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Effluent-discharge dataset from the Outfall of the Nogales International Wastewater Treatment Plant, geographic NAD83 (Water Years 2012–2014 and 2016)


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Mayo, J.P., 2017, Supplemental stream-stage, discharge, and Escherichia coli datasets used in the assessment of water quality at Tumacácori National Historical Park and the Upper Santa Cruz River, 2009–2017: U.S. Geological Survey data release,


This dataset contains effluent-discharge data, in cubic feet per second, for the Santa Cruz location at the Outfall of the Nogales International Wastewater Treatment Plant (SC6, 312724110580501). The data were collected by personnel at the U.S. International Boundary and Water Commission using a pipeline flow meter. The data were recorded at a 30 minute interval for the period of 2012 to 2014 and a 15-minute for the period January 1, 2016 to October 31, 2016. Data were checked for erroneous data and were deleted from the record. The data were reported to USGS for the period of Water Year 2012–2016. Data are missing from the record for the period of July 7, 2014 to August 30, 2014 and November 6, 2014 through December 31, 2015.


Point of Contact :
Nicholas V. Paretti
Metadata Contact :
Justine P. Mayo
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase

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Discharge data collected at NIWTP (USGS 312724110580501).csv 1.89 MB text/csv


Tumacácori National Historical Park (TUMA) was established in 1908 to protect, preserve, and communicate the history of the old Spanish and O’odham mission church. In 2002, Congress expanded the Park’s purpose and mission, increasing the Park’s area to include more than 1 mile of the Santa Cruz River and its associated riparian area. As part of the USGS–NPS Water-Quality Partnership, a three year investigation was conducted to provide TUMA with a better understanding of the spatial and temporal variability of Escherichia coli (E. coli) concentrations and sources within and upstream of the Park. The supplemental data release includes stream-stage datasets collected by the USGS using pressure transducers and effluent-discharge and E. coli concentration data collected by the U.S. International Boundary and Water Commission.



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