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Dissolved silica time series for Beaverdam Reservoir, Carvins Cove Reservoir, Claytor Lake, Falling Creek Reservoir, Gatewood Reservoir, Smith Mountain Lake, and Spring Hollow Reservoir in southwestern Virginia, USA during 2014

General Information
Data Package:
Local Identifier:edi.71.5
Title:Dissolved silica time series for Beaverdam Reservoir, Carvins Cove Reservoir, Claytor Lake, Falling Creek Reservoir, Gatewood Reservoir, Smith Mountain Lake, and Spring Hollow Reservoir in southwestern Virginia, USA during 2014
Alternate Identifier:DOI PLACE HOLDER
Abstract:

Water column dissolved silica (SiO2) was analyzed during 2014 in seven freshwater reservoirs in southwestern Virginia (VA), USA. These reservoirs are: Beaverdam Reservoir (Vinton, VA), Carvins Cove Reservoir (Roanoke, VA), Claytor Lake (Pulaski, VA), Falling Creek Reservoir (Vinton, VA), Gatewood Reservoir (Pulaski, VA), Smith Mountain Lake (Bedford, VA), and Spring Hollow Reservoir (Salem, VA). Beaverdam, Carvins Cove, Falling Creek, and Spring Hollow Reservoirs are owned and operated by the Western Virginia Water Authority as primary or secondary drinking water sources for Roanoke, Virginia; Gatewood Reservoir is a drinking water source for the Town of Pulaski, Virginia; and Smith Mountain Lake is jointly treated by Bedford Regional Water Authority and Western Virginia Water Authority as a drinking water source for Franklin County, Virginia. Claytor Lake is utilized for hydroelectric power generation by Appalachian Power Company. The dataset consists of depth profiles of dissolved silica samples generally measured at the deepest site of each reservoir adjacent to the dam and an inflow stream into Falling Creek Reservoir. The water column samples were collected approximately fortnightly from April-June, weekly from June-July and sporadically from July-October at Beaverdam Reservoir; weekly from April-July and fortnightly from July-November at Carvins Cove Reservoir; sporadically from April-August at Claytor Lake; weekly from April-November at Falling Creek Reservoir; fortnightly from April-October at Gatewood Reservoir; fortnightly from May-November at Spring Hollow Reservoir; and fortnightly from May-October at Smith Mountain Lake.

Publication Date:2020-08-18

Time Period
Begin:
2014-04-16
End:
2014-11-10

People and Organizations
Contact:Carey, Cayelan C. (Virginia Tech) [  email ]
Creator:Carey, Cayelan C. (Virginia Tech)
Creator:Doubek, Jonathan P. (Virginia Tech)
Creator:Wynne, Jacob H. (Virginia Tech)
Creator:Niederlehner, Barbara R. (Virginia Tech)

Data Entities
Data Table Name:
silica_master_df.csv
Description:
Reservoir dissolved silica dataset
Detailed Metadata

Data Entities

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/edi/71/5/791ec9ca0f1cb9361fa6a03fae8dfc95
Name:silica_master_df.csv
Description:Reservoir dissolved silica dataset
Number of Records:316
Number of Columns:6

Table Structure
Object Name:silica_master_df.csv
Size:13269 bytes
Authentication:96ed7df985edf9f29a4861e0dea1489d Calculated By MD5
Text Format:
Number of Header Lines:1
Record Delimiter:\r\n
Orientation:column
Simple Delimited:
Field Delimiter:,

Table Column Descriptions
 
Column Name:Reservoir  
Site  
DateTime  
Depth_m  
DRSI_mgL  
Flag_DRSI  
Definition:Three-letter code corresponding to sampled reservoir; BVR=Beaverdam Reservoir, CCR= Carvins Cove, CLY = Claytor Lake, Reservoir, FCR=Falling Creek Reservoir, GWR=Gatewood Reservoir, SHR=Spring Hollow Reservoir, SML = Smith Mountain Lake50 = Deep hole or site nearest to dam in each reservoir, 100 = Inflow stream to Falling Creek ReservoirDate of sampling. All data were collected in the eastern time zone of the U.S.A., with Eastern Standard Time ObservedWater depth where the sample was collected or sensor reading was measuredDissolved silica concentrationData flag for dissolved silica
Storage Type:string  
float  
date  
float  
float  
float  
Measurement Type:nominalratiodateTimeratioratioratio
Measurement Values Domain:
DefinitionThree-letter code corresponding to sampled reservoir; BVR=Beaverdam Reservoir, CCR= Carvins Cove, CLY = Claytor Lake, Reservoir, FCR=Falling Creek Reservoir, GWR=Gatewood Reservoir, SHR=Spring Hollow Reservoir, SML = Smith Mountain Lake
Unitdimensionless
Typenatural
Min50 
Max100 
FormatYYYY-MM-DD hh:mm:ss
Precision
Unitmeter
Typereal
Min0.1 
Max34 
UnitmilligramsPerLiter
Typereal
Min0 
Max13.875482 
Unitdimensionless
Typewhole
Min0 
Max4 
Missing Value Code:
CodeNA
Explvalue is missing
CodeNA
Explvalue is missing
CodeNA
Explvalue is missing
CodeNA
Explvalue is missing
CodeNA
Explvalue is missing
CodeNA
Explvalue is missing
Accuracy Report:            
Accuracy Assessment:            
Coverage:            
Methods:            

