Dataset Overview | National Centers for Environmental Information (NCEI)

Stream discharge, turbidity, and suspended sediment concentration in Fagaʻalu watershed, American Samoa from 2012-01-12 to 2016-11-15 (NCEI Accession 0191818)

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Data on water level (stage), turbidity (T), and suspended sediment concentration (SSC) were collected in the Fagaʻalu watershed in American Samoa from 2012-2016. Stage data were combined with a rating curve to calculate discharge (Q, m3/s). Monitoring sites included a forested site (F1: stage, T, SSC), a site downstream of a quarry (F2: T, SSC), and a site upstream of the discharge point to the ocean (F3: stage, T, SSC). Grab samples of water for SSC were collected at F1, F2, F3, and some supplemental sites. See Messina and Biggs (2016) and Holst-Rice et al (2016) for details.

Dataset Citation

Cite as: Biggs, Trent; Messina, Alex; Holst-Rice, Susie; Curtis, Meagan (2019). Stream discharge, turbidity, and suspended sediment concentration in Fagaʻalu watershed, American Samoa from 2012-01-12 to 2016-11-15 (NCEI Accession 0191818). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0191818. Accessed [date].

Dataset Identifiers

ISO 19115-2 Metadata

gov.noaa.nodc:0191818

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Download Data	HTTPS (download) Navigate directly to the URL for data access and direct download. FTP (download) These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP).
Distribution Formats	CSV
Ordering Instructions	Contact NCEI for other distribution options and instructions.
Distributor	NOAA National Centers for Environmental Information +1-301-713-3277 NCEI.Info@noaa.gov
Dataset Point of Contact	NOAA National Centers for Environmental Information ncei.info@noaa.gov

Time Period	2012-01-12 to 2016-11-15
Spatial Bounding Box Coordinates	West: -170.694 East: -170.685 South: -14.2914 North: -14.2882
Spatial Coverage Map

General Documentation

NCEI Dataset Landing Page
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Descriptive Information
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Associated Resources

Baseline Assessment of Fagaʻalu Watershed: A Ridge to Reef Assessment in Support of Sediment Reduction Activities and Future Evaluation of their Success
- Baseline Assessment of Fagaʻalu Watershed: A Ridge to Reef Assessment in Support of Sediment Reduction Activities and Future Evaluation of their Success (download)
  Baseline assessment document. NOAA Technical Memorandum CRCP 23
Contributions of human activities to suspended sediment yield during storm events from a small, steep, tropical watershed
- https://doi.org/10.1016/j.jhydrol.2016.03.053
  journal article
Terrigenous sediment dynamics in a small, tropical, fringing-reef embayment
- Terrigenous sediment dynamics in a small, tropical, fringing-reef embayment (download)
  Dissertation on sediment dynamics

Publication Dates	publication: 2019-07-27
Data Presentation Form	Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status	Complete - production of the data has been completed Historical archive - data has been stored in an offline storage facility
Data Update Frequency	As needed
Supplemental Information	Submission Package ID: 7XBJY3
Purpose	The data were collected to determine the impacts of human activities on discharge and sediment load to the coast.
Use Limitations	accessLevel: Public Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.

Dataset Citation	Cite as: Biggs, Trent; Messina, Alex; Holst-Rice, Susie; Curtis, Meagan (2019). Stream discharge, turbidity, and suspended sediment concentration in Fagaʻalu watershed, American Samoa from 2012-01-12 to 2016-11-15 (NCEI Accession 0191818). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0191818. Accessed [date].
Cited Authors	Biggs, Trent San Diego State University Messina, Alex Holst-Rice, Susie Curtis, Meagan
Principal Investigators	Trent Biggs San Diego State University
Contributors	San Diego State University
Resource Providers	Trent Biggs San Diego State University San Diego State University
Publishers	NOAA National Centers for Environmental Information
Acknowledgments	Related Funding Agency: US DOC, American Samoa Related Funding Agency: National Fish and Wildlife Foundation Related Funding Agency: NOAA Coral Reef Conservation Program

Theme keywords	NODC DATA TYPES THESAURUS WATER LEVEL NODC OBSERVATION TYPES THESAURUS in situ laboratory analyses WMO_CategoryCode oceanography CoRIS Discovery Thesaurus Numeric Data Sets > Water Level Numeric Data Sets > Water Quality CoRIS Theme Thesaurus EARTH SCIENCE > Hydrosphere > Surface Water > Discharge/Flow EARTH SCIENCE > Hydrosphere > Water Quality EARTH SCIENCE > Terrestrial Hydrosphere > Water Quality/Water Chemistry > Suspended Solids Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > SOLIDS > SEDIMENTS EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > SOLIDS > SUSPENDED SOLIDS EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > WATER CHARACTERISTICS > TURBIDITY
Data Center keywords	NODC COLLECTING INSTITUTION NAMES THESAURUS San Diego State University NODC SUBMITTING INSTITUTION NAMES THESAURUS San Diego State University
Instrument keywords	NODC INSTRUMENT TYPES THESAURUS bottle pressure sensor turbidity sensor Global Change Master Directory (GCMD) Instrument Keywords PRESSURE SENSORS > PRESSURE SENSORS TURBIDITY METERS > TURBIDITY METERS Provider Instruments Pressure Transducer Sediment Concentration Autosampler
Place keywords	NODC SEA AREA NAMES THESAURUS South Pacific Ocean CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > American Samoa (14S170W0000) COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > Tutuila Island (14S170W0016) COUNTRY/TERRITORY > United States of America > American Samoa > Tutuila Island > Faga'alu (14S170W0005) OCEAN BASIN > Pacific Ocean > American Samoa > American Samoa (14S170W0000) OCEAN BASIN > Pacific Ocean > American Samoa > Tutuila Island (14S170W0016) OCEAN BASIN > Pacific Ocean > Pago Pago Harbor > Faga'alu (14S170W0005) Global Change Master Directory (GCMD) Location Keywords OCEAN > PACIFIC OCEAN > SOUTH PACIFIC OCEAN
Project keywords	NODC PROJECT NAMES THESAURUS Coral Reef Conservation Program (CRCP) CORAL REEF STUDIES CRCP Project 31211 FY18/FY19/FY20/FY21/FY22 National Fish and Wildlife Foundation - Coral Fund Competitive Grants (International) Grant Award Numbers NA10NOS4630131 NA14NOS4820143 NOAA-NOS-OCRM-2013-2003459
Keywords	NCEI ACCESSION NUMBER 0191818

