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NCCOS Assessment: Measurement of Turbidity and Nutrients in Three Rivers that Drain to the Achang Reef Flat from Manell Watershed, Guam, from 2016-12-01 to 2018-12-31 (NCEI Accession 0204837)

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This dataset contains results from the monitoring of nutrients and turbidity in three rivers in the Manell watershed in southern Guam, which drain to the Achang Reef Flat Marine Preserve. The dataset contains a series of data tables and a data dictionary for the monitoring that occurred between December 2016 and December 2018. The dataset includes tables on nutrient monitoring, suspended sediment concentration (SSC), results from automated monitoring of stream levels, rainfall and turbidity, and a table of water quality measurements.
  • Cite as: Pait, Tony; Hartwell, Ian; Apeti, Dennis; Mason, Andrew (2019). NCCOS Assessment: Measurement of Turbidity and Nutrients in Three Rivers that Drain to the Achang Reef Flat from Manell Watershed, Guam, from 2016-12-01 to 2018-12-31 (NCEI Accession 0204837). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/mxzk-je14. Accessed [date].
gov.noaa.nodc:0204837
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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 2016-12-01 to 2018-12-31
Spatial Bounding Box Coordinates
West: 144.681978
East: 144.722883
South: 13.2457
North: 13.262778
Spatial Coverage Map
General Documentation
Associated Resources
  • Hartwell, S. I., Apeti, D. A., Pait, A. S., Mason, A. L., & Robinson, C. (2 C.E.). An analysis of chemical contaminants in sediments and fish from Cocos Lagoon, Guam. U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Ocean Service. https://doi.org/10.7289/v5/tm-nos-nccos-235
  • Pait, Anthony S.; Mason, Andrew L.; Hartwell, S. Ian; Apeti, Dennis A. An Assessment of Chemical Contaminants in the Waters Around Cocos Island, Guam Using Polyethylene Passive Water Samplers (NOAA Technical Memorandum NOS NCCOS 261); An Assessment of Chemical Contaminants in the Waters Around Cocos Island, Guam Using Polyethylene Passive Water Samplers. NOAA technical memorandum NOS NCCOS; 261. 2019. https://doi.org/10.25923/0bvz-p335
  • The measurement of upwelling and subsequent biological process by means of the Technicon Autoanalyzer® and associated equipment
    • https://doi.org/10.1016/0011-7471(67)90082-4
      Armstrong, F. A. J., C. R. Stearns and J. D. H. Strickland. 1967. The measurement of upwelling and subsequent biological processes by means of the Technicon AutoAnalyzer and associated equipment. Deep Sea Research and Oceanographic Abstracts 14(3): 381-389.
  • The continuous determination of low level iron, soluble phosphate and total phosphate with the Autoanalyzer
  • Grasshoff, K., Kremling, K., & Ehrhardt, M. (Eds.). (1999). Methods of Seawater Analysis. https://doi.org/10.1002/9783527613984
    • https://doi.org/10.1002/9783527613984
      Hansen, H.P. and F. Koroleff. 1999. Determination of nutrients. In: Grasshoff, K., K. Kremling, M. Ehrhardt (eds.). Methods of Seawater Analysis, 3rd ed. Wiley-VCH, Weinheim, ISBN:3-527-29589-5, pp. 159-228.
