Watershed 79 Historical Water Chemistry, 1989-1994
Metadata:
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Identification_Information:
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Citation:
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Citation_Information:
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Originator: Amatya, Devendra M. and Trettin, Carl C.
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Publication_Date: 2012
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Title:
Watershed 79 Historical Water Chemistry, 1989-1994- Geospatial_Data_Presentation_Form: database
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Description:
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Abstract:
- Approximately weekly water samples were collected upstream of the Watershed 79 weir (draining a second-order watershed that includes the first-order watersheds, WS77 and WS80) on the Santee Experimental Forest during the 1989-1994 period. Chemical analysis of these samples was later performed and concentrations were reported for the following analytes: pH, NO3/NO2-N, NH4-N, PO4-P, Cl, K, Na, Ca, Mg, SO4 (converted to SO4-S for purposes of this database), SiO3, HCO3, Total Kjehldal Nitrogen (TKN) and Total Nitrogen (TN). This document describes the data, sample collection and analytical procedures.
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Purpose:
- Hurricane Hugo devastated the Santee Experimental Forest in September 1989, and stream flow monitoring was resumed and water quality sampling was initiated on Watershed 79 during the 1989-1994 period to document the effects of this disturbance on water quality during subsequent watershed recovery.
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Time_Period_of_Content:
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Time_Period_Information:
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Range_of_Dates/Times:
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Beginning_Date: 1989
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Ending_Date: 1994
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Currentness_Reference:
- ground condition
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Status:
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Progress: Complete
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Maintenance_and_Update_Frequency: None planned
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Spatial_Domain:
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Description_of_Geographic_Extent:
- The geographic area covered by the dataset is Watershed 79 in the Santee Experimental Forest.
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Bounding_Coordinates:
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West_Bounding_Coordinate: -79.78153
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East_Bounding_Coordinate: -79.76300
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North_Bounding_Coordinate: 33.15007
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South_Bounding_Coordinate: 33.13284
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Keywords:
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Theme:
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Theme_Keyword_Thesaurus: None
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Theme_Keyword: Forested watersheds
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Theme_Keyword: water quality
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Place:
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Place_Keyword_Thesaurus: None
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Place_Keyword: South Carolina
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Place_Keyword: Coastal Plain
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Place_Keyword: Santee Experimental Forest
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Place_Keyword: Watershed 79
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Access_Constraints: None
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Use_Constraints:
- These data were collected by USDA Forest Service researchers. In order to use the data in a publication, presentation or other research product you must agree to acknowledge its source. Please use the reference below when citing this work:
(Data name) courtesy of the USDA Forest Service Center for Forested Wetlands Research.
The following statement may be added after an acknowledgement or credit:
The USDA Forest Service Center for Forested Wetlands Research homepage is http://www.srs.fs.usda.gov/charleston/.
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Data_Quality_Information:
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Attribute_Accuracy:
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Attribute_Accuracy_Report:
- Laboratory analyses were performed in the USDA Forest Service analytical laboratory at its facility in Charleston, SC. These analyses were carried out according to protocols specified in the following volume:
Standard Methods for the Examination of Water and Wastewater. Ed. Clesceri, L.S., A.E. Greenberg and A.D. Eaton. 1989. American Public Health Association. Washington, DC.
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Logical_Consistency_Report:
- Laboratory analyses were performed in the USDA Forest Service analytical laboratory at its facility in Charleston, SC. These analyses were carried out according to protocols specified in the following volume:
Standard Methods for the Examination of Water and Wastewater. Ed. Clesceri, L.S., A.E. Greenberg and A.D. Eaton. 1989. American Public Health Association. Washington, DC.
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Completeness_Report:
- Approximately weekly water samples were collected upstream of the Watershed 79 weir between 10/13/89 and 12/29/94.
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Lineage:
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Methodology:
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Methodology_Type: Field
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Methodology_Description:
- Between 10/13/89 and 12/29/94, approximately weekly water samples were collected upstream of the Watershed 79 weir in clean plastic bottles and returned to the laboratory on ice. At the time of sample collection, stream pH was measured using a hand-held logger and probe.
