Santee Experimental Forest, Watershed 79 Daily Mean Flow Data, 1966-1990

Metadata:
Identification_Information:
Citation:
Citation_Information:
Originator: Amatya, Devendra M. and Trettin, Carl C.
Publication_Date: 2012
Title:
Santee Experimental Forest, Watershed 79 Daily Mean Flow Data, 1966-1990
Geospatial_Data_Presentation_Form: database
Description:
Abstract:
This data product contains daily mean flow rates (liters per second) measured at the Watershed 79 weir on the Santee Experimental Forest near Cordesville, SC from 1966 to 1990. Watershed 79 is a 500 ha second-order watershed that was established in 1966 on the Santee Experimental Forest. It encompasses both of the paired first-order watersheds, Watershed 77 and Watershed 80. Elevation ranges from 4 to 10 meters above sea level, and average watershed slope is 3%. The stream channel is approximately 1640 meters long, and flow is monitored at the watershed outlet using a compound v-notch weir with a box culvert on either side of it.

The predominant forest cover types on Watershed 79 are pine and mixed hardwoods. About 25 % of the watershed is covered by wetlands, comprising bottomland hardwoods and wet pine flats. The major treatments imposed on the watershed over its history have been forest thinning and prescribed fire. Watershed 79 also suffered major damage during Hurricane Hugo in September 1989.
Purpose:
The purpose of Watershed 79 when established in 1966 was to expand the scale at which research on the effects of watershed size on precipitation-runoff relationships could be conducted on the Santee Experimental Forest.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1966
Ending_Date: 1990
Currentness_Reference:
ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Description_of_Geographic_Extent:
The geographic area covered by the dataset is that defined by the boundary of Watershed 79 in the Santee Experimental Forest.
Bounding_Coordinates:
West_Bounding_Coordinate: -79.78153
East_Bounding_Coordinate: -79.76300
North_Bounding_Coordinate: 33.15007
South_Bounding_Coordinate: 33.13284
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Forested wetlands
Theme_Keyword: Poorly drained soils
Theme_Keyword: Outflow (runoff)
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: South Carolina
Place_Keyword: Coastal Plain
Place_Keyword: Santee Experimental Forest
Place_Keyword: Watershed 79
Access_Constraints: None
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/.
Back to Top
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Stage was measured at 15-minute intervals using an ADR device accurate to the nearest 0.01 foot. Submerged flow (if any) was measured using an FW-1 recorder. Daily mean flow values were calculated by translating the ADR tapes to obtain stage values, using these values with stage-discharge relationship equations for the weir in a Fortran program to compute the corresponding 15-minute flow rates, and then averaging these rates to get the daily mean flow rates. A staff gauge was mounted on the face of the blockhouse to allow direct comparison of stage data to manual readings.
Logical_Consistency_Report:
Visual inspection and comparison with flow data from other SEF stations (as well as daily rainfall data) were used to expose anomalous data.
Completeness_Report:
Flow monitoring was discontinued starting 11/1/73 but was resumed on 11/1/89 following the devastation caused by Hurricane Hugo on 9/21/89. However, reliable historic data is only available until 10/31/90 for this site.
Lineage:
Methodology:
Methodology_Type: Field
Methodology_Description:
In 1966 the Forest Service constructed a compound v-notch weir and associated blockhouse (to house monitoring instruments) at the Watershed 79 outlet on Lotti Road. Stage data were recorded on tapes at 15-minute intervals by analog-to-digital water level recording (ADR) equipment. Data collection ceased on 11/1/90.
Process_Step:
Process_Description:
The ADR tape data were read (picked by hand or translated to ASCII code using a photoelectric reader) and 15-minute stage values were converted to the corresponding flow values using stage-discharge equations for the weir in a Fortran program. Daily mean flow rates were generated by averaging the 15-minute flow rates.
Process_Date: Unknown
Back to Top
Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
Variables included in the dataset WS79_historical_data.xlsx:

Location = watershed name (WS79 = Watershed 79);
Instr_ID = gauging station name (Weir79 = water level recorder used in conjunction with WS79 weir);
Date_ = date associated with stage data (format MM/DD/YYYY); and
Dailyflow_ = daily mean flow rate, in L/sec.

All missing data were originally assigned the value "-9999"; during database development this code was changed to "null"
Entity_and_Attribute_Detail_Citation:
None
Back to Top
Metadata_Reference_Information:
Metadata_Date: 20130312
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: USDA Forest Service, Southern Research Station, Center for Forested Wetlands Research
Contact_Person: Andy Harrison
Contact_Position: Hydrology Technician
Contact_Address:
Address_Type: mailing and physical
Address: 3734 Hwy 402
City: Cordesville
State_or_Province: SC
Postal_Code: 29434
Country: USA
Contact_Voice_Telephone: 843 336-5603
Metadata_Standard_Name: FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001.1-1999
Back to Top