  • Pait, Anthony S.; Whitman, William M.C.; Hartwell, S. Ian; Whitall, David R.; Apeti, Dennis A. Measurement of Turbidity, Suspended Sediments and Nutrients in Three Rivers that Drain to the Achang Preserve from the Manell Watershed, Guam; Manell Watershed Report. NOAA Technical Memorandum NOS NCCOS; 268. 2019. https://doi.org/10.25923/v587-3f08
Publication Dates
  • publication: 2019-10-22
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
Purpose This project characterized turbidity, suspended sediment concentration (SSC), nutrient dynamics, and water quality in three rivers in the Manell watershed that drain to the Achang Reef Flat Marine Preserve in Cocos Lagoon at the southern tip of Guam, for two years. Sedimentation was identified as a high threat to coral reefs in the Manell-Geus Conservation Action Plan, and nutrients were highlighted in the Manell-Geus Habitat Blueprint. The Manell-Geus watershed is a Habitat Focus Area, and sediments and nutrients are suspected of degrading water quality in the area, particularly in the Achang Preserve. Jurisdictional managers in Guam highlighted the area as being impacted by LBSP, and requested NCCOS’ help in developing a baseline of conditions in the rivers. Monthly collections of water samples were analyzed for nutrients and SSC, and turbidity was measured using two turbidity loggers for unattended monitoring, along with a hand-held turbidity meter. A series of water quality parameters (i.e., conductivity, temperature and dissolved oxygen) were also measured with a hand-held water quality meter. The information generated from this project established a baseline of conditions, and can be used to assess the benefits of the planned restoration of vegetation on the hillsides within the Manell watershed. The results may also provide information on the differences in turbidity and nutrients between the rivers to help better focus restoration efforts, and the information generated can also be compared with similar work that has been conducted in the nearby Geus watershed, by the University of Guam. For more details, see Hartwell et al. (2017) and Pait et al. (2019).
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: Pait, Tony; Hartwell, Ian; Apeti, Dennis; Mason, Andrew (2019). NCCOS Assessment: Measurement of Turbidity and Nutrients in Three Rivers that Drain to the Achang Reef Flat from Manell Watershed, Guam, from 2016-12-01 to 2018-12-31 (NCEI Accession 0204837). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/mxzk-je14. Accessed [date].
Cited Authors
Principal Investigators
Collaborators
Contributors
Resource Providers
Points of Contact
Publishers
Acknowledgments
  • Funding Agency: NOAA Coral Reef Conservation Program
  • Funding Agency: NOAA National Centers for Coastal Ocean Science
Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
CoRIS Discovery Thesaurus
  • Numeric Data Sets > Water Quality
CoRIS Theme Thesaurus
  • EARTH SCIENCE > Hydrosphere > Surface Water > Discharge/Flow
  • EARTH SCIENCE > Hydrosphere > Surface Water > Runoff
  • EARTH SCIENCE > Hydrosphere > Water Quality
  • EARTH SCIENCE > Hydrosphere > Water Quality > Contaminants
Global Change Master Directory (GCMD) Science Keywords NCCOS Research Areas
  • Stressor Impacts and Mitigation > Biological Effects of Contaminants and Nutrients
NCCOS Research Data Types
  • Derived Data Product
  • Field Observation
Provider Keywords
  • Nutrient Concentrations
  • Rainfall
  • Stream Level Height
  • Suspended Sediment Concentration (SSC)
  • Tide Level
Data Center keywords NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS Global Change Master Directory (GCMD) Data Center Keywords
Instrument keywords NODC INSTRUMENT TYPES THESAURUS Global Change Master Directory (GCMD) Instrument Keywords Provider Instruments
  • Automated turbidity loggers
  • HoboWare U20 water level data loggers
  • HoboWare rain gauge Model 8482
  • NOAA Tide Gauge Station, Pago Bay, Guam
  • Technicon II nutrient analyzer
  • YSI Pro Plus water quality meter
  • manual collection of water samples
Place keywords CoRIS Place Thesaurus
  • COUNTRY/TERRITORY > United States of America > Guam > Achang (13N144E0064)
  • COUNTRY/TERRITORY > United States of America > Guam > Guam (13N144E0000)
  • OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Guam > Achang (13N144E0064)
  • OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Guam > Guam (13N144E0000)
Global Change Master Directory (GCMD) Location Keywords NCCOS Regions of Study
  • U.S. States and Territories > Guam
  • Waterbodies > Pacific Ocean
Provider Place Names
  • Achang Reef Flat Marine Preserve
  • Ajayan River
  • Cocos Lagoon, Guam
  • Liyog River
  • Sumay River
Project keywords NODC PROJECT NAMES THESAURUS CRCP Project
  • 31084
  • Measurement of Turbidity and Nutrients in Two Rivers that Drain to the Achang Reef Flat from Manell Watershed, Guam
Keywords NCEI ACCESSION NUMBER
Keywords Send2NCEI Submission Package ID
  • 0Y3C01
Use Constraints
  • Cite as: Pait, Tony; Hartwell, Ian; Apeti, Dennis; Mason, Andrew (2019). NCCOS Assessment: Measurement of Turbidity and Nutrients in Three Rivers that Drain to the Achang Reef Flat from Manell Watershed, Guam, from 2016-12-01 to 2018-12-31 (NCEI Accession 0204837). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/mxzk-je14. 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.