Data Package Usage Rights

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.

Keywords

By Thesaurus:
carey lab controlled vocabularyVirginia Tech, Stream Team, Carey Lab, Western Virginia Water Authority, Falling Creek Reservoir
cuahsi controlled vocabularyLake, Reservoir
lter controlled vocabularyplankton, phytoplankton, algae, diatoms, silica
(No thesaurus)dissolved silica, filtered silica, reactive silica

Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

Methods and protocols used in the collection of this data package
Description:

SAMPLING TIMES Sampling occurred between the hours of 9:00 and 15:00 EST and are denoted in the DateTime column as 12:00.

SAMPLE COLLECTION AND EQUIPMENT

Water samples were collected at the following depths for each reservoir: 0.1, 4, 8, and 12 meters within Beaverdam Reservoir, which has a Zmax of 13 meters at full pond; 0.1, 5, 6, 14, 18, 19, and 20 meters within Carvins Cove Reservoir, which has a Zmax of 23 meters at full pond; 0.1, 5, 6, 7, 30, and 34 meters within Claytor Lake, which has a Zmax of 47.5 meters at full pond; 0.1, 5, and 9 meters within Falling Creek Reservoir, which has a Zmax of 9.3 meters at full pond; 0.1, 4, 5, 10, and 12 meters within Gatewood Reservoir, which has a Zmax of 14 meters; 0.1, 5, 7, 8, 14, 25, and 28 meters within Spring Hollow Reservoir, which has a Zmax of 63m; and 0.1, 6, 7, 8, 25, 28, and 30 meters within Smith Mountain Lake, which has a Zmax of 76 meters. A 4-L Van Dorn water sampler was used to collect samples (Wildco, Yulee, Florida, USA) which were immediately filtered through a 0.7 micrometer membrane glass fiber filter then stored in acid-washed 125 mL polypropylene bottles. Samples were analyzed as soon as possible or frozen within 12 hours and then fully thawed for analysis (McDonald et al. 1982).

CHEMICAL ANALYSES AND EQUIPMENT

5 mL was measured from each water sample and combined with 2.5 mL of 0.25 N HCl, 2.5 mL of 5% ammonium molybdate, and 2.5 mL of 1% sodium EDTA. After 5-minutes, 5.0 mL of 17% sodium sulfite was added. Once reagents were added, the sample was set to rest for at least 30 minutes and up to several hours. The concentration of dissolved silica within the sample was analyzed colorimetrically, with the absorbance value read at the wavelength of 700 nm by spectrophotometer. In order to quantify concentration, the absorbance of the sample was compared to a standard curve (Wetzel and Likens 2000).

REFERENCES

Wetzel RG and GE Likens. 2000. Limnological Analyses. 3rd ed. Exercise 7. Inorganic Nutrients: Nitrogen, Phosphorus, and Other Nutrients, pp 97-99. Springer, New York. 429 p.

McDonald, RW, FA McLaughlin, CS Wong. 1986. The storage of reactive silicate samples by freezing. Limnol. Oceanogr. 31(5):1139-1142.

People and Organizations

Creators:
Individual: Cayelan C. Carey
Organization:Virginia Tech
Email Address:
cayelan@vt.edu
Id:https://orcid.org/0000-0001-8835-4476
Individual: Jonathan P. Doubek
Organization:Virginia Tech
Email Address:
jdoubek@lssu.edu
Id:https://orcid.org/0000-0003-2651-4715
Individual: Jacob H. Wynne
Organization:Virginia Tech
Email Address:
jacobwynne@vt.edu
Id:https://orcid.org/0000-0003-4221-1247
Individual: Barbara R. Niederlehner
Organization:Virginia Tech
Email Address:
bniederl@vt.edu<ca><ca><ca>
Contacts:
Individual: Cayelan C. Carey
Organization:Virginia Tech
Email Address:
cayelan@vt.edu
Id:https://orcid.org/0000-0001-8835-4476

Temporal, Geographic and Taxonomic Coverage

Temporal, Geographic and/or Taxonomic information that applies to all data in this dataset:

