are reanalyzed. If reanalysis returns the same results, no
changes are made to the dataset. If reanalysis returns different
results, ion balances are examined and the sample is examined for
potential contamination. The concentration value that returns the best
ion balance is submitted to the dataset unless there is obvious
contamination, in which case the data value is replaced with a missing
value code.
Cary_Stream_Chemistry_Data.csv
Cary Stream Chemistry Data.
Cary_Stream_Chemistry_Data.csv
76135
76253e75b031b6fe962d2371fac8d9bd
1
\r\n
column
,
date
Date in MM/DD/YYYY format where MM is month number, DD is date number and YYYY is year
date
MM/DD/YYYY
blank
empty cell
SITE
Site number on Wappinger Creek
float
unitless
natural
2
4
blank
empty cell
COND
Conductivity (umho)
float
umho
real
175
583
blank
empty cell
Ca
Concentration of Ca+2 (mg/L) (DL 0.01 mg/L)
float
mg/L
real
18
47.3
blank
empty cell
Mg
Concentration of Mg+2 (mg/L) (DL 0.01 mg/L)
float
mg/L
real
4.76
14.8
blank
empty cell
K
Concentration of K+ (mg/L) (DL 0.01 mg/L)
float
mg/L
real
0.62
2.32
blank
empty cell
Na
Concentration of Na+ (mg/L) (DL 0.01 mg/L)
float
mg/L
real
6.99
73.1
blank
empty cell
NH4_N
Concentration of NH4+_N (mg/L) (DL 0.02 mg/L)
float
mg/L
real
0
0.24
blank
empty cell
pH
pH
float
pH units
real
7.36
9.26
blank
empty cell
SO4
Concentration of SO4-2 (mg/L) (DL 0.02 mg/L)
float
mg/L
real
7.25
34.6
blank
empty cell
NO3_N
Concentration of NO3-_N (mg/L) (DL 0.02 mg/L)
float
mg/L
real
0
3.64
blank
empty cell
Cl
Concentration of Cl- (mg/L) (DL 0.02 mg/L)
float
mg/L
real
12.1
119
blank
empty cell
PO4_P
Concentration of PO4-3_P (mg/L) (DL 0.002 mg/L)
float
mg/L
real
0
0.42
blank
empty cell
SiO2
Concentration of SiO2 (mg/L) (DL 0.1 mg/L)
float
mg/L
real
0
10.3
blank
empty cell
DOCppm
Concentration of DOC (ppm) (DL 0.05 ppm)
float
ppm
real
1.12
5.07
blank
empty cell
TEMP
Stream temperature at time of sampling (C)
float
degrees C
real
-1.2
26
blank
empty cell
Q
Stream flow rate at time sample collected (m^3/s)
float
m^3/s
real
0.05
8.29
blank
empty cell
777