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  • 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
  • 2019-10-22T20:10:22Z - NCEI Accession 0204837 v1.1 was published.
Output Datasets
Lineage information for: dataset
Processing Steps
  • Parameter or Variable: Nutrient Concentrations (measured); Units: micromoles/liter; Observation Category: in situ; Sampling Instrument: Technicon® II nutrient analyzer; Sampling and Analyzing Method: Water samples collected from rivers into 125ml HDPE bottles by hand. Samples were sent to a NOAA contract laboratory and then analyzed using standard protocols. Data includes concentrations in both micromoles/liter and milligrams/liter of nitrate, orthophosphate, silicate, ammonium, nitrite, urea, nitrate + nitrite, total nitrogen, and total phosphorus. For detailed methodology, see Hartwell et al. (2017) and Pait et al. (2019).; Data Quality Method: NCCOS reviewed and then performed a QA/QC check on the data received from the analytical laboratory. For detailed methodology, see Hartwell et al. (2017) and Pait et al. (2019)..
  • Parameter or Variable: Suspended Sediment Concentration (SSC) (measured); Units: milligrams/liter; Observation Category: in situ; Sampling Instrument: manual collection of water samples; Sampling and Analyzing Method: Water samples collected in the field were brought back to the laboratory and filtered through pre-weighed filter pads. The filters were then dried, and the amount of sediment remaining on the pads was then reported as mg/L SSC. For detailed methodology, see Hartwell et al. (2017) and Pait et al. (2019).; Data Quality Method: Duplicate samples were collected and processed and then compared, and all results underwent a QA/QC review. For detailed methodology, see Hartwell et al. (2017) and Pait et al. (2019)..
  • Parameter or Variable: Stream Level Height (measured); Units: feet; Observation Category: in situ; Sampling Instrument: HoboWare® U20 water level data loggers; Sampling and Analyzing Method: The stream level loggers were HoboWare® U20 water level data loggers with a range of 0 to 30 ft and an accuracy of 0.015 ft. These loggers use pressure (in psi) to determine the height of the water column above. The level loggers were suspended in the bottom of PVC housings secured to the bridges at Ajayan River and Liyog rivers. In addition, one pressure logger was placed at a secure location outside of the water to monitor changes in atmospheric pressure. Stream level was calculated by subtracting the atmospheric pressure from the streambed pressure readings collected every 15 minutes. For detailed methodology, see Hartwell et al. (2017) and Pait et al. (2019).; Data Quality Method: Periodically the data loggers were briefly taken out of service for calibration and maintenance. Calibration and maintenance were completed in accordance with the manufacturer’s recommendations. The stream level loggers were factory calibrated. All the data logging instruments required periodic cleaning and the time and date were calibrated on a regular basis. All results were reviewed for QA/QC. For detailed methodology, see Hartwell et al. (2017) and Pait et al. (2019)..
  • Parameter or Variable: Rainfall (measured); Units: inches; Observation Category: in situ; Sampling Instrument: HoboWare® rain gauge Model 8482; Sampling and Analyzing Method: Rain data for the Manell Watershed was collected using a HoboWare® rain gauge installed along the eastern mountain ridge of the watershed, an area known as Ija. The rain gauge used two tipping buckets that collect water as it falls, recording each time the tipping buckets are activated representing a specific quantity of rainfall (0.01 in. per tip). For detailed methodology, see Hartwell et al. (2017) and Pait et al. (2019).; Data Quality Method: Periodically the rain gauge was briefly taken out of service for calibration and maintenance. Calibration and maintenance were completed in accordance with the manufacturer’s recommendations. All results were reviewed for QA/QC. For detailed methodology, see Hartwell et al. (2017) and Pait et al. (2019)..