Time Period
Begin:
2014-04-16
End:
2014-11-10
Geographic Region:
Description:Beaverdam Reservoir is located in Vinton, Virginia, USA
Bounding Coordinates:
Northern:  37.322865Southern:  37.311961
Western:  -79.824834Eastern:  -79.813848
Geographic Region:
Description:Carvins Cove Reservoir is located in Roanoke, Virginia, USA
Bounding Coordinates:
Northern:  37.409127Southern:  37.365345
Western:  -79.978642Eastern:  -79.944052
Geographic Region:
Description:Claytor Lake is located in Pulaski, Virginia, USA
Bounding Coordinates:
Northern:  37.086718Southern:  36.967031
Western:  -80.74543Eastern:  -80.576912
Geographic Region:
Description:Falling Creek Reservoir is located in Vinton, Virginia, USA
Bounding Coordinates:
Northern:  37.309589Southern:  37.30266
Western:  -79.839249Eastern:  -79.836009
Geographic Region:
Description:Gatewood Reservoir is located in Pulaski, Virginia, USA
Bounding Coordinates:
Northern:  37.054358Southern:  37.03819
Western:  -80.89188Eastern:  -80.858492
Geographic Region:
Description:Smith Mountain Lake is located in Bedford, Franklin and Pittsylvania, Virginia, USA
Bounding Coordinates:
Northern:  37.158577Southern:  37.002455
Western:  -79.726699Eastern:  -79.522078
Geographic Region:
Description:Spring Hollow Reservoir is located in Salem, Virginia, USA
Bounding Coordinates:
Northern:  37.231092Southern:  37.217594
Western:  -80.179076Eastern:  -80.170407

Project

Parent Project Information:

Title:No project title to report
Personnel:
Individual: Cayelan C. Carey
Organization:Virginia Tech
Email Address:
cayelan@vt.edu
Id:https://orcid.org/0000-0001-8835-4476
Role:Principal Investigator
Funding: Western Virginia Water Authority
Related Project:
Title:No project title to report
Personnel:
Individual: Cayelan C. Carey
Organization:Virginia Tech
Email Address:
cayelan@vt.edu
Id:https://orcid.org/0000-0001-8835-4477
Role:Principal Investigator
Funding: Fralin Life Sciences Institute
Related Project:
Title:SCC-IRG Track 2: Resilient Water Systems: Integrating Environmental Sensor Networks and Real-Time Forecasting to Adaptively Manage Drinking Water Quality and Build Social Trust
Personnel:
Individual: Cayelan C. Carey
Organization:Virginia Tech
Email Address:
cayelan@vt.edu
Id:https://orcid.org/0000-0001-8835-4478
Role:Principal Investigator
Funding: National Science Foundation 1737424
Related Project:
Title:Collaborative Research: Consequences of changing oxygen availability for carbon cycling in freshwater ecosystems
Personnel:
Individual: Cayelan C. Carey
Organization:Virginia Tech
Email Address:
cayelan@vt.edu
Id:https://orcid.org/0000-0001-8835-4479
Role:Principal Investigator
Funding: National Science Foundation 1753639
Related Project:
Title:Collaborative Research: CIBR: Cyberinfrastructure Enabling End-to-End Workflows for Aquatic Ecosystem Forecasting
Personnel:
Individual: Cayelan C. Carey
Organization:Virginia Tech
Email Address:
cayelan@vt.edu
Id:https://orcid.org/0000-0001-8835-4480
Role:Principal Investigator
Funding: National Science Foundation 1933016

Maintenance

Maintenance:
Description:completed
Frequency:

Additional Info

Additional Information:
 

In 2014, multiple whole-ecosystem manipulations were conducted at Falling Creek Reservoir. These manipulations include intermittent operation of hypolimnetic oxygenation. For a detailed description of the hypolimnetic oxygenation engineered system, see Gerling et al. (2014). These systems were operated in 2014 following Table 1 in Gerling et al. (2016).

Gerling, A.B., Browne, R.G., Gantzer, P.A., Mobley, M.H., Little, J.C., and C.C. Carey. 2014. First report of the successful operation of a side stream supersaturation hypolimnetic oxygenation system in a eutrophic, shallow reservoir. Water Research. 67: 129-143. doi: 10.1016/j.watres.2014.09.002 Gerling, A.B., Z.W. Munger, J.P. Doubek, K.D. Hamre, P.A. Gantzer, J.C. Little, and C.C. Carey. 2016. Whole-catchment manipulations of internal and external loading reveal the sensitivity of a century-old reservoir to hypoxia. Ecosystems. 19:555-571. DOI: 10.1007/s10021-015-9951-0

Other Metadata

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