Santee Experimental Forest, Watershed 77: streamflow, water chemistry, water table, and weather data
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dataset
posted on 2025-01-22, 03:59authored byDevendra M. Amatya, Carl C. Trettin
This data publication contains streamflow, water chemistry, water table and weather data measured at the Watershed 77 (WS77) on the Santee Experimental Forest near Cordesville, South Carolina from 1964 to 2019. The major treatments imposed on this watershed over its history have been forest thinning and prescribed fire. Watershed 77 also suffered major damage during Hurricane Hugo in September 1989 (as did the control Watershed 80), which is reflected in the measurement periods. Daily streamflow records are provided from 1964-1981, November 1989-2000, and 2003-2019 as well as 10- or 15-minute streamflow from 2003-2019. Approximately weekly water chemistry samples were collected upstream of the Watershed 77 weir from 1976-1982 and 1989-1994. From 2003-2019 stream water samples were collected during periods of active flow by an automated sampler on a flow-proportional basis, and starting in 2006 additional water quality parameters were measured in situ on an approximately weekly basis. Well water levels were monitored manually approximately every two weeks from 1964-1971 (in a network of 24 non-recording wells) and 1992-1995 (in a network of 42 non-recording wells) on Watershed 77. Hourly well water levels were electronically recorded from 2005-2019. Daily precipitation was recorded manually from 1963-1984 at 5 different gauges near WS77. Daily precipitation was also recorded at the Met 5 location from 1963-1966 and electronically from 1989-1997. Daily temperatures were recorded 1996-2000. From September 2001 through 2019 hourly air temperature, soil temperature, and rainfall were recorded at the Met 5 location. The purpose of Watershed 77 when established in 1963 was to provide a site for research on understanding runoff and evapotranspiration processes and the water balance. Since then research has been conducted on the effects of management treatments such as thinning and prescribed burns (taking place since 1976) as well as natural disturbances (such as Hurricane Hugo in 1989) on the hydrology, water quality, carbon dynamics, soils and vegetation of low gradient, poorly drained forested watersheds in the South Carolina Coastal Plain. * This metadata applies to the raw data available through the full data publication download. Summary data available through the online query are calculated based on user selections and should be carefully interpreted.
Original data package published on 12/18/2019. On 06/09/2020 additional data were added to this package: 2019 weather and streamflow data were added, 2018-2019 water table data were added for the Wells J and K as well as for 4 additional wells (2, 12, 92, and 93), 2018 water quality data were updated to remove a few outliers, and 2019 water quality data were added. Metadata were also updated to denote these changes.
*IMPORTANT: On 01/12/2024 a second edition of these data became available (Amatya and Trettin 2024; https://doi.org/10.2737/RDS-2019-0033-2). This new edition includes the addition of data from 2020-2022, but it also includes some data corrections. Therefore, this newer edition of the data should be used.
For more information about the Santee Experimental Forest go to: https://www.fs.usda.gov/research/srs/forestsandranges/locations/santee
These data were collected using funding from the U.S. Government and can be used without additional permissions or fees. If you use these data in a publication, presentation, or other research product please use the following citation:
Amatya, Devendra M. and Trettin, Carl C. 2019. Santee Experimental Forest, Watershed 77: streamflow, water chemistry, water table, and weather data. Fort Collins, CO: Forest Service Research Data Archive. Updated 09 June 2020. https://doi.org/10.2737/RDS-2019-0033
* IMPORTANT: A newer edition of these data is available and should be used instead of this first edition. The second edition (https://doi.org/10.2737/RDS-2019-0033-2) includes additional years and data corrections.
Watershed 77 (WS77) is a 155 hectare (ha) first-order treatment watershed on the Santee Experimental Forest (SEF) near Cordesville, South Carolina that was established in 1963 and became part of a...