  • Parameter or Variable: Turbidity (measured); Units: NTU (nephelometric turbidity units); Observation Category: in situ; Sampling Instrument: Automated turbidity loggers; Sampling and Analyzing Method: Automated turbidity loggers were deployed in two rivers draining the Manell watershed in Guam. Measurements of turbidity were made every 15 minutes. Turbidity was determined using an optical sensor in the turbidity logger sonde. For detailed methodology, see Hartwell et al. (2017) and Pait et al. (2019).; Data Quality Method: Results were periodically checked using a Hach hand held turbidity meter, and all results were reviewed for QA/QC. Calibration and maintenance of the automated turbidity loggers were completed in accordance with the manufacturer’s recommendations. The turbidity logger was calibrated monthly or as needed. The instrument required periodic cleaning and the time and date were calibrated on a regular basis. For detailed methodology, see Hartwell et al. (2017) and Pait et al. (2019)..
  • Parameter or Variable: Tide Level (measured); Units: feet; Observation Category: in situ; Sampling Instrument: NOAA Tide Gauge Station, Pago Bay, Guam; Sampling and Analyzing Method: Tide level was taken from the NOAA tide station in Pago Bay, see https://tidesandcurrents.noaa.gov/waterlevels.html?id=1631428; Data Quality Method: See https://tidesandcurrents.noaa.gov/waterlevels.html?id=1631428 for information on QA/QC of the tide data..
  • Parameter or Variable: Temperature (measured); Units: degrees Celsius; Observation Category: in situ; Sampling Instrument: YSI Pro Plus water quality meter; Sampling and Analyzing Method: The YSI probe was submerged and the values were allowed to equilibrate before readings were recorded. For detailed methodology, see Hartwell et al. (2017) and Pait et al. (2019).; Data Quality Method: Temperature readings from the YSI were periodically checked against a hand-held thermometer. For detailed methodology, see Hartwell et al. (2017) and Pait et al. (2019)..
  • Parameter or Variable: Dissolved Oxygen (measured); Units: milligrams/liter; Observation Category: in situ; Sampling Instrument: YSI Pro Plus water quality meter; Sampling and Analyzing Method: The YSI probe was submerged and the values were allowed to equilibrate before readings were recorded. Data are reported as concentration in milligrams/liter and as a percent of saturation in the water. For detailed methodology, see Hartwell et al. (2017) and Pait et al. (2019).; Data Quality Method: The YSI was periodically calibrated for dissolved oxygen. QA/QC review of the data was also carried out. For detailed methodology, see Hartwell et al. (2017) and Pait et al. (2019)..
  • Parameter or Variable: Conductivity (measured); Units: microSiemens; Observation Category: in situ; Sampling Instrument: YSI Pro Plus water quality meter; Sampling and Analyzing Method: The YSI probe was submerged and the values were allowed to equilibrate before readings were recorded. For detailed methodology, see Hartwell et al. (2017) and Pait et al. (2019).; Data Quality Method: The YSI was periodically calibrated for conductivity. QA/QC review of the data was also carried out. For detailed methodology, see Hartwell et al. (2017) and Pait et al. (2019)..
  • Parameter or Variable: Salinity (calculated); Units: ppt; Observation Category: in situ; Sampling Instrument: YSI Pro Plus water quality meter; Sampling and Analyzing Method: The YSI probe was submerged and the values were allowed to equilibrate before readings were recorded. For detailed methodology, see Hartwell et al. (2017) and Pait et al. (2019).; Data Quality Method: The YSI was periodically calibrated for conductivity using YSI conductivity standards. All results were reviewed for QA/QC. For detailed methodology, see Hartwell et al. (2017) and Pait et al. (2019)..
Acquisition Information (collection)
Instrument
  • laboratory analysis
  • multi-parameter water quality sensor
  • nutrient autoanalyzer
  • rain gauge
  • turbidity sensor
  • water level recorder
Last Modified: 2024-10-14T18:53:41Z
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