Marine biological survey of ROI-NAMUR outfall at the United States Army Kwajalein Atoll, Republic of the Marshall Islands, May 2000 (NODC Accession 0000653)

Metadata Updated: February 27, 2019

Roi-Namur is located at the northernmost tip of Kwajalein Atoll, approximately 64 kilometers north of the U.S. Army Kwajalein Atoll (USAKA) central command post on Kwajalein Islet. Roi-Namur has a single sewage outfall, which is located at the northwestern corner of the islet. Originally, the outfall extended from shore to a point about halfway across the reef flat where the pipe ended abruptly as an upturned, uncapped elbow. Raw sewage was pumped through the pipe in pulses approximately every 15-20 minutes. Waves and shallow currents across the reef flat carried at least some of the effluent back toward shore and the lagoon, creating a potentially unhealthy situation. In order to correct this problem, USAKA implemented a plan to extend the original outfall all the way across the reef flat and into the open ocean where the predominant current flow would carry effluent-mixed waters away from the islet. Ultimately, the extended outfall was to be connected to a new sewage treatment facility that would discharge primarily treated effluent. Because of a concern that this discharge might adversely impact the coral-reef community surrounding the end of the new outfall, a baseline marine biological survey was to be conducted prior to start-up of the new sewage treatment facility. As planned, the results of this survey would provide a baseline against which the results of future surveys could be compared in order to determine whether a balanced community of indigenous species had been maintained at the site during operation of the facility. If not, conversion to secondary treatment at the facility would need to be considered. The first resurvey was planned to occur one year after start-up of the new sewage treatment facility with subsequent resurveys planned for every five years thereafter. In August 1997, biologists from the U.S. Fish and Wildlife Service (USFWS) and the National Marine Fisheries Service (NMFS) conducted the baseline marine biological survey in the vicinity of the Roi-Namur outfall. In May 2000, biologists from these agencies returned to Roi-Namur to re-characterize the coral-reef habitat and biological organisms at five survey sites in the vicinity of the outfall, previously established during the 1997 baseline marine biological survey. The purpose of the second survey was to collect data to determine whether a balanced community of indigenous species had been maintained at this location after the sewage treatment facility became operational. If not, conversion to secondary treatment at the facility would need to be considered. For the National Oceanographic Data Center, interest in the report focuses on the marine element. Data tables from marine surveys of reef fishes, corals, other macroinvertebrates, and algae that exist in those habitats are provided.

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Dates

Metadata Date November 1, 2018
Metadata Created Date September 27, 2015
Metadata Updated Date February 27, 2019
Reference Date(s) December 17, 2010 (publication)
Frequency Of Update asNeeded

Additional Metadata

Resource Type Dataset
Metadata Date November 1, 2018
Metadata Created Date September 27, 2015
Metadata Updated Date February 27, 2019
Reference Date(s) December 17, 2010 (publication)
Responsible Party (Point of Contact)
Contact Email
Access Constraints Cite as: Foster, Kevin; US DOI/Fish and Wildlife Service > Pacific Islands Ecoregion (2010). Marine biological survey of ROI-NAMUR outfall at the United States Army Kwajalein Atoll, Republic of the Marshall Islands, May 2000 (NODC Accession 0000653). Version 1.1. National Oceanographic Data Center, NOAA. Dataset. [access date], 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.
Bbox East Long 167.44
Bbox North Lat 9.4
Bbox South Lat 9.37
Bbox West Long 167.46
Coupled Resource
Frequency Of Update asNeeded
Guid gov.noaa.nodc:0000653
Licence accessLevel: Public
Metadata Language eng
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2000-05-01
Temporal Extent End 2000-05-31

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