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Methodology:
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Methodology_Type: Lab
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Methodology_Description:
- Samples were brought to the Charleston laboratory and refrigerated until processing could begin. The samples were filtered (details of filtration procedure are not known at this time) and then subjected to analysis according to standard protocols (Clesceri et al, 1989).
Most analyses (NO3/NO2-N, NH4-N, PO4-P, Cl, SO4, SiO3, TKN and TN) were performed using the Technicon TRAACS-800 system. Cation analyses (K, Na, Ca, and Mg) were performed using a Perkin-Elmer Model 3100 Atomic Absorption Spectrometer.
Finally, HCO3 was measured by the titration method using an automatic titrimeter.
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Methodology_Citation:
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Citation_Information:
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Originator: Clesceri, L.S., A.E. Greenberg and A.D. Eaton (eds).
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Publication_Date: 1989
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Title:
Standard Methods for the Examination of Water and Wastewater- Edition: 17
- Geospatial_Data_Presentation_Form: document
- Publication_Information:
- Publication_Place: Washington, DC
- Publisher: American Public Health Association
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Process_Step:
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Process_Description:
- Data collected in the field or during laboratory analyses were recorded into electronic spreadsheets and checked for missing values and/or outliers.
For the sake of consistency, data reported for SO4 during the 1989-1994 period have been adjusted to reflect the concentration of SO4-S.
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Process_Date: Unknown
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Entity_and_Attribute_Information:
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Overview_Description:
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Entity_and_Attribute_Overview:
- Variables included in the dataset WS79_historical_chemistry_rev.xlsx:
Location = watershed name (WS79 = Watershed 79);
Instr_ID = gauging station name (Weir79 = WS79 weir);
Date_ = date associated with water chemistry data (format MM/DD/YYYY);
pH (alias 'pH') = stream pH;
NO3_NO2_N_mgL (alias 'NO3/NO2-N') = nitrogen concentration in the form of nitrate/nitrite, in mg/L;
NH4_N_mgL (alias 'NH4-N') = nitrogen concentration in the form of ammonium, in mg/L;
PO4_P_mgL (alias 'PO4-P') = phosphorus concentration in the form of phosphate, in mg/L;
Cl_mgL (alias 'Cl') = chloride concentration, in mg/L;
K_mgL (alias 'K') = potassium concentration, in mg/L;
Na_mgL (alias 'Na') = sodium concentration, in mg/L;
Ca_mgL (alias 'Ca') = calcium concentration, in mg/L;
Mg_mgL (alias 'Mg') = magnesium concentration, in mg/L;
SO4_S_mgL (alias 'SO4-S') = sulfur concentration in the form of sulfate, in mg/L;
TKN_mgL (alias 'TKN') = total Kjeldahl nitrogen concentration, in mg/L;
SiO3_mgL (alias 'SiO3') = silicate concentration, in mg/L;
HCO3_mgL (alias 'HCO3') = bicarbonate concentration, in mg/L; and
TN_mgL (alias 'TN') = total nitrogen concentration, in mg/L.
All missing data were originally assigned the value "-9999"; during database development this code was changed to "null"
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Entity_and_Attribute_Detail_Citation:
- None
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Metadata_Reference_Information:
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Metadata_Date: 20110713
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Metadata_Contact:
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Contact_Information:
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Contact_Organization_Primary:
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Contact_Organization: USDA Forest Service, Southern Research Station, Center for Forested Wetlands Research
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Contact_Person: Andy Harrison
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Contact_Position: Hydrology Technician
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Contact_Address:
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Address_Type: mailing and physical
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Address: 3734 Hwy 402
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City: Cordesville
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State_or_Province: SC
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Postal_Code: 29434
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Country: USA
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Contact_Voice_Telephone: 843 336-5603
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Metadata_Standard_Name: FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata
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Metadata_Standard_Version: FGDC-STD-001.1-1999
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