Use Constraints	Cite as: Biggs, Trent; Messina, Alex; Holst-Rice, Susie; Curtis, Meagan (2019). Stream discharge, turbidity, and suspended sediment concentration in Fagaʻalu watershed, American Samoa from 2012-01-12 to 2016-11-15 (NCEI Accession 0191818). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0191818. Accessed [date].
Access Constraints	Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Fees	In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.

Lineage information for: dataset
Processing Steps	2019-07-27T03:36:12Z - NCEI Accession 0191818 v1.1 was published.
Output Datasets	NCEI Accession 0191818 v1.1 NCEI Accession 0191818 v1.1 (download) published 2019-07-27T03:36:12Z

Lineage information for: dataset
Processing Steps	Parameter or Variable: Stream discharge (calculated); Units: cubic meters per second; Observation Category: in situ; Sampling Instrument: Pressure transducer; Sampling and Analyzing Method: Pressure transducer readings of water level (Stage) were recorded every 5 or 15 minutes. Discharge calculated using a rating curve according to Messina and Biggs, 2016, Journal of Hydrology v 538 pp 726-742.; Data Quality Method: Rating curves were developed using observed stage and discharge to calibrate a hydraulic model (see Messina and Biggs 2016). Discharge values were checked against the site downstream (F3) using double mass curve analysis. The stage was adjusted manually (field "Stage.corr.cm") where needed to maintain consistency in the double mass curves.. Parameter or Variable: Turbidity (measured); Units: NTU; Observation Category: in situ; Sampling Instrument: Turbidity Meter; Sampling and Analyzing Method: Turbidity meters were installed at F1, F2 (2016 only), and F3 and recorded turbidity every 5-15 minutes. Several different models were used over the course of the project; see Messina and Biggs 2016 for details.; Data Quality Method: Turbidity meters were checked against standards at the beginning and end of deployment periods, and sent to the manufacturer for recalibration at the end of each campaign. Quality flags are "O" = outlier; "B"=bad value, unknown reason", "S"=sunlight artifact.. Parameter or Variable: Suspended sediment concentration (measured); Units: mg/L; Observation Category: in situ; Sampling Instrument: Manual grab or autosampler; Sampling and Analyzing Method: Water samples were collected using manual grab with a 1L wide-mouthed bottle, or with an autosampler. SSC was determined using gravimetric methods (see Messina 2016 and Messina and Biggs 2016 for details).; Data Quality Method: Duplicates were run on some samples to check for consistency..

Lineage information for: dataset

Processing Steps

Parameter or Variable: Stream discharge (calculated); Units: cubic meters per second; Observation Category: in situ; Sampling Instrument: Pressure transducer; Sampling and Analyzing Method: Pressure transducer readings of water level (Stage) were recorded every 5 or 15 minutes. Discharge calculated using a rating curve according to Messina and Biggs, 2016, Journal of Hydrology v 538 pp 726-742.; Data Quality Method: Rating curves were developed using observed stage and discharge to calibrate a hydraulic model (see Messina and Biggs 2016). Discharge values were checked against the site downstream (F3) using double mass curve analysis. The stage was adjusted manually (field "Stage.corr.cm") where needed to maintain consistency in the double mass curves..
Parameter or Variable: Turbidity (measured); Units: NTU; Observation Category: in situ; Sampling Instrument: Turbidity Meter; Sampling and Analyzing Method: Turbidity meters were installed at F1, F2 (2016 only), and F3 and recorded turbidity every 5-15 minutes. Several different models were used over the course of the project; see Messina and Biggs 2016 for details.; Data Quality Method: Turbidity meters were checked against standards at the beginning and end of deployment periods, and sent to the manufacturer for recalibration at the end of each campaign. Quality flags are "O" = outlier; "B"=bad value, unknown reason", "S"=sunlight artifact..
Parameter or Variable: Suspended sediment concentration (measured); Units: mg/L; Observation Category: in situ; Sampling Instrument: Manual grab or autosampler; Sampling and Analyzing Method: Water samples were collected using manual grab with a 1L wide-mouthed bottle, or with an autosampler. SSC was determined using gravimetric methods (see Messina 2016 and Messina and Biggs 2016 for details).; Data Quality Method: Duplicates were run on some samples to check for consistency..

Acquisition Information (collection)
Instrument	bottle pressure sensor turbidity sensor

Last Modified: 2024-02-28T14:44:55Z
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Stream discharge, turbidity, and suspended sediment concentration in Fagaʻalu watershed, American Samoa from 2012-01-12 to 2016-11-15 (NCEI Accession 0